More than half of the Debian archive has been compiled successfully on the Hurd, however, many programs fail to build for various reasons.

A list of build failures including error messages can be found, as well as a preliminary analysis of them and solutions, and some more details in guidelines. Graphs and statistics about the consequence in terms of build dependencies are available.

There is a mailing list, debian-hurd-build-logs, where builds logs from the Debian GNU/Hurd autobuilders are posted. It is a high-traffic and high-volume list, and for that reason not archived, so you have to subscribe to see the messages.

It might be a good idea to record your intention to port something either in the list below or in the Alioth task tracker so other people do not do duplicated work.

Also, the ?HurdFr guys maintain their own liste des travaux de packaging.

Aside from the Alioth task tracker, here is a list of some packages (the important ones, as they're, e.g., blocking other packages from being built) that need someone to work on them.

When you have a patch to submit, please adhere to the patch submission guidelines.

There is also further information available about porting.

Add a new item titled:

TI-RPC replaces glibc's Sun RPC implementation, id:"4D0632C5.1040107@RedHat.com".

It needs some work on our side, id:"20101214213212.GU1095@kepler.schwinge.homeip.net".

Then, the Hurd's nfs translator and ?nfsd can be re-enabled, id:"87hb2j7ha7.fsf@gnu.org".

Posted 2011-11-04 21:53:40 UTC Tags:

IRC, freenode, #hurd, 2011-08-12

< zyg> did the segment registers had any purpose? I see fs is set equal to
  others, but on linux fs is 0 (atleast on this x86 box).
< braunr> zyg: it can be used by special applications like wine, yes
< zyg> braunr: thanks.. I'm reading up on linux actually. It seems gs can
  be used for TLS, fs in syscall to pass userspace.
< braunr> zyg: why are you interested in that ?
< zyg> a native compiler under linux places assumptions on fs register. So
  I'm trying to find out what it should do under gnumach/hurd.
< braunr> what compiler ?
< zyg> braunr: it's sbcl
< braunr> ok
< youpi> zyg: the same, basically
< zyg> ok.. looking at the code, I've remarked where it sets up FS, because
  /usr/include/asm/ldt.h:struct user_desc is missing. I must search for the
  equiv.
< youpi> zyg: mach/i386/mach_i386.h
< youpi> the descriptor structure
Posted 2011-09-01 07:27:33 UTC Tags:

LLVM needs a little bit of porting for being usable on GNU/Hurd.

Apparently this has already been done within Debian; http://anonscm.debian.org/viewvc/pkg-llvm/llvm/trunk/debian/patches/.

Posted 2011-07-16 09:56:11 UTC Tags:

Debian's openjdk-7-jre package depends on libaccess-bridge-java-jni (source package: java-access-bridge).

The latter one has openjdk-6-jdk as a build dependency, but that can be hacked around:

# ln -s java-7-openjdk /usr/lib/jvm/java-6-openjdk

Trying to build it:

$ LD_LIBRARY_PATH=/usr/lib/jvm/java-7-openjdk/jre/lib/i386/jli dpkg-buildpackage -b -uc -d
[...]
make[3]: Entering directory `/media/erich/home/thomas/tmp/libaccess-bridge-java-jni/java-access-bridge-1.26.2/idlgen'
/usr/lib/jvm/java-6-openjdk/bin/idlj \
                -pkgPrefix Bonobo org.GNOME \
                -pkgPrefix Accessibility org.GNOME \
                -emitAll -i /usr/share/idl/bonobo-activation-2.0 -i /usr/share/idl/at-spi-1.0 -i /usr/share/idl/bonobo-2.0 \
                -fallTie /usr/share/idl/at-spi-1.0/Accessibility.idl
/usr/share/idl/at-spi-1.0/Accessibility_Collection.idl (line 66):  WARNING: Identifier `object' collides with a keyword; use an escaped identifier to ensure future compatibility.
        boolean isAncestorOf (in Accessible object);
                                     ^
/usr/share/idl/at-spi-1.0/Accessibility_Component.idl (line 83):  WARNING: Identifier `Component' collides with a keyword; use an escaped identifier to ensure future compatibility.
  interface Component : Bonobo::Unknown {
            ^
Exception in thread "main" java.lang.AssertionError: Platform not recognized
        at sun.nio.fs.DefaultFileSystemProvider.create(DefaultFileSystemProvider.java:71)
        at java.nio.file.FileSystems$DefaultFileSystemHolder.getDefaultProvider(FileSystems.java:108)
        at java.nio.file.FileSystems$DefaultFileSystemHolder.access$000(FileSystems.java:89)
        at java.nio.file.FileSystems$DefaultFileSystemHolder$1.run(FileSystems.java:98)
        at java.nio.file.FileSystems$DefaultFileSystemHolder$1.run(FileSystems.java:96)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.nio.file.FileSystems$DefaultFileSystemHolder.defaultFileSystem(FileSystems.java:95)
        at java.nio.file.FileSystems$DefaultFileSystemHolder.<clinit>(FileSystems.java:90)
        at java.nio.file.FileSystems.getDefault(FileSystems.java:176)
        at sun.util.calendar.ZoneInfoFile$1.run(ZoneInfoFile.java:489)
        at sun.util.calendar.ZoneInfoFile$1.run(ZoneInfoFile.java:480)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.util.calendar.ZoneInfoFile.<clinit>(ZoneInfoFile.java:479)
        at sun.util.calendar.ZoneInfo.getTimeZone(ZoneInfo.java:658)
        at java.util.TimeZone.getTimeZone(TimeZone.java:559)
        at java.util.TimeZone.setDefaultZone(TimeZone.java:656)
        at java.util.TimeZone.getDefaultRef(TimeZone.java:623)
        at java.util.TimeZone.getDefault(TimeZone.java:610)
        at java.text.SimpleDateFormat.initializeCalendar(SimpleDateFormat.java:682)
        at java.text.SimpleDateFormat.<init>(SimpleDateFormat.java:619)
        at java.text.DateFormat.get(DateFormat.java:772)
        at java.text.DateFormat.getDateTimeInstance(DateFormat.java:547)
        at com.sun.tools.corba.se.idl.toJavaPortable.Util.writeProlog(Util.java:1139)
        at com.sun.tools.corba.se.idl.toJavaPortable.Skeleton.writeHeading(Skeleton.java:145)
        at com.sun.tools.corba.se.idl.toJavaPortable.Skeleton.generate(Skeleton.java:102)
        at com.sun.tools.corba.se.idl.toJavaPortable.InterfaceGen.generateSkeleton(InterfaceGen.java:159)
        at com.sun.tools.corba.se.idl.toJavaPortable.InterfaceGen.generate(InterfaceGen.java:108)
        at com.sun.tools.corba.se.idl.InterfaceEntry.generate(InterfaceEntry.java:110)
        at com.sun.tools.corba.se.idl.toJavaPortable.ModuleGen.generate(ModuleGen.java:75)
        at com.sun.tools.corba.se.idl.ModuleEntry.generate(ModuleEntry.java:83)
        at com.sun.tools.corba.se.idl.Compile.generate(Compile.java:324)
        at com.sun.tools.corba.se.idl.toJavaPortable.Compile.start(Compile.java:169)
        at com.sun.tools.corba.se.idl.toJavaPortable.Compile.main(Compile.java:146)
make[3]: *** [org/GNOME/Accessibility/Accessible.java] Error 1
make[3]: Leaving directory `/media/erich/home/thomas/tmp/libaccess-bridge-java-jni/java-access-bridge-1.26.2/idlgen'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/media/erich/home/thomas/tmp/libaccess-bridge-java-jni/java-access-bridge-1.26.2/idlgen'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/media/erich/home/thomas/tmp/libaccess-bridge-java-jni/java-access-bridge-1.26.2'
make: *** [debian/stamp-makefile-build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2

IRC, freenode, #hurd, 2011-08-10:

< jkoenig> and with my latest fix (hardwire os.name as "Linux"),
  java-access-bridge actually built \o/
< youpi> I wouldn't call it a "fix" :)
< jkoenig> true, but pretty much everything assumes we're either solaris,
  linux or windows :-/
< jkoenig> also we're actually using the Linux code which it is used to
  select throughout the JDK
< jkoenig> if it's any consolation, os.version stays "GNU-Mach
  1.3.99/Hurd-0.3" :-)
< youpi> ideally it should simply be changed to "GNU"
Posted 2011-07-08 20:35:03 UTC Tags:

The prelink package, as distributed via Debian unstable, does build on GNU/Hurd. After installing the satisfiable dependencies, use dpkg-buildpackage -b -uc -d to ignore SELinux and libc6-dev dependencies.

It is unclear whether it also does work. The testsuite (run manually) does FAIL on all tests, which is due to the prelinker doing something to the copied ld.so.1 so that it faults on every invocation. This does not happen on GNU/Linux.

Not much in the prelinker is Linux-specific. src/get.c's is_ldso_soname should already cover our ld.so.1 case (and what about ld.so?). At the end of src/arch-i386.c, .dynamic_linker has to be set properly. And, in that file there are some Linux process VM constants, of which REG2S and REG2E are the only relevant in the !exec_shield case. Probably these need to be adjusted. What else?

Posted 2011-07-05 22:50:43 UTC Tags:
$ git-new-workdir ~/tmp/binutils/git /media/hd1s1/tmp/master master
error: unable to create file gas/testsuite/gas/arm/attr-mfpu-vfpv3-d16.d (Interrupted system call)
Checking out files: 100% (12315/12315), done.
Already on 'master'
$ cd /media/hd1s1/tmp/master
$ git status
# On branch master
# Changes not staged for commit:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
#       modified:   gas/testsuite/gas/arm/attr-mfpu-vfpv3-d16.d
#
no changes added to commit (use "git add" and/or "git commit -a")
$ git checkout -f
$ git status
# On branch master
nothing to commit (working directory clean)

(Git issue is known.)

$ git-new-workdir ~/tmp/binutils/git /media/hd1s2/tmp/master master
error: unable to create file bfd/elf32-dlx.c (Interrupted system call)
error: unable to create file bfd/sunos.c (Interrupted system call)
error: unable to create file gas/testsuite/gas/arm/attr-mfpu-vfpv3-d16.d (Interrupted system call)
error: unable to create file gas/testsuite/gas/mmix/regx-op.d (Interrupted system call)
error: unable to create file gas/testsuite/gas/tic6x/reloc-bad-4.s (Interrupted system call)
error: unable to create file gold/testsuite/script_test_2.t (Interrupted system call)
error: unable to create file ld/testsuite/ld-mmix/loc7m.d (Interrupted system call)
error: unable to create file ld/testsuite/ld-powerpc/tlsexe.g (Interrupted system call)
Checking out files: 100% (12315/12315), done.
Already on 'master'
$ cd /media/hd1s2/tmp/master
$ git status
# On branch master
# Changes not staged for commit:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
#       modified:   bfd/elf32-dlx.c
#       modified:   bfd/sunos.c
#       modified:   gas/testsuite/gas/arm/attr-mfpu-vfpv3-d16.d
#       modified:   gas/testsuite/gas/mmix/regx-op.d
#       modified:   gas/testsuite/gas/tic6x/reloc-bad-4.s
#       modified:   gold/testsuite/script_test_2.t
#       modified:   ld/testsuite/ld-mmix/loc7m.d
#       modified:   ld/testsuite/ld-powerpc/tlsexe.g
#
no changes added to commit (use "git add" and/or "git commit -a")
$ git checkout -f
$ git status
# On branch master
nothing to commit (working directory clean)

Now you'd expect these directories to have identical content, but:

$ diff -x .git -ru /media/hd1s{1,2}/tmp/master/ > /tmp/diff
$ ls -l /tmp/diff
-rw-r--r-- 1 thomas thomas 613677 10. Jun 19:12 /tmp/diff
$ grep '^[^ @+-]' < /tmp/diff
diff -x .git -ru /media/hd1s1/tmp/master//ld/configure /media/hd1s2/tmp/master//ld/configure

(Note that this isn't a file that Git had issues with.)

Try again:

$ diff -x .git -ru /media/hd1s{1,2}/tmp/master/ > /tmp/diff_
$ ls -l /tmp/diff*
-rw-r--r-- 1 thomas thomas 613677 10. Jun 19:12 /tmp/diff
-rw-r--r-- 1 thomas thomas 613677 10. Jun 19:17 /tmp/diff_
$ cmp /tmp/diff{,_}; echo $?
0

At least it's consistent. Force a reload:

# settrans -ag /media/hd1s1
# settrans -ag /media/hd1s2

Try again:

$ diff -x .git -ru /media/hd1s{1,2}/tmp/master/ > /tmp/diff__
$ ls -l /tmp/diff*
-rw-r--r-- 1 thomas thomas 613677 10. Jun 19:12 /tmp/diff
-rw-r--r-- 1 thomas thomas 613677 10. Jun 19:17 /tmp/diff_
-rw-r--r-- 1 thomas thomas 613677 10. Jun 19:30 /tmp/diff__
$ cmp /tmp/diff{,__}; echo $?
0

Consistent; thus very likely corrupt on-disk.

After a few tries, the pattern generally is that for the files where there are differences, once the file regularely ends, its content appears once more. That is, the files' content appears once (regularely), and then the same again.

Some more copying:

$ (cd /media/hd1s1/tmp/ && cp -a master master_)
$ (cd /media/hd1s2/tmp/ && cp -a master master_)
$ diff -x .git -ru /media/hd1s1/tmp/master{,_}/ > /tmp/diff1
$ diff -x .git -ru /media/hd1s2/tmp/master{,_}/ > /tmp/diff2
$ ls -l /tmp/diff{1,2}
-rw-r--r-- 1 thomas thomas 0 10. Jun 19:46 /tmp/diff1
-rw-r--r-- 1 thomas thomas 0 10. Jun 19:46 /tmp/diff2

No further difference.


$ git-new-workdir git master master
$ diff -x .git -ur tar_master/ master/ > master.diff

$ rm -rf ar_master* && (cd git/ && git archive master) | (mkdir ar_master && cd ar_master/ && tar -x) && diff -x .git -ru tar_master/ ar_master/ > ar_master.diff; ls -l ar_master.diff
$ (cd git/ && git archive master) | md5sum

2011-06-13

-> git-core-2

Posted 2011-06-13 14:44:12 UTC Tags:
$ git-new-workdir /media/kepler-data/home/thomas/tmp/source/binutils/git master master
fatal: Out of memory? mmap failed: No such device
$ echo $?
128
$ showtrans /media/kepler-data
/hurd/nfs kepler.schwinge.homeip.net:/media/data

With sh -x:

[...]
+ ln -s /media/kepler-data/home/thomas/tmp/source/binutils/git/.git/remotes master/.git/remotes
+ ln -s /media/kepler-data/home/thomas/tmp/source/binutils/git/.git/rr-cache master/.git/rr-cache
+ ln -s /media/kepler-data/home/thomas/tmp/source/binutils/git/.git/svn master/.git/svn
+ cd master
+ cp /media/kepler-data/home/thomas/tmp/source/binutils/git/.git/HEAD .git/HEAD
+ git checkout -f master
fatal: Out of memory? mmap failed: No such device

As one can easily guess (and confirm with rpctrace), git tries to ?mmap a file via the nfs translator, this fails, and it isn't prepared to cope with that:

[...]
  88->dir_lookup (".git/objects/pack/pack-37ca560e7877fa0cc6e5ddcd556aa73e5a3e3f40.idx" 2049 0) = 0 3 "/media/kepler-data/home/thomas/tmp/source/binutils/git/.git/objects/pack/pack-37"  (null)
  62->dir_lookup ("media/kepler-data/home/thomas/tmp/source/binutils/git/.git/objects/pack/pack-37c" 2049 0) = 0 1 "/home/thomas/tmp/source/binutils/git/.git/objects/pack/pack-37ca560e7877fa0cc6e5"   61
  61->dir_lookup ("home/thomas/tmp/source/binutils/git/.git/objects/pack/pack-37ca560e7877fa0cc6e5d" 2049 0) = 0 1 ""   84
task3741-> 3206 (pn{ 33}) = 0
  84->term_getctty () = 0xfffffed1 ((ipc/mig) bad request message ID)
  84->io_stat_request () = 0 {1 704 0 36308992 0 0 -1 33060 1 1000 1000 4712 0 1307711395 0 1307657003 0 1307657003 0 4096 16 0 1000 0 0 100663296 1836017780 29537 0 0 0 0}
  84->io_map_request () = 0x4000002d (Operation not supported)
  84->io_map_request () = 0x4000002d (Operation not supported)
  76->io_write_request ("fatal: Out of memory? mmap failed: No such device
" -1) = 0 50
  64->proc_mark_exit_request (32768 0) = 0
task3741-> 2008 () = 0
Child 3741 exited with 128
Posted 2011-06-10 16:47:19 UTC Tags:

In order to use DHCP, you need to install the ifup and isc-dhcp-client packages, and manually create the following two symbolic links:

# ln -s ../rcS.d/S06ifupdown-clean ../rcS.d/S11networking /etc/rc.boot/

During execution at boot time, the S11networking script will emit some error messages while trying to configure the loopback interface. These are not fatal.

Debian GNU/Hurd doesn't currently execute's Debian standard /etc/rcS.d/* boot scripts, but has its own /libexec/rc script -- which integrates scripts from /etc/rc.boot/ instead.

Open Issues

Posted 2011-05-20 18:14:58 UTC Tags:

Comparing to GNU/Linux, on GNU/Hurd it happens much more often and easily for screen sessions to become dead. This is annoying, as it defeats one of screen's main purposes.

One reproducible scenario goes like this

  • ssh [somewhere],

  • start a screen session, and some long-running process P in there,

  • at some point the link is forcefully terminated (also known as disconnect after 24 hours with consumer DSL),

  • P will continue to execute,

  • at some point, P will terminate / hang (after having received some kind of signal?), and the screen session will be reported as dead.

Another one, not as often reproduced

  • ssh [somewhere],

  • start a screen session, and some long-running process P in there,

  • at some point the link is forcefully terminated (also known as disconnect after 24 hours with consumer DSL),

  • ssh [somewhere],

  • screen -x, and notice that P will immediatelly terminate / hang (after having received some kind of signal?), and the screen session will immediatelly be reported as dead. (Perhaps the other way round: upon re-attaching, the screen session goes bonkers and takes P with it?)

IRC, freenode, #hurd, 2011-10-19

<antrik> tschwinge: hm... haven't seen screen dying in a long time
<tschwinge> antrik: It's easy, and goes like this: have a session on one
  system, log in from another, do screen -x and wait some time.
<antrik> I do this regularily. haven't had a crash in ages.
<antrik> (BTW, I'm not sure I ever had a crash on srceen -x... at that
  time, I wasn't using -x. I often had crashes with screen -r. my
  impression back then was that it works better when doing -rd -- in fact,
  I always do that now, so I can't say whether crashes still happen with
  only -r...)

2011-10-26:

<antrik> so I was saying the other day that I haven't had a screen crash in
  a long time... well, here it was :-(
<antrik> this time it didn't crash on reconnect though, but already
  before. probably when I killed the hanging ssh connection
Posted 2010-12-01 19:00:58 UTC Tags:

On 2010-11-28, Austin English contacted us, stating that he's working on porting Wine to the GNU/Hurd.

It is not yet clear how difficult this is going to be, what sort of requirements Wine has: only libc / POSIX / etc., or if there are advanced things like system call trapping involved, too.

Samuel suspects that there's some need for LDT table allocation. There is kernel support for this, however.

IRC, freenode, #hurd, 2011-08-11

< arethusa> I've been trying to make Wine work inside a Debian GNU/Hurd VM,
  and to that end, I've successfully compiled the latest sources from Git
  after installing the libc (devel) packages from experimental and
  personally patching Wine with http://pastebin.com/rg6dx09G

rg6dx09G.patch

< arethusa> my question is, when trying to launch Wine, I'm seeing "wine
  client error:0: sendmsg: (os/kern) invalid address" from the client side,
  whereas the wineserver seems to be starting and running correctly, how
  could I debug this issue further? using rpctrace doesn't seem to help, as
  the trace just hangs when run on the Wine loader instead of yielding
  insight
< kilobug> arethusa: isn't there a wine debuguer that can start a gdb when
  wine encounters an error or something like that ?
< arethusa> it's too early for that
< kilobug> or least give you a full traceback of the wine code where the
  error occur ?
< arethusa> the error is happening during initial connect to the
  wineserver, in dlls/ntdll/server.c
< arethusa> but that doesn't help me figure out why sendmsg would error out
  in this way
< arethusa>
  http://source.winehq.org/git/wine.git/blob/HEAD:/dlls/ntdll/server.c#l361
< azeem_> arethusa: probably some of the msghdr entries are not supported
  by the Hurd's glib
< azeem_> c
< pinotree> haha, socket credentials, which we don't support yet
< azeem_> yep
< pinotree> youpi: ↑ another case ;)
< azeem_> arethusa: just implement those and it should work
< kilobug> in pflocal ? or glibc ?
< pinotree> pflocal
< arethusa> azeem_: hmm, okay, thanks
< pinotree> arethusa: their lack is a known issue, and makes things like
  dbus and gamin not work
< arethusa> it's
  https://www.gnu.org/software/hurd/open_issues/sendmsg_scm_creds.html and
  related links I assume?

sendmsg scm creds

< youpi> yes
< pinotree> (but that patch is lame)
Posted 2010-11-29 16:08:30 UTC Tags:

There is a FOSS Factory bounty (p274) on this task.

There are now specialized variants of Debian's libc package, libc0.3-i686 and libc0.3-xen.

On Thu, Oct 07, 2010 at 11:22:46AM +0200, Samuel Thibault wrote:

Thomas Schwinge, le Thu 07 Oct 2010 10:11:07 +0200, a écrit :

Also, this text says ``will be selected instead when running under Xen'' -- is this meant to be automatically done?

It's supposed to be, we need to add support for it.

If so, then it didn't work.

Yes, you need to copy it by hand. Same for libc0.3-i686, we just need to steal the cpuid code from the kfreebsd port of glibc.


Having working CPUID code inside glibc is also a prerequisite for proper IFUNC support.

Posted 2010-10-07 09:33:17 UTC Tags:

Will need to have something like Linux' cgroups. Introduction: Ressourcen-Verwaltung mit Control Groups (cgroups) (german), Daniel Gollub, Stefan Seyfried, 2010-10-14.

Likely there's also some other porting needed.

IRC, OFTC, #debian-hurd, 2011-05-19

<pinotree> pochu: http://news.gmane.org/gmane.comp.gnome.desktop - the
  "systemd as dependency" and all the messages in it don't give me a bright
  future for gnome on hurd...
<pochu> yeah, I've read the thread
<pochu> it's only a proposal so far... hopefully it'll be rejected, or they
  will only accept the interfaces that other OSes can implement...
<pochu> we'll see
<pinotree> you can always help me with kde on hurd, would be nice ;)
<pochu> hehe
<pinotree> pochu: well, even if the depenency is rejected, the whole «don't
  give a damn about non-linux and only bless linux for the "gnome os"» is a
  bit... worrying attitude
<pochu> yeah... it doesn't come from all the community though
<pochu> I'm sure some people have always thought that way
<tschwinge> Or we could get systemd going?  :-)
<pochu> good luck with that :p
<guillem> tschwinge: haha!? :)
<tschwinge> That bad?
<guillem> tschwinge: if you mean by that forking indefinitely then maybe
<guillem> tschwinge: upstream has expressely stated multiple times, no
  interest whatsoever in any kind of portability to anything non-Linux
<guillem> or even older Linux versions!
<guillem> to the point of rejecting patches, because they "clutter" the
  source code...
<tschwinge> Well, then let's ``just'' implement the Linux interfaces.  :-)
<guillem> tschwinge: then you'll be always playing catch up
<guillem> tschwinge: for example several of the Linux-only things upstream
  makes heavy use of, are pretty recent Linux-only additions to the kernel,
  but equivalents have been present on FreeBSD for years
<tschwinge> Yeah.  I'm half-serious, half-joking.
<tschwinge> I haven't looked at the systemd code at all.
<guillem>
  https://mail.gnome.org/archives/desktop-devel-list/2011-May/msg00447.html
  for a list of its dependencies
<guillem> some are just glibc extensions though
<guillem> and some are IMO optional and should be conditionalized, but...
<guillem> pochu: I don't think that attitude is that old, there was a time
  when Linux was not used widely, or even that functional, I think it has
  been taking strength since the Linux Plumbers Cartel started :)
<guillem> as in one thing is not caring about anything non-Linux, the other
  is outright rejecting portability fixes
<guillem> tschwinge: in any case, these "recent" events are "pissing me
  off" to the point of having considered several times implementing
  portable replacements for some of those Utopia projects, the problem as
  always is time though :)
<guillem> tschwinge: and the issue is not only with systemd, upstart's
  upstream has the same approach to portability, if you want to port it,
  you'll have to maintain a fork
<pochu> let's create our own init system, make it better than anyone else,
  and when people start switching to it, let's start using hurd-only APIs
  :)
<tschwinge> We already had someone work on that.  Like ten years ago.  DMD.
  Daemon Managing Daemons.  <http://directory.fsf.org/project/DMD/>
<guillem> the real problem with that attitude is not the lack of care for
  portabilty, the real problem is that these people are pushing for their
  stuff all over the stack, and most of the time deprecating their own
  stuff after a while when they have rewritten it from scratch, leaving the
  burden of maintaining the old stuff to the other ports
<guillem> witness HAL, ConsoleKit, etc etc
<guillem> (anyway enough ranting I guess :)
<tschwinge> Yeah, it's true, though.
<pochu> agreed

Requires Interfaces

In the thread starting here, a message has been posted that contains the following list (no claim for completeness) of interfaces that are used in (two source code files of) systemd:

  • cgroups
  • namespaces
  • selinux
  • autofs4
  • capabilities
  • udev
  • oom score adjust
  • RLIMIT_RTTIME
  • RLIMIT_RTPRIO
  • ionice
  • SCHED_RESET_ON_FORK
  • /proc/$PID/stat
  • fanotify
  • inotify
  • TIOCVHANGUP
  • IP_TRANSPORT
  • audit
  • F_SETPIPE_SZ
  • CLONE_xxx
  • BTRFS_IOC_DEFRAG
  • PR_SET_NAME
  • PR_CAPBSET_DROP
  • PR_SET_PDEATHSIG
  • PR_GET_SECUREBITS
  • /proc/$PID/comm
  • /proc/$PID/cmdline
  • /proc/cmdline
  • numerous GNU APIs like asprintf
  • SOCK_CLOEXEC, O_CLOEXEC
  • /proc/$PID/fd
  • /dev/tty0
  • TIOCLINUX
  • VT_ACTIVATE
  • TIOCNXCL
  • KDSKBMODE
  • /dev/random
  • /dev/char/
  • openat() and friends
  • /proc/$PID/root
  • waitid()
  • /dev/disk/by-label/
  • /dev/disk/by-uuid/
  • /sys/class/tty/console/active
  • /sys/class/dmi/id
  • /proc/$PID/cgroup
  • \033[3J
  • /dev/rtc
  • settimeofday() and its semantics
Posted 2010-09-20 11:39:04 UTC Tags:

IRC, unknown channel, unknown date.

<pinotree> tschwinge: btw, would you be able to tell if and what's wrong with a socket-related problem?
<pinotree> it is reproducible with a very small self-contained C library
<pinotree> http://0pointer.de/lennart/projects/libasyncns/
<pinotree> it has a test case with it, which fails
<pinotree> tschwinge: if that can ring some bell, imho the problem is related to SOCK_STREAM sockets created with socketpair and used with send/recv
Posted 2010-07-30 14:36:06 UTC Tags:

IRC, unknown channel, 2008-05-26 and later

<paakku> In elinks/src/network/state.h, there is an assumption that values of errno are between 0 and 100000.  Now looking at glibc-2.5/sysdeps/mach/hurd/bits/errno.h, I see that you're using values outside this range.  Have there been problems because of this?
<youpi> eeerf
<youpi> I had never seen a program assuming that
<youpi> that sucks
<paakku> It can be fixed, but that'd require some work, so I'd like to first have a clear idea of the effects.
<youpi> fixed where ?
<paakku> in elinks
<youpi> k
<paakku> by allocating just one number from our enum connection_state for system errors, and then stashing the errno value in a separate variable.
<paakku> Anyway, if you see this cause any user-visible bugs in ELinks, please report.

<kahmalo> I mentioned here on 2008-05-26 that ELinks assumes errno values are between 0 and 100000 whereas the Hurd uses other values.  I fixed this in ELinks last weekend; the most recent 0.12 and 0.13 snapshots should include the fix.  If you find any remaining errno assumptions, please post to: http://bugzilla.elinks.cz/show_bug.cgi?id=1013
<kahmalo> or to one of our mailing lists.
<kahmalo> I guess the pflocal select() bug http://savannah.gnu.org/bugs/?22861 is the primary hindrance to running ELinks on the Hurd.  Has any decision been made on how that will be fixed?
Posted 2010-07-24 10:23:41 UTC Tags:
<terpstra> do the buildds also crash?
<youpi> sometimes
<youpi> usually when a configure scripts tries to find out how large a
  command line can be
<youpi> (thus eating all memory)
Posted 2009-10-23 06:49:26 UTC Tags:

Here is a replacement to use, until the real top works, which depends on procfs and some porting.

$ while :; do ps -e -v -s CPU --top=22 -r; sleep 5; done
Posted 2009-10-23 06:33:35 UTC Tags:

bash 4.0 vs. typing C-c (SIGINT)

Will show -bash: echo: write error: (ipc/mig) wrong reply message ID unter certain conditions.

After having noticed that this error doesn't occur if starting bash with --norc, I isolated it to the following command in .bashrc:

case $TERM in
  xterm* | rxvt*)
    PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}:${PWD}\007"';;
esac

... and indeed:

tschwinge@flubber:~ $ echo "$TERM" -- "$PROMPT_COMMAND"
xterm -- echo -ne "\033]0;${USER}@${HOSTNAME}:${PWD}\007"
tschwinge@flubber:~ $ ^C
-bash: echo: write error: (ipc/mig) wrong reply message ID
tschwinge@flubber:~ $ PROMPT_COMMAND=
tschwinge@flubber:~ $ ^C
tschwinge@flubber:~ $ 

bash-4.0$ PROMPT_COMMAND='echo >&2 -n foo\ '
foo bash-4.0$ ^C

bash-4.0$ PROMPT_COMMAND='echo >&1 -n foo\ '
foo bash-4.0$ ^C
bash: echo: write error: (ipc/mig) wrong reply message ID

bash-4.0$ PROMPT_COMMAND='/bin/echo >&1 -n foo\ '
foo bash-4.0$ ^C
bash: start_pipeline: pgrp pipe: (ipc/mig) wrong reply message ID

So, there's something different with stdout in / after the SIGINT handler.

Posted 2009-10-08 12:50:56 UTC Tags:

Typing C-c (SIGINT) in a screen session (Debian package 4.0.3-14; -11 is fine):

  • shell prompt: no reaction (nothing printed)
  • sleep 10 running: ^C printed, but SIGINT is not sent.

Debian bug #522689#38.


Revisit this issue: Debian bug #97343 -- special handling of TIOCSCTTY depending on __GNU__.


#ifdef linux and friends are used in quite a number of places.


All diffs are GNU/Linux vs. GNU/Hurd.

 /*
  * If your system supports BSD4.4's seteuid() and setegid(), define
  * HAVE_SETEUID.
  */
-/* #undef HAVE_SETEUID */
+#define HAVE_SETEUID 1

TODO: check.


 /*
  * define HAVE_SVR4_PTYS if you have a /dev/ptmx character special
  * device and support the ptsname(), grantpt(), unlockpt() functions.
  */
-#define HAVE_SVR4_PTYS 1
+/* #undef HAVE_SVR4_PTYS */

 /*
  * define HAVE_GETPT if you have the getpt() function.
  */
 #define HAVE_GETPT 1

 /*
  * define HAVE_OPENPTY if your system has the openpty() call.
  */
-/* #undef HAVE_OPENPTY */
+#define HAVE_OPENPTY 1

 /* 
  * define PTYRANGE0 and or PTYRANGE1 if you want to adapt screen
  * to unusual environments. E.g. For SunOs the defaults are "qpr" and 
  * "0123456789abcdef". For SunOs 4.1.2 
  * #define PTYRANGE0 "pqrstuvwxyzPQRST" 
  * is recommended by Dan Jacobson.
  */
-/* #undef PTYRANGE0 */
-/* #undef PTYRANGE1 */
+#define PTYRANGE0 "pq"
+#define PTYRANGE1 "0123456789abcdefghijklmnopqrstuv"

TODO: check: HAVE_SVR4_PTYS is due to configure.in doing test -c /dev/ptmx. But: even if we don't have that file, we still have ptsname, grantpt, unlockpt.


 gcc -c -I. -I.    -g -O2 -O2 -g -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers pty.c
+pty.c: In function 'OpenPTY':
+pty.c:323: warning: implicit declaration of function 'openpty'
+pty.c: At top level:
+pty.c:75: warning: 'PtyName' defined but not used
+pty.c:86: warning: 'PtyProto' defined but not used
+pty.c:87: warning: 'TtyProto' defined but not used

TODO: check.


--- linux/osdef.h       2009-10-06 18:43:53.000000000 +0200
+++ screen-4.0.3/osdef.h        2009-10-06 18:49:49.000000000 +0200
@@ -42,13 +42,19 @@
 #endif

 #ifdef SYSV
+extern char *strchr __P((char *, int));
+extern char *strrchr __P((char *, int));
+extern char *memset __P((char *, int, int));
+extern int   memcmp __P((char *, char *, int));
 #else
 #endif

 #ifndef USEBCOPY
 # ifdef USEMEMCPY
+extern void  memcpy __P((char *, char *, int));
 # else
 #  ifdef USEMEMMOVE
+extern void  memmove __P((char *, char *, int));
 #  else
 #  endif
 # endif

TODO: check.


Posted 2009-10-06 21:37:48 UTC Tags:
m4 (1.4.13-1+hurd.2) unreleased; urgency=low

  * Drop stack overflow (checks/stackovf) check, test-c-stack and
    test-c-stack2 checks, and /dev/null/ (test-open and test-fopen) checks.

 -- Samuel Thibault <samuel.thibault@ens-lyon.org>  Tue, 18 Aug 2009 20:54:30 +0000

<youpi> that was a quick fix  (as not having m4 makes autoconf uninstallable, which is quite a problem)
<youpi> there's probably something wrong in the stack management of the Hurd, I haven't investigated
Posted 2009-10-01 21:27:18 UTC Tags:

GNU Emacs mostly does work, however there are a few issues.

  • dired on a directory hangs. (Use C-g C-g to break the unresponsive operation.)

  • Configuration in src/s/: gnu.h uses bsd-common.h. gnu-kfreebsd.h uses gnu-linux.h -- we probably should too.

    • gnu-linux.h makes a few things depend on /proc (also see HAVE_PROCFS) -- either resort to our own ways, or enhance our procfs accordingly.

      • sysdep.c
  • Got a hang when compiling GNU Emacs 23, when it was compiling .el to .elc files. Looked like busy-looping inside glibc. This was not reproducible so far.

  • Debian emacs23_23.1+1-2, grubber, (probably) busy-looping in ext2fs on /media/data when resuming emacs23 build in ~/tmp/emacs/emacs23-*/ (dpkg-buildpackage -B -uc -nc 2>&1 | tee L). No modifications to emacs23-* so far, I think. Hangs always in the same place, it seems, and reproducible. Tarred to emacs23-23.1+1.tar.bz2 (beware: empty and zero-permission files: emacs23-23.1+1/.pc/debian-site-init-el.diff/lisp/site-init.el, emacs23-23.1+1/.pc/autofiles.diff/src/config.in~). At hang-time: the rootfs is fine (syncfs -c -s / works; syncfs involving /media/data hangs). Plan: GDB on that ext2fs, and see what's hanging / locked.


2010-10-11

Apparently, none of the Debian emacs packages are installable at the moment.

Try to compile bzr trunk.

System (sort-of) crashed during build. Perhaps while / or shortly after dumping src/emacs, as there was such a zero-sized file. (Log file doesn't show anything useful.) Removed the truncated src/emacs, continued build:

[...]
Compiling /home/tschwinge/tmp/emacs/trunk/lisp/cedet/srecode/mode.el
Parsing  *srecode-map-tmp* (LALR)...
Parsing  *srecode-map-tmp* (LALR)...done
Segmentation fault
make[2]: *** [cedet/srecode/mode.elc] Error 139
make[2]: Leaving directory `/media/data/home/tschwinge/tmp/emacs/trunk.build/lisp'
make[1]: *** [compile-main] Error 2
make[1]: Leaving directory `/media/data/home/tschwinge/tmp/emacs/trunk.build/lisp'
make: *** [lisp] Error 2

Command line:

$ EMACSLOADPATH=/home/tschwinge/tmp/emacs/trunk/lisp LC_ALL=C /home/tschwinge/tmp/emacs/trunk.build/src/emacs -batch --no-site-file  -f batch-byte-compile /home/tschwinge/tmp/emacs/trunk/lisp/cedet/srecode/mode.el

GDB:

Program received signal SIGSEGV, Segmentation fault.
mark_object (arg=1) at /home/tschwinge/tmp/emacs/trunk/src/alloc.c:5343
5343            if (STRING_MARKED_P (ptr))
(gdb) bt
#0  mark_object (arg=1) at /home/tschwinge/tmp/emacs/trunk/src/alloc.c:5343
#1  0x0818080f in Fgarbage_collect () at /home/tschwinge/tmp/emacs/trunk/src/alloc.c:4993
#2  0x08196db3 in Ffuncall (nargs=1, args=0x23fce70) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2987
#3  0x081ce8e1 in Fbyte_code (bytestr=139696577, vector=141708997, maxdepth=28) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#4  0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#5  0x08196bb3 in Ffuncall (nargs=1, args=0x23fcff0) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#6  0x081ce8e1 in Fbyte_code (bytestr=139922913, vector=141583493, maxdepth=28) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#7  0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#8  0x08196bb3 in Ffuncall (nargs=3, args=0x23fd170) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#9  0x081ce8e1 in Fbyte_code (bytestr=140515737, vector=141583205, maxdepth=24) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#10 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#11 0x08196bb3 in Ffuncall (nargs=2, args=0x23fd2f0) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#12 0x081ce8e1 in Fbyte_code (bytestr=139911193, vector=139312997, maxdepth=12) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#13 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#14 0x08196bb3 in Ffuncall (nargs=3, args=0x23fd460) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#15 0x081ce8e1 in Fbyte_code (bytestr=136508105, vector=136508125, maxdepth=20) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#16 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#17 0x08196bb3 in Ffuncall (nargs=3, args=0x23fd5e0) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#18 0x081ce8e1 in Fbyte_code (bytestr=136508849, vector=136508869, maxdepth=20) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#19 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#20 0x08195bff in apply_lambda (fun=136508805, args=139814646, eval_flag=1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3100
#21 0x08195ef4 in Feval (form=139814582) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2412
#22 0x081bb206 in readevalloop (readcharfun=138475290, stream=<value optimized out>, sourcename=139636697, printflag=0, unibyte=138364586, readfun=138364586,
start=138364586, end=138364586, evalfun=<value optimized out>) at /home/tschwinge/tmp/emacs/trunk/src/lread.c:1734
#23 0x081bbad7 in Fload (file=140023529, noerror=138364586, nomessage=138364610, nosuffix=138364586, must_suffix=138364586)
at /home/tschwinge/tmp/emacs/trunk/src/lread.c:1225
#24 0x081a1357 in Frequire (feature=141037690, filename=138364586, noerror=138364586) at /home/tschwinge/tmp/emacs/trunk/src/fns.c:2694
#25 0x08196d83 in Ffuncall (nargs=2, args=0x23fdb90) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2996
#26 0x081ce8e1 in Fbyte_code (bytestr=140023705, vector=141489853, maxdepth=8) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#27 0x08196304 in Feval (form=141177630) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2358
#28 0x081bb206 in readevalloop (readcharfun=138475290, stream=<value optimized out>, sourcename=140023785, printflag=0, unibyte=138364586, readfun=138364586,
start=138364586, end=138364586, evalfun=<value optimized out>) at /home/tschwinge/tmp/emacs/trunk/src/lread.c:1734
#29 0x081bbad7 in Fload (file=139743441, noerror=138364586, nomessage=138364610, nosuffix=138364586, must_suffix=138364586)
at /home/tschwinge/tmp/emacs/trunk/src/lread.c:1225
#30 0x081a1357 in Frequire (feature=140528330, filename=138364586, noerror=138364586) at /home/tschwinge/tmp/emacs/trunk/src/fns.c:2694
#31 0x08196d83 in Ffuncall (nargs=2, args=0x23fe030) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2996
#32 0x081ce8e1 in Fbyte_code (bytestr=139743489, vector=139592949, maxdepth=8) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#33 0x08196304 in Feval (form=139785254) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2358
#34 0x081bb206 in readevalloop (readcharfun=138475290, stream=<value optimized out>, sourcename=139743569, printflag=0, unibyte=138364586, readfun=138364586,
start=138364586, end=138364586, evalfun=<value optimized out>) at /home/tschwinge/tmp/emacs/trunk/src/lread.c:1734
#35 0x081bbad7 in Fload (file=139985769, noerror=138364586, nomessage=138364610, nosuffix=138364586, must_suffix=138364586)
at /home/tschwinge/tmp/emacs/trunk/src/lread.c:1225
#36 0x081a1357 in Frequire (feature=140528282, filename=138364586, noerror=138364586) at /home/tschwinge/tmp/emacs/trunk/src/fns.c:2694
#37 0x08196d83 in Ffuncall (nargs=2, args=0x23fe5c4) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2996
#38 0x0819879e in Fapply (nargs=2, args=0x23fe5c4) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2453
#39 0x08196e26 in Ffuncall (nargs=3, args=0x23fe5c0) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2971
#40 0x081ce8e1 in Fbyte_code (bytestr=139665665, vector=140243293, maxdepth=12) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#41 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#42 0x08196bb3 in Ffuncall (nargs=2, args=0x23fe730) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#43 0x081ce8e1 in Fbyte_code (bytestr=139663633, vector=140113917, maxdepth=16) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#44 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#45 0x08196bb3 in Ffuncall (nargs=2, args=0x23fe8a0) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#46 0x081ce8e1 in Fbyte_code (bytestr=139651313, vector=141733317, maxdepth=16) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#47 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#48 0x08196bb3 in Ffuncall (nargs=1, args=0x23fea20) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#49 0x081961cd in Feval (form=142062606) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2324
#50 0x08198ec2 in internal_lisp_condition_case (var=139619738, bodyform=142062606, handlers=142059126) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:1407
#51 0x081cdb3a in Fbyte_code (bytestr=139651065, vector=138947149, maxdepth=64) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:869
#52 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#53 0x08196bb3 in Ffuncall (nargs=3, args=0x23fed10) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#54 0x081ce8e1 in Fbyte_code (bytestr=139638617, vector=140190309, maxdepth=32) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#55 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#56 0x08195bff in apply_lambda (fun=141815293, args=139024998, eval_flag=1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3100
#57 0x08195ef4 in Feval (form=139025038) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2412
#58 0x08198ec2 in internal_lisp_condition_case (var=138727490, bodyform=139025038, handlers=138994086) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:1407
#59 0x081cdb3a in Fbyte_code (bytestr=141397873, vector=139422605, maxdepth=12) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:869
#60 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#61 0x08196bb3 in Ffuncall (nargs=2, args=0x23ff150) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#62 0x081ce8e1 in Fbyte_code (bytestr=141396361, vector=138448733, maxdepth=20) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#63 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#64 0x08196bb3 in Ffuncall (nargs=1, args=0x23ff2d0) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#65 0x081ce8e1 in Fbyte_code (bytestr=136699577, vector=136699597, maxdepth=40) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#66 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#67 0x08196bb3 in Ffuncall (nargs=2, args=0x23ff460) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#68 0x081ce8e1 in Fbyte_code (bytestr=136685793, vector=136685813, maxdepth=28) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#69 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#70 0x08196bb3 in Ffuncall (nargs=1, args=0x23ff5e0) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3047
#71 0x081ce8e1 in Fbyte_code (bytestr=136683265, vector=136683285, maxdepth=24) at /home/tschwinge/tmp/emacs/trunk/src/bytecode.c:679
#72 0x08196894 in funcall_lambda (fun=<value optimized out>, nargs=<value optimized out>, arg_vector=0x1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3174
#73 0x08195bff in apply_lambda (fun=136683245, args=138364586, eval_flag=1) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:3100
#74 0x08195ef4 in Feval (form=138740766) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:2412
#75 0x0812dd83 in top_level_2 () at /home/tschwinge/tmp/emacs/trunk/src/keyboard.c:1336
#76 0x081951dc in internal_condition_case (bfun=0x812dd70 <top_level_2>, handlers=138394034, hfun=0x8132020 <cmd_error>)
at /home/tschwinge/tmp/emacs/trunk/src/eval.c:1460
#77 0x08131de5 in top_level_1 (ignore=138364586) at /home/tschwinge/tmp/emacs/trunk/src/keyboard.c:1344
#78 0x081952a9 in internal_catch (tag=138392170, func=0x8131d80 <top_level_1>, arg=138364586) at /home/tschwinge/tmp/emacs/trunk/src/eval.c:1204
#79 0x08131e53 in command_loop () at /home/tschwinge/tmp/emacs/trunk/src/keyboard.c:1299
#80 0x0813220a in recursive_edit_1 () at /home/tschwinge/tmp/emacs/trunk/src/keyboard.c:929
#81 0x08132332 in Frecursive_edit () at /home/tschwinge/tmp/emacs/trunk/src/keyboard.c:991
#82 0x0812727b in main (argc=<value optimized out>, argv=0x23ffad8) at /home/tschwinge/tmp/emacs/trunk/src/emacs.c:1718

Next: restarted from scratch, rebuilt without optimizations. --prefix=$PWD.install --build=i686-pc-gnu --enable-asserts --enable-checking=all CFLAGS=-g

$ make
[...]
Dumping under the name emacs [sits here for a long time]

$ vmstat
pagesize:          4K
size:            324M
free:           9.16M
active:           56M
inactive:        242M
wired:          17.6M
zero filled:    8.75G
reactivated:       0 
pageins:         289M
pageouts:        371M
page faults: 12508128
cow faults:   1411724
memobj hit ratio: 99%
swap size:       512M
swap free:       512M

Apparently low memory, but doesn't swap out.

Uses a lot of CPU time, as observed with xm top.

Creating another screen window as user tschwinge doesn't get to the shell prompt.

Running vmstat works in a screen window that is already open, but running ps -Af just hangs; adding -M helps.

Perhaps the /media/data/ file system (which backs /home/) is in a inconsistent state / deadlocked?

More specifically, this does not work / does not exit:

login> syncfs -s -c /media/data/ &
[2] 10785

But this works:

login> syncfs -s -c / &
[3] 10786
login> 
[3]+  Done                    syncfs -s -c /

Thus, the rootfs still is responsive; /media/data/ is not.

login> ps -F hurd-long -T -M -w -A &
[4] 10796
login>   PID TH#  UID  PPID  PGrp  Sess TH  Vmem   RSS %CPU     User   System Args
    0        0     1     1     1 16  132M    1M  0.0  0:04.84  0:54.84 /hurd/proc
        0                                        0.0  0:00.00  0:00.13 
        1                                        0.0  0:00.30  0:03.55 
        2                                        0.0  0:00.30  0:04.21 
        3                                        0.0  0:00.65  0:06.88 
        4                                        0.0  0:00.02  0:00.31 
        5                                        0.0  0:00.32  0:03.72 
        6                                        0.0  0:00.00  0:00.23 
        7                                        0.0  0:00.00  0:00.03 
        8                                        0.0  0:00.30  0:03.17 
        9                                        0.0  0:00.47  0:04.69 
       10                                        0.0  0:00.62  0:06.42 
       11                                        0.0  0:00.40  0:05.91 
       12                                        0.0  0:00.47  0:04.18 
       13                                        0.0  0:00.10  0:00.73 
       14                                        0.0  0:00.56  0:05.97 
       15                                        0.0  0:00.26  0:04.61 
    1        0     1     1     1  1  146M  368K  0.0  0:00.00  0:00.03 /hurd/init root=device:hd0
        0                                        0.0  0:00.00  0:00.03 
    2        -     1     1     1  7  418M 19.5M  0.0  0:00.00  0:12.16 root=device:hd0
        0                                        0.0  0:00.00  0:00.00 
        1                                       92.6  0:00.00 46:33.66 
        2                                        0.0  0:00.00  0:12.07 
        3                                        0.0  0:00.00  0:00.05 
        4                                        0.0  0:00.00  0:00.02 
        5                                        0.0  0:00.00  0:00.00 
        6                                        0.0  0:00.00  0:00.01 
    3        0     1     1     1 173 409M 15.7M  0.2  4:39.39 34:08.86 ext2fs -A --multiboot-command-line=root=device:hd0 --host-priv-port=1 --device-master-port=2 --
M-exec-server-task=3 -T typed device:hd0
        0                                        0.0  0:00.00  0:00.02 
        1                                        0.0  0:21.78  2:32.67 
        2                                        0.0  0:00.15  0:01.33 
        3                                        0.0  0:00.07  0:01.13 
        4                                        0.0  0:22.09  2:32.56 
        5                                        0.0  0:00.11  0:01.30 
        6                                        0.0  0:21.57  2:32.78 
        7                                        0.2  0:04.10  0:54.37 
        8                                        0.0  0:00.00  0:00.01 
        9                                        0.0  0:20.96  2:30.00 
       10                                        0.0  0:00.09  0:01.05 
       11                                        0.0  0:00.09  0:00.94 
       12                                        0.0  0:21.59  2:32.40 
       13                                        0.0  0:21.50  2:32.02 
       14                                        0.0  0:00.00  0:00.92 
       15                                        0.0  0:00.07  0:00.60 
       16                                        0.0  0:00.09  0:00.86 
       17                                        0.0  0:00.04  0:00.88 
       18                                        0.0  0:00.13  0:00.91 
       19                                        0.0  0:00.04  0:00.91 
       20                                        0.0  0:00.02  0:00.89 
       21                                        0.0  0:00.08  0:00.97 
       22                                        0.0  0:00.05  0:00.84 
       23                                        0.0  0:00.04  0:00.86 
       24                                        0.0  0:00.09  0:00.86 
       25                                        0.0  0:00.11  0:00.88 
       26                                        0.0  0:00.04  0:00.64 
       27                                        0.0  0:21.10  2:32.22 
       28                                        0.0  0:20.32  2:29.92 
       29                                        0.0  0:20.58  2:31.51 
       30                                        0.0  0:20.50  2:32.72 
       31                                        0.0  0:21.05  2:30.05 
       32                                        0.0  0:19.78  2:33.40 
       33                                        0.0  0:20.55  2:31.88 
       34                                        0.0  0:00.00  0:00.06 
       35                                        0.0  0:00.00  0:00.07 
       36                                        0.0  0:00.00  0:00.02 
       37                                        0.0  0:00.01  0:00.05 
       38                                        0.0  0:00.00  0:00.03 
       39                                        0.0  0:00.00  0:00.02 
       40                                        0.0  0:00.00  0:00.06 
       41                                        0.0  0:00.02  0:00.02 
       42                                        0.0  0:00.00  0:00.03 
       43                                        0.0  0:00.00  0:00.05 
       44                                        0.0  0:00.00  0:00.07 
       45                                        0.0  0:00.00  0:00.02 
       46                                        0.0  0:00.00  0:00.02 
       47                                        0.0  0:00.00  0:00.04 
       48                                        0.0  0:00.00  0:00.03 
       49                                        0.0  0:00.00  0:00.03 
       50                                        0.0  0:00.00  0:00.05 
       51                                        0.0  0:00.00  0:00.05 
       52                                        0.0  0:00.00  0:00.04 
       53                                        0.0  0:00.00  0:00.04 
       54                                        0.0  0:00.00  0:00.02 
       55                                        0.0  0:00.00  0:00.03 
       56                                        0.0  0:00.01  0:00.01 
       57                                        0.0  0:00.03  0:00.01 
       58                                        0.0  0:00.01  0:00.00 
       59                                        0.0  0:00.00  0:00.00 
       60                                        0.0  0:00.00  0:00.00 
       61                                        0.0  0:00.00  0:00.03 
       62                                        0.0  0:00.00  0:00.00 
       63                                        0.0  0:00.00  0:00.08 
       64                                        0.0  0:00.00  0:00.06 
       65                                        0.0  0:00.01  0:00.00 
       66                                        0.0  0:00.00  0:00.07 
       67                                        0.0  0:00.00  0:00.01 
       68                                        0.0  0:00.02  0:00.02 
       69                                        0.0  0:00.01  0:00.02 
       70                                        0.0  0:00.01  0:00.01 
       71                                        0.0  0:00.01  0:00.04 
       72                                        0.0  0:00.00  0:00.01 
       73                                        0.0  0:00.01  0:00.00 
       74                                        0.0  0:00.00  0:00.06 
       75                                        0.0  0:00.00  0:00.04 
       76                                        0.0  0:00.02  0:00.05 
       77                                        0.0  0:00.00  0:00.03 
       78                                        0.0  0:00.00  0:00.02 
       79                                        0.0  0:00.00  0:00.05 
       80                                        0.0  0:00.01  0:00.00 
       81                                        0.0  0:00.00  0:00.02 
       82                                        0.0  0:00.00  0:00.03 
       83                                        0.0  0:00.00  0:00.00 
       84                                        0.0  0:00.00  0:00.00 
       85                                        0.0  0:00.00  0:00.04 
       86                                        0.0  0:00.00  0:00.04 
       87                                        0.0  0:00.00  0:00.02 
       88                                        0.0  0:00.01  0:00.00 
       89                                        0.0  0:00.00  0:00.04 
       90                                        0.0  0:00.00  0:00.04 
       91                                        0.0  0:00.00  0:00.05 
       92                                        0.0  0:00.00  0:00.02 
       93                                        0.0  0:00.00  0:00.03 
       94                                        0.0  0:00.00  0:00.02 
       95                                        0.0  0:00.00  0:00.01 
       96                                        0.0  0:00.00  0:00.02 
       97                                        0.0  0:00.00  0:00.03 
       98                                        0.0  0:00.00  0:00.05 
       99                                        0.0  0:00.00  0:00.04 
      100                                        0.0  0:00.00  0:00.03 
      101                                        0.0  0:00.00  0:00.01 
      102                                        0.0  0:00.00  0:00.01 
      103                                        0.0  0:00.00  0:00.05 
      104                                        0.0  0:00.00  0:00.06 
      105                                        0.0  0:00.01  0:00.04 
      106                                        0.0  0:00.00  0:00.00 
      107                                        0.0  0:00.01  0:00.02 
      108                                        0.0  0:00.00  0:00.00 
      109                                        0.0  0:00.00  0:00.02 
      110                                        0.0  0:00.00  0:00.01 
      111                                        0.0  0:00.00  0:00.02 
      112                                        0.0  0:00.01  0:00.04 
      113                                        0.0  0:00.01  0:00.01 
      114                                        0.0  0:00.00  0:00.02 
      115                                        0.0  0:00.01  0:00.02 
      116                                        0.0  0:00.01  0:00.03 
      117                                        0.0  0:00.00  0:00.03 
      118                                        0.0  0:00.01  0:00.01 
      119                                        0.0  0:00.00  0:00.01 
      120                                        0.0  0:00.00  0:00.05 
      121                                        0.0  0:00.00  0:00.02 
      122                                        0.0  0:00.00  0:00.02 
      123                                        0.0  0:00.00  0:00.04 
      124                                        0.0  0:00.00  0:00.04 
      125                                        0.0  0:00.00  0:00.02 
      126                                        0.0  0:00.00  0:00.02 
      127                                        0.0  0:00.01  0:00.01 
      128                                        0.0  0:00.00  0:00.01 
      129                                        0.0  0:00.01  0:00.03 
      130                                        0.0  0:00.01  0:00.05 
      131                                        0.0  0:00.00  0:00.02 
      132                                        0.0  0:00.00  0:00.03 
      133                                        0.0  0:00.00  0:00.03 
      134                                        0.0  0:00.00  0:00.02 
      135                                        0.0  0:00.00  0:00.00 
      136                                        0.0  0:00.00  0:00.01 
      137                                        0.0  0:00.01  0:00.03 
      138                                        0.0  0:00.00  0:00.03 
      139                                        0.0  0:00.00  0:00.02 
      140                                        0.0  0:00.01  0:00.01 
      141                                        0.0  0:00.01  0:00.02 
      142                                        0.0  0:00.00  0:00.00 
      143                                        0.0  0:00.00  0:00.02 
      144                                        0.0  0:00.01  0:00.00 
      145                                        0.0  0:00.00  0:00.01 
      146                                        0.0  0:00.00  0:00.00 
      147                                        0.0  0:00.00  0:00.00 
      148                                        0.0  0:00.00  0:00.03 
      149                                        0.0  0:00.00  0:00.00 
      150                                        0.0  0:00.00  0:00.01 
      151                                        0.0  0:00.00  0:00.00 
      152                                        0.0  0:00.00  0:00.01 
      153                                        0.0  0:00.00  0:00.00 
      154                                        0.0  0:00.00  0:00.00 
      155                                        0.0  0:00.00  0:00.00 
      156                                        0.0  0:00.00  0:00.00 
      157                                        0.0  0:00.00  0:00.01 
      158                                        0.0  0:00.00  0:00.00 
      159                                        0.0  0:00.00  0:00.01 
      160                                        0.0  0:00.00  0:00.01 
      161                                        0.0  0:00.00  0:00.00 
      162                                        0.0  0:00.00  0:00.00 
      163                                        0.0  0:00.00  0:00.00 
      164                                        0.0  0:00.00  0:00.01 
      165                                        0.0  0:00.00  0:00.00 
      166                                        0.0  0:00.00  0:00.00 
      167                                        0.0  0:00.00  0:00.00 
      168                                        0.0  0:00.00  0:00.00 
      169                                        0.0  0:00.00  0:00.00 
      170                                        0.0  0:00.00  0:00.00 
      171                                        0.0  0:00.00  0:00.00 
      172                                        0.0  0:00.00  0:00.00 
    4        0     3     1     1  6  131M 1.32M  0.0  0:02.20  0:26.26 /hurd/exec
        0                                        0.0  0:00.43  0:05.32 
        1                                        0.0  0:00.41  0:05.54 
        2                                        0.0  0:00.44  0:05.38 
        3                                        0.0  0:00.00  0:00.00 
        4                                        0.0  0:00.45  0:05.05 
        5                                        0.0  0:00.44  0:04.95 
    5        0     1     1     1  6  130M  580K  0.0  0:01.17  0:14.92 /hurd/auth
        0                                        0.0  0:00.20  0:02.99 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.24  0:03.03 
        3                                        0.0  0:00.18  0:02.86 
        4                                        0.0  0:00.22  0:03.01 
        5                                        0.0  0:00.31  0:03.01 
    6        0     1     6     6  2  147M 1.09M  0.0  0:00.01  0:00.13 /bin/bash /libexec/runsystem root=device:hd0
        0                                        0.0  0:00.01  0:00.13 
        1                                        0.0  0:00.00  0:00.00 
    7        0     3     1     1  7  130M  880K  0.1  0:00.35  0:10.10 /hurd/term /dev/console device console
        0                                        0.0  0:00.07  0:01.15 
        1                                        0.0  0:00.00  0:00.01 
        2                                        0.0  0:00.14  0:03.10 
        3                                        0.1  0:00.10  0:01.87 
        4                                        0.0  0:00.01  0:00.50 
        5                                        0.0  0:00.00  0:01.54 
        6                                        0.0  0:00.02  0:01.91 
    9        0     3     1     1 19  131M 1.13M  0.0  0:05.41  1:17.29 /hurd/pflocal
        0                                        0.0  0:00.06  0:00.48 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.05  0:00.48 
        3                                        0.0  0:00.78  0:09.10 
        4                                        0.0  0:00.49  0:06.13 
        5                                        0.0  0:00.56  0:07.07 
        6                                        0.0  0:00.30  0:03.41 
        7                                        0.0  0:00.47  0:05.58 
        8                                        0.0  0:00.27  0:06.00 
        9                                        0.0  0:00.04  0:00.47 
       10                                        0.0  0:00.43  0:06.17 
       11                                        0.0  0:00.70  0:09.21 
       12                                        0.0  0:00.00  0:00.04 
       13                                        0.0  0:00.59  0:10.75 
       14                                        0.0  0:00.14  0:01.86 
       15                                        0.0  0:00.04  0:01.49 
       16                                        0.0  0:00.02  0:00.76 
       17                                        0.0  0:00.22  0:05.59 
       18                                        0.0  0:00.16  0:02.62 
   12        0     1    12    12  6  129M  1.2M  0.0  0:00.00  0:00.06 /hurd/mach-defpager
        0                                        0.0  0:00.00  0:00.06 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.00 
        4                                        0.0  0:00.00  0:00.00 
        5                                        0.0  0:00.00  0:00.00 
   14        0     3     1     1  3  131M  504K  0.0  0:00.00  0:00.05 /hurd/storeio hd1
        0                                        0.0  0:00.00  0:00.05 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
   18        0     3     1     1  3  131M  512K  0.0  0:00.39  0:06.71 /hurd/storeio hd0
        0                                        0.0  0:00.13  0:01.66 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.25  0:05.04 
   19        0     3     1     1  3  131M  656K  0.0  0:00.27  0:04.89 /hurd/storeio hd2
        0                                        0.0  0:00.10  0:01.48 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.16  0:03.41 
   21        0     3     1     1  4  130M  648K  0.0  0:00.55  0:06.94 /hurd/null
        0                                        0.0  0:00.24  0:02.09 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.08  0:02.16 
        3                                        0.0  0:00.22  0:02.68 
   22        0     3     1     1  4  130M  820K  0.0  0:00.00  0:00.05 /hurd/procfs
        0                                        0.0  0:00.00  0:00.04 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.00 
   71        1     1    71    71  2  146M  728K  0.0  0:00.00  0:00.03 /usr/sbin/atd
        0                                        0.0  0:00.00  0:00.02 
        1                                        0.0  0:00.00  0:00.00 
   77        0     3     1     1  4  130M  896K  0.0  0:00.00  0:00.02 /hurd/streamio kmsg
        0                                        0.0  0:00.00  0:00.02 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.00 
  117        0     1   117   117  2  146M 1.02M  0.0  0:00.00  0:00.04 /usr/sbin/cron
        0                                        0.0  0:00.00  0:00.04 
        1                                        0.0  0:00.00  0:00.00 
  122      101     1   122   122  2 7.75M 1.07M  0.0  0:00.00  0:00.05 /usr/bin/dbus-daemon --system
        0                                        0.0  0:00.00  0:00.05 
        1                                        0.0  0:00.00  0:00.00 
  128        0     3     1     1  4  130M  908K  0.0  0:00.00  0:00.02 /hurd/fifo
        0                                        0.0  0:00.00  0:00.02 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.00 
  131        8     1     6     6  2  147M  880K  0.0  0:00.01  0:00.07 /usr/sbin/nullmailer-send -d
        0                                        0.0  0:00.01  0:00.07 
        1                                        0.0  0:00.00  0:00.00 
  139        0     3     1     1 19  133M 2.19M  0.3  0:18.66  1:17.98 /hurd/pfinet -i eth0 -a 192.168.10.63 -g 192.168.10.1 -m 255.255.255.0
        0                                        0.0  0:00.01  0:00.03 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.1  0:12.72  0:14.56 
        3                                        0.2  0:01.65  0:12.23 
        4                                        0.0  0:01.67  0:18.56 
        5                                        0.0  0:00.50  0:05.93 
        6                                        0.0  0:00.40  0:06.16 
        7                                        0.0  0:00.57  0:05.95 
        8                                        0.0  0:00.30  0:04.15 
        9                                        0.0  0:00.15  0:01.92 
       10                                        0.0  0:00.13  0:01.45 
       11                                        0.0  0:00.14  0:01.47 
       12                                        0.0  0:00.07  0:01.06 
       13                                        0.0  0:00.08  0:01.23 
       14                                        0.0  0:00.08  0:00.92 
       15                                        0.0  0:00.03  0:00.63 
       16                                        0.0  0:00.03  0:00.45 
       17                                        0.0  0:00.05  0:00.72 
       18                                        0.0  0:00.03  0:00.49 
  140        0     3     1     1  3  131M 1.16M  0.0  0:00.00  0:00.05 /hurd/storeio --no-cache time
        0                                        0.0  0:00.00  0:00.05 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
  142        0     1   142   142  2 10.5M 1.23M  0.0  0:00.00  0:00.05 /usr/sbin/sshd
        0                                        0.0  0:00.00  0:00.05 
        1                                        0.0  0:00.00  0:00.00 
  157        0     3     1     1  6  130M    1M  0.0  0:00.02  0:00.01 /hurd/term /dev/tty1 hurdio /dev/vcs/1/console
        0                                        0.0  0:00.00  0:00.00 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.00 
        4                                        0.0  0:00.00  0:00.01 
        5                                        0.0  0:00.01  0:00.00 
  158        0     6   158   158  2  146M  824K  0.0  0:00.00  0:00.01 /libexec/runttys
        0                                        0.0  0:00.00  0:00.01 
        1                                        0.0  0:00.00  0:00.00 
  159        0     3     1     1 15  133M 1.67M  0.0  0:00.01  0:00.06 /hurd/console
        0                                        0.0  0:00.01  0:00.02 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.00 
        4                                        0.0  0:00.00  0:00.01 
        5                                        0.0  0:00.00  0:00.00 
        6                                        0.0  0:00.00  0:00.00 
        7                                        0.0  0:00.00  0:00.02 
        8                                        0.0  0:00.00  0:00.00 
        9                                        0.0  0:00.00  0:00.00 
       10                                        0.0  0:00.00  0:00.00 
       11                                        0.0  0:00.00  0:00.00 
       12                                        0.0  0:00.00  0:00.01 
       13                                        0.0  0:00.00  0:00.00 
       14                                        0.0  0:00.00  0:00.00 
  160        -   158   160   160  2  147M 1.82M  0.0  0:00.02  0:00.16 -login prompt (bash)
        0                                        0.0  0:00.02  0:00.14 
        1                                        0.0  0:00.00  0:00.02 
  161        -   158   161   161  2  147M 1.78M  0.0  0:00.00  0:00.07 -login prompt (bash)
        0                                        0.0  0:00.00  0:00.07 
        1                                        0.0  0:00.00  0:00.00 
  162        -   158   162   162  2  147M 1.78M  0.0  0:00.01  0:00.07 -login prompt (bash)
        0                                        0.0  0:00.01  0:00.07 
        1                                        0.0  0:00.00  0:00.00 
  163        -   158   163   163  2  147M 1.78M  0.0  0:00.00  0:00.03 -login prompt (bash)
        0                                        0.0  0:00.00  0:00.03 
        1                                        0.0  0:00.00  0:00.00 
  164        -   158   164   164  2  147M 1.78M  0.0  0:00.02  0:00.03 -login prompt (bash)
        0                                        0.0  0:00.02  0:00.03 
        1                                        0.0  0:00.00  0:00.00 
  165        -   158   165   165  2  147M 1.78M  0.0  0:00.00  0:00.08 -login prompt (bash)
        0                                        0.0  0:00.00  0:00.08 
        1                                        0.0  0:00.00  0:00.00 
  166        -   158   166   166  2  147M 1.78M  0.0  0:00.01  0:00.01 -login prompt (bash)
        0                                        0.0  0:00.01  0:00.01 
        1                                        0.0  0:00.00  0:00.00 
  167        0     3     1     1  6  130M 1016K  0.0  0:00.01  0:00.11 /hurd/term /dev/tty2 hurdio /dev/vcs/2/console
        0                                        0.0  0:00.01  0:00.06 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.01 
        4                                        0.0  0:00.00  0:00.03 
        5                                        0.0  0:00.00  0:00.00 
  168        0     3     1     1  6  130M 1016K  0.0  0:00.00  0:00.04 /hurd/term /dev/tty3 hurdio /dev/vcs/3/console
        0                                        0.0  0:00.00  0:00.02 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.01 
        4                                        0.0  0:00.00  0:00.00 
        5                                        0.0  0:00.00  0:00.01 
  169        0     3     1     1  6  130M 1016K  0.0  0:00.00  0:00.04 /hurd/term /dev/tty5 hurdio /dev/vcs/5/console
        0                                        0.0  0:00.00  0:00.00 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.00 
        4                                        0.0  0:00.00  0:00.04 
        5                                        0.0  0:00.00  0:00.00 
  170        0     3     1     1  6  130M 1016K  0.0  0:00.00  0:00.05 /hurd/term /dev/tty4 hurdio /dev/vcs/4/console
        0                                        0.0  0:00.00  0:00.04 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.00 
        4                                        0.0  0:00.00  0:00.01 
        5                                        0.0  0:00.00  0:00.00 
  171        0     3     1     1  6  130M 1016K  0.0  0:00.00  0:00.01 /hurd/term /dev/tty6 hurdio /dev/vcs/6/console
        0                                        0.0  0:00.00  0:00.01 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.00 
        4                                        0.0  0:00.00  0:00.00 
        5                                        0.0  0:00.00  0:00.00 
  172        0     3     1     1  4  130M  892K  0.0  0:00.00  0:00.01 /hurd/password
        0                                        0.0  0:00.00  0:00.01 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
        3                                        0.0  0:00.00  0:00.00 
  173        0   142   173   173  3 10.7M 3.09M  0.0  0:02.09  0:12.63 /usr/sbin/sshd -R
        0                                        0.0  0:02.09  0:12.63 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
  174        0     3     1     1 632 2.99G 27.6M 100.3 16:43.18 52:54.41 /hurd/ext2fs /dev/hd2
        0                                        0.0  0:00.01  0:00.03 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  1:34.24  6:26.66 
        3                                        0.0  0:00.04  0:00.31 
        4                                        0.0  0:00.13  0:00.47 
        5                                        0.0  0:00.05  0:00.57 
        6                                        0.0  1:36.91  6:26.41 
        7                                        0.0  0:12.98  0:34.83 
        8                                        0.0  1:37.85  6:26.20 
        9                                        0.0  1:35.07  6:17.07 
       10                                        0.0  0:00.05  0:00.50 
       11                                        0.0  0:00.04  0:00.48 
       12                                        0.0  0:00.07  0:00.55 
       13                                        0.0  0:00.03  0:00.46 
       14                                        0.0  0:00.03  0:00.42 
       15                                        0.0  0:00.06  0:00.32 
       16                                        0.0  0:00.05  0:00.56 
       17                                        0.0  0:00.05  0:00.50 
       18                                        0.0  0:00.05  0:00.48 
       19                                        0.0  0:00.03  0:00.37 
       20                                        0.0  0:00.08  0:00.48 
       21                                        0.0  0:00.01  0:00.52 
       22                                        0.0  0:00.02  0:00.44 
       23                                        0.0  0:00.02  0:00.44 
       24                                        0.0  0:00.03  0:00.31 
       25                                        0.0  0:00.05  0:00.32 
       26                                        0.0  0:00.04  0:00.37 
       27                                        0.0  0:00.00  0:00.31 
       28                                        0.0  0:00.03  0:00.23 
       29                                        0.0  0:00.05  0:00.33 
       30                                        0.0  0:00.04  0:00.31 
       31                                        0.0  0:00.01  0:00.29 
       32                                        0.0  0:00.07  0:00.27 
       33                                        0.0  0:00.05  0:00.28 
       34                                        0.0  0:00.04  0:00.23 
       35                                        0.0  0:00.04  0:00.46 
       36                                        0.0  0:00.02  0:00.31 
       37                                        0.0  0:00.02  0:00.38 
       38                                        0.0  0:00.06  0:00.29 
       39                                        0.0  0:00.03  0:00.22 
       40                                        0.0  0:00.02  0:00.28 
       41                                        0.0  0:00.03  0:00.26 
       42                                        0.0  0:00.05  0:00.39 
       43                                        0.0  0:00.06  0:00.37 
       44                                        0.0  0:00.03  0:00.36 
       45                                        0.0  0:00.04  0:00.20 
       46                                        0.0  0:00.02  0:00.28 
       47                                        0.0  0:00.01  0:00.29 
       48                                        0.0  0:00.03  0:00.23 
       49                                        0.0  0:00.04  0:00.22 
       50                                        0.0  0:00.07  0:00.25 
       51                                        0.0  0:00.00  0:00.33 
       52                                        0.0  0:00.05  0:00.49 
       53                                        0.0  0:00.02  0:00.31 
       54                                        0.0  0:00.00  0:00.27 
       55                                        0.0  0:00.06  0:00.25 
       56                                        0.0  0:00.05  0:00.35 
       57                                        0.0  0:00.01  0:00.28 
       58                                        0.0  0:00.06  0:00.25 
       59                                        0.0  0:00.05  0:00.30 
       60                                        0.0  0:00.03  0:00.36 
       61                                        0.0  0:00.04  0:00.31 
       62                                        0.0  0:00.05  0:00.18 
       63                                        0.0  0:00.02  0:00.31 
       64                                        0.0  0:00.00  0:00.27 
       65                                        0.0  0:00.02  0:00.26 
       66                                        0.0  0:00.00  0:00.31 
       67                                        0.0  0:00.00  0:00.15 
       68                                        0.0  0:00.04  0:00.32 
       69                                        0.0  0:00.04  0:00.21 
       70                                        0.0  0:00.01  0:00.31 
       71                                        0.0  0:00.05  0:00.22 
       72                                        0.0  0:00.01  0:00.28 
       73                                        0.0  0:00.04  0:00.31 
       74                                        0.0  0:00.06  0:00.20 
       75                                        0.0  0:00.04  0:00.38 
       76                                        0.0  0:00.03  0:00.37 
       77                                        0.0  0:00.06  0:00.32 
       78                                        0.0  0:00.04  0:00.22 
       79                                        0.0  0:00.04  0:00.25 
       80                                        0.0  0:00.04  0:00.29 
       81                                        0.0  0:00.07  0:00.31 
       82                                        0.0  0:00.04  0:00.27 
       83                                        0.0  0:00.04  0:00.23 
       84                                        0.0  0:00.02  0:00.37 
       85                                        0.0  0:00.03  0:00.24 
       86                                        0.0  0:00.01  0:00.29 
       87                                        0.0  0:00.03  0:00.24 
       88                                        0.0  0:00.01  0:00.31 
       89                                        0.0  0:00.03  0:00.39 
       90                                        0.0  0:00.00  0:00.30 
       91                                        0.0  0:00.03  0:00.32 
       92                                        0.0  0:00.00  0:00.24 
       93                                        0.0  0:00.03  0:00.32 
       94                                        0.0  0:00.04  0:00.30 
       95                                        0.0  0:00.00  0:00.33 
       96                                        0.0  0:00.02  0:00.24 
       97                                        0.0  0:00.01  0:00.26 
       98                                        0.0  0:00.04  0:00.33 
       99                                        0.0  0:00.03  0:00.26 
      100                                        0.0  0:00.05  0:00.29 
      101                                        0.0  0:00.05  0:00.34 
      102                                        0.0  0:00.04  0:00.38 
      103                                        0.0  0:00.00  0:00.22 
      104                                        0.0  0:00.03  0:00.38 
      105                                        0.0  0:00.01  0:00.43 
      106                                        0.0  0:00.03  0:00.37 
      107                                        0.0  0:00.05  0:00.31 
      108                                        0.0  0:00.02  0:00.31 
      109                                        0.0  0:00.00  0:00.26 
      110                                        0.0  0:00.03  0:00.27 
      111                                        0.0  0:00.03  0:00.25 
      112                                        0.0  0:00.02  0:00.30 
      113                                        0.0  0:00.05  0:00.23 
      114                                        0.0  0:00.02  0:00.32 
      115                                        0.0  0:00.02  0:00.29 
      116                                        0.0  0:00.04  0:00.22 
      117                                        0.0  0:00.04  0:00.26 
      118                                        0.0  0:00.02  0:00.36 
      119                                        0.0  0:00.03  0:00.31 
      120                                        0.0  0:00.04  0:00.26 
      121                                        0.0  0:00.05  0:00.28 
      122                                        0.0  0:00.01  0:00.27 
      123                                        0.0  0:00.03  0:00.34 
      124                                        0.0  0:00.03  0:00.36 
      125                                        0.0  0:00.02  0:00.33 
      126                                        0.0  0:00.04  0:00.36 
      127                                        0.0  0:00.00  0:00.41 
      128                                        0.0  0:00.02  0:00.33 
      129                                        0.0  0:00.07  0:00.32 
      130                                        0.0  0:00.03  0:00.29 
      131                                        0.0  0:00.00  0:00.34 
      132                                        0.0  0:00.04  0:00.28 
      133                                        0.0  0:00.04  0:00.24 
      134                                        0.0  0:00.03  0:00.35 
      135                                        0.0  0:00.04  0:00.38 
      136                                        0.0  0:00.04  0:00.37 
      137                                        0.0  0:00.04  0:00.26 
      138                                        0.0  0:00.00  0:00.26 
      139                                        0.0  0:00.06  0:00.40 
      140                                        0.0  1:23.58  6:28.86 
      141                                        0.0  0:25.74  1:55.97 
      142                                        0.0  0:00.00  0:00.00 
      143                                        0.0  0:00.00  0:00.00 
      144                                        0.0  0:00.00  0:00.00 
      145                                        0.0  0:00.00  0:00.00 
      146                                        0.0  0:00.00  0:00.00 
      147                                        0.0  0:00.00  0:00.00 
      148                                        0.0  0:00.00  0:00.00 
      149                                        0.0  0:00.00  0:00.00 
      150                                        0.0  0:00.00  0:00.00 
      151                                        0.0  0:00.00  0:00.00 
      152                                        0.0  0:00.00  0:00.00 
      153                                        0.0  0:00.00  0:00.00 
      154                                        0.0  0:00.00  0:00.00 
      155                                        0.0  0:00.00  0:00.00 
      156                                        0.0  0:00.00  0:00.00 
      157                                        0.0  0:00.00  0:00.00 
      158                                        0.0  0:00.00  0:00.00 
      159                                        0.0  0:00.00  0:00.00 
      160                                        0.0  0:00.00  0:00.00 
      161                                        0.0  0:00.00  0:00.00 
      162                                        0.0  0:00.00  0:00.00 
      163                                        0.0  0:00.00  0:00.00 
      164                                        0.0  0:00.00  0:00.00 
      165                                        0.0  0:00.00  0:00.00 
      166                                        0.0  0:00.00  0:00.00 
      167                                        0.0  0:00.00  0:00.00 
      168                                        0.0  0:00.00  0:00.00 
      169                                        0.0  0:00.00  0:00.00 
      170                                        0.0  0:00.00  0:00.00 
      171                                        0.0  0:00.00  0:00.00 
      172                                        0.0  0:00.00  0:00.00 
      173                                        0.0  0:00.00  0:00.00 
      174                                        0.0  0:00.00  0:00.00 
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      179                                        0.0  0:00.00  0:00.00 
      180                                        0.0  0:00.00  0:00.00 
      181                                        0.0  0:00.00  0:00.00 
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      184                                        0.0  0:00.00  0:00.00 
      185                                        0.0  0:00.00  0:00.00 
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      188                                        0.0  0:00.00  0:00.00 
      189                                        0.0  0:00.00  0:00.00 
      190                                        0.0  0:00.00  0:00.00 
      191                                        0.0  0:00.00  0:00.00 
      192                                        0.0  0:00.00  0:00.00 
      193                                        0.0  0:00.00  0:00.00 
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      196                                        0.0  0:00.00  0:00.00 
      197                                        0.0  0:00.00  0:00.00 
      198                                        0.0  0:00.00  0:00.00 
      199                                        0.0  0:00.00  0:00.00 
      200                                        0.0  0:00.00  0:00.00 
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      202                                        0.0  0:00.00  0:00.00 
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      205                                        0.0  0:00.00  0:00.00 
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      215                                        0.0  0:00.00  0:00.00 
      216                                        0.0  0:00.00  0:00.00 
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      218                                        0.0  0:00.00  0:00.00 
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      220                                        0.0  0:00.00  0:00.00 
      221                                        0.0  0:00.00  0:00.00 
      222                                        0.0  0:00.00  0:00.00 
      223                                        0.0  0:00.00  0:00.00 
      224                                        0.0  0:00.00  0:00.00 
      225                                        0.0  0:00.00  0:00.00 
      226                                        0.0  0:00.00  0:00.00 
      227                                        0.0  0:00.00  0:00.00 
      228                                        0.0  0:00.00  0:00.00 
      229                                        0.0  0:00.00  0:00.00 
      230                                        0.0  0:00.00  0:00.00 
      231                                        0.0  0:00.00  0:00.00 
      232                                        0.0  0:00.00  0:00.00 
      233                                        0.0  0:00.00  0:00.00 
      234                                        0.0  0:00.00  0:00.00 
      235                                        0.0  0:00.00  0:00.00 
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      625                                        0.0  0:00.00  0:00.00 
      626                                        0.0  0:00.00  0:00.00 
      627                                        0.0  0:00.00  0:00.00 
      628                                        0.0  0:00.00  0:00.00 
      629                                        0.0  0:00.00  0:00.00 
      630                                        0.0  0:00.00  0:00.00 
      631                                       100.3 8:11.86 17:35.07 
  175        0     3     1     1  6  130M 1.08M  0.0  0:03.06  0:33.84 /hurd/term /dev/ptyp0 pty-master /dev/ttyp0
        0                                        0.0  0:00.80  0:07.55 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.56  0:05.97 
        3                                        0.0  0:00.50  0:06.99 
        4                                        0.0  0:00.56  0:06.99 
        5                                        0.0  0:00.62  0:06.32 
  176     1000   173   176   176  2  148M 2.19M  0.0  0:00.08  0:00.54 -bash
        0                                        0.0  0:00.08  0:00.47 
        1                                        0.0  0:00.00  0:00.07 
  284     1000     1   284   284  2 20.5M  700K  0.0  0:00.00  0:00.00 ssh-agent
        0                                        0.0  0:00.00  0:00.00 
        1                                        0.0  0:00.00  0:00.00 
  302     1000   176   302   176  3  148M 1.37M  0.0  0:00.03  0:00.14 screen -S S_main
        0                                        0.0  0:00.02  0:00.07 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.01  0:00.06 
  304     1000   302   304   304  3  148M 2.45M  0.0  0:02.86  0:13.03 SCREEN -S S_main
        0                                        0.0  0:02.86  0:12.97 
        1                                        0.0  0:00.00  0:00.03 
        2                                        0.0  0:00.00  0:00.02 
  305     1000     3     1     1  5  130M  960K  0.0  0:01.57  0:15.62 /hurd/fifo
        0                                        0.0  0:00.31  0:04.04 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.31  0:03.95 
        3                                        0.0  0:00.45  0:03.78 
        4                                        0.0  0:00.49  0:03.84 
  306        0     3     1     1  5  130M 1.02M  0.0  0:01.42  0:16.72 /hurd/term /dev/ptyp1 pty-master /dev/ttyp1
        0                                        0.0  0:00.43  0:06.13 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.40  0:04.77 
        3                                        0.0  0:00.00  0:00.14 
        4                                        0.0  0:00.59  0:05.67 
  309     1000   304   309   309  2  148M 2.12M  0.0  0:00.02  0:00.09 /bin/bash
        0                                        0.0  0:00.02  0:00.09 
        1                                        0.0  0:00.00  0:00.00 
  319     1000   309   319   309  2  153M 7.29M  0.0  0:00.33  0:00.74 emacs
        0                                        0.0  0:00.33  0:00.74 
        1                                        0.0  0:00.00  0:00.00 
  320        0     3     1     1  6  130M 1.48M  0.0  0:03.25  0:38.79 /hurd/term /dev/ptyp2 pty-master /dev/ttyp2
        0                                        0.0  0:00.60  0:07.07 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.69  0:08.43 
        3                                        0.0  0:00.78  0:07.78 
        4                                        0.0  0:00.55  0:07.98 
        5                                        0.0  0:00.60  0:07.52 
  323     1000   304   323   323  2  148M 2.19M  0.0  0:00.12  0:00.60 /bin/bash
        0                                        0.0  0:00.12  0:00.54 
        1                                        0.0  0:00.00  0:00.06 
  411        0     3     1     1  5  130M 1.02M  0.0  0:01.17  0:16.40 /hurd/term /dev/ptyp3 pty-master /dev/ttyp3
        0                                        0.0  0:00.42  0:03.74 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.15  0:02.70 
        3                                        0.0  0:00.24  0:05.48 
        4                                        0.0  0:00.33  0:04.45 
  414     1000   304   414   414  2  148M 2.13M  0.0  0:00.05  0:00.23 /bin/bash
        0                                        0.0  0:00.04  0:00.21 
        1                                        0.0  0:00.00  0:00.02 
  425        0     3     1     1  3  130M  872K  0.0  0:00.02  0:00.05 /hurd/proxy-defpager
        0                                        0.0  0:00.02  0:00.04 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.01 
 3087        0     3     1     1  5  130M 1.02M  0.0  0:00.23  0:01.39 /hurd/term /dev/ptyp4 pty-master /dev/ttyp4
        0                                        0.0  0:00.05  0:00.39 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.07  0:00.43 
        3                                        0.0  0:00.07  0:00.31 
        4                                        0.0  0:00.04  0:00.26 
 3648        0     3     1     1  3  130M  876K  0.0  0:00.00  0:00.05 /hurd/crash --kill
        0                                        0.0  0:00.00  0:00.05 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
 5512        0     3     1     1  5  130M 1.01M  0.0  0:00.05  0:00.70 /hurd/term /dev/ptyp5 pty-master /dev/ttyp5
        0                                        0.0  0:00.00  0:00.26 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.03  0:00.16 
        3                                        0.0  0:00.02  0:00.14 
        4                                        0.0  0:00.00  0:00.14 
10286     1000   323 10286   323  2  135M 1.28M  0.0  0:00.06  0:00.20 make
        0                                        0.0  0:00.06  0:00.20 
        1                                        0.0  0:00.00  0:00.00 
10287     1000   323 10286   323  2  147M  884K  0.0  0:00.00  0:00.33 tee standard output L_ LC_PAPER=en_US.utf8 LC_ADDRESS=en_US.utf8 SSH_AGENT_PID=284 LC_MONETARY=
M=en_US.utf8 SP_REPLACE_LINKS=n SHELL=/bin/bash TERM=screen SP_STOP_AFTER=build HISTSIZE=10000 SSH_CLIENT=192.168.10.60 55972 22 LC_NUMERIC=en_US.utf8 OLDPWD=/home/tsch
Mhwinge SSH_TTY=/dev/ttyp0 USER=tschwinge HISTFILESIZE=10000 LD_LIBRARY_PATH= LC_TELEPHONE=en_US.utf8 SP_COMPAT=n LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;
M;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=0
M01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:
M:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35
M5:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=0
M01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm
Mm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.an
Mnx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.
M.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36: SSH_AUTH_SOCK=/home/tschwinge/.ssh/auth_sock.grubber.bddebian.com TERMCAP=SC|screen|VT 100/ANSI X3.64 virtual terminal
Ml:\^K^J:DO=\E[%dB:LE=\E[%dD:RI=\E[%dC:UP=\E[%dA:bs:bt=\E[Z:\^K^J:cd=\E[J:ce=\E[K:cl=\E[H\E[J:cm=\E[%i%d;%dH:ct=\E[3g:\^K^J:do=^J:nd=\E[C:pt:rc=\E8:rs=\Ec:sc=\E7:st=\EH
MH:up=\EM:\^K^J:le=^H:bl=^G:cr=^M:it#8:ho=\E[H:nw=\EE:ta=^I:is=\E)0:\^K^J:li#50:co#166:am:xn:xv:LP:sr=\EM:al=\E[L:AL=\E[%dL:\^K^J:cs=\E[%i%d;%dr:dl=\E[M:DL=\E[%dM:dc=\E
ME[P:DC=\E[%dP:\^K^J:im=\E[4h:ei=\E[4l:mi:IC=\E[%d@:ks=\E[?1h\E=:\^K^J:ke=\E[?1l\E>:vi=\E[?25l:ve=\E[34h\E[?25h:vs=\E[34l:\^K^J:ti=\E[?1049h:te=\E[?1049l:us=\E[4m:ue=\E
ME[24m:so=\E[3m:\^K^J:se=\E[23m:mb=\E[5m:md=\E[1m:mr=\E[7m:me=\E[m:ms:\^K^J:Co#8:pa#64:AF=\E[3%dm:AB=\E[4%dm:op=\E[39;49m:AX:\^K^J:vb=\Eg:G0:as=\E(0:ae=\E(B:\^K^J:ac=\1
M140\140aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~..--++,,hhII00:\^K^J:po=\E[5i:pf=\E[4i:k0=\E[10~:k1=\EOP:k2=\EOQ:k3=\EOR:\^K^J:k4=\EOS:k5=\E[15~:k6=\E[17~:k7=\E
ME[18~:k8=\E[19~:\^K^J:k9=\E[20~:k;=\E[21~:F1=\E[23~:F2=\E[24~:F3=\E[1;2P:\^K^J:F4=\E[1;2Q:F5=\E[1;2R:F6=\E[1;2S:F7=\E[15;2~:\^K^J:F8=\E[17;2~:F9=\E[18;2~:FA=\E[19;2~:k
Mkb=\177:K2=\EOE:\^K^J:kB=\E[Z:kF=\E[1;2B:kR=\E[1;2A:*4=\E[3;2~:*7=\E[1;2F:\^K^J:#2=\E[1;2H:#3=\E[2;2~:#4=\E[1;2D:%c=\E[6;2~:%e=\E[5;2~:\^K^J:%i=\E[1;2C:kh=\E[1~:@1=\E[
M[1~:kH=\E[4~:@7=\E[4~:\^K^J:kN=\E[6~:kP=\E[5~:kI=\E[2~:kD=\E[3~:ku=\EOA:kd=\EOB:\^K^J:kr=\EOC:kl=\EOD:km: have_bash_profile=y SPF_SOURCE_DEBUG=y PATH=/home/tschwinge/c
Mcommand:/home/tschwinge/shared/command:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games MAIL=/var/mail/tschwinge LC_MESSAGES=en_US.utf8 SP_TARDIR=/
M/home/tschwinge/tmp/source/package STY=304.S_main LC_COLLATE=C LC_IDENTIFICATION=en_US.utf8 SP_FOREIGN_DIR=/home/tschwinge/shared.old/package/host/schwinge.homeip.net/
M/sp-foreign-snippets/snippets PWD=/home/tschwinge/tmp/emacs/trunk.build _LD_LIBRARY_PATH= EDITOR=emacsclient  LANG=en_US.utf8 TZ=Europe/Berlin LC_MEASUREMENT=en_US.utf
Mf8 KRB5CCNAME=/tmp/krb5cc.tschwinge HISTCONTROL=ignoreboth HOME=/home/tschwinge SHLVL=2 SPF_COMPAT=n LOGNAME=tschwinge LESS=-M -R CVS_RSH=ssh WINDOW=1 SSH_CONNECTION=1
M192.168.10.60 55972 192.168.10.63 22 LC_CTYPE=en_US.utf8 LESSOPEN=| /usr/bin/lesspipe %s EMAIL=thomas@schwinge.name ALTERNATE_EDITOR=joe LC_TIME=en_US.utf8 LESSCLOSE=/
M/usr/bin/lesspipe %s %s SPF_SOURCE_DATA_DIR=/home/tschwinge/shared.old/source/package/misc/spf LC_NAME=en_US.utf8 _=/usr/bin/tee
        0                                        0.0  0:00.00  0:00.33 
        1                                        0.0  0:00.00  0:00.00 
10377     1000 10286 10286   323  2  146M  828K  0.0  0:00.00  0:00.00 /bin/sh -c boot=bootstrap-emacs;                         \^Kif [ ! -x "src/$boot" ]; then      
M                                \^K    cd src; make all                                    \^K      CC='gcc' CFLAGS='-g' CPPFLAGS='-DXASSERTS=1'         \^K      LDFLA
MAGS='-Wl,-znocombreloc ' MAKE='make' BOOTSTRAPEMACS="$boot"; \^Kfi;
        0                                        0.0  0:00.00  0:00.00 
        1                                        0.0  0:00.00  0:00.00 
10378     1000 10377 10286   323  2  135M 1.65M  0.0  0:00.71  0:02.12 make all CC=gcc CFLAGS=-g CPPFLAGS=-DXASSERTS=1 LDFLAGS=-Wl,-znocombreloc  MAKE=make BOOTSTRAPE
MEMACS=bootstrap-emacs
        0                                        0.0  0:00.71  0:01.92 
        1                                        0.0  0:00.00  0:00.19 
10770     1000 10378 10286   323  2  146M  852K  0.0  0:00.00  0:00.03 /bin/sh -c if test "no" = "yes"; then \^K  ln -f temacs bootstrap-emacs; \^Kelse \^K  `/bin/pwd
Md`/temacs --batch --load loadup bootstrap || exit 1; \^K  mv -f emacs bootstrap-emacs; \^Kfi
        0                                        0.0  0:00.00  0:00.03 
        1                                        0.0  0:00.00  0:00.00 
10772     1000 10770 10286   323  3  180M 38.8M  0.0  1:16.35  0:05.27 /media/data/home/tschwinge/tmp/emacs/trunk.build/src/temacs --batch --load loadup bootstrap
        0                                        0.0  1:16.35  0:05.27 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  0:00.00  0:00.00 
10778     1000   304   304   304  2  148M  396K  0.0  0:00.00  0:00.00 SCREEN -S S_main
        0                                        0.0  0:00.00  0:00.00 
        1                                        0.0  0:00.00  0:00.00 
10784        -   160 10784   160  2  146M  672K  0.0  0:00.00  0:00.01 syncfs -s
        0                                        0.0  0:00.00  0:00.01 
        1                                        0.0  0:00.00  0:00.00 
10785        -   160 10785   160  2  146M  672K  0.0  0:00.00  0:00.02 syncfs -s -c /media/data/
        0                                        0.0  0:00.00  0:00.02 
        1                                        0.0  0:00.00  0:00.00 
10787        0   160 10787   160  2  146M  876K  0.0  0:00.00  0:00.06 ps -Af
        0                                        0.0  0:00.00  0:00.06 
        1                                        0.0  0:00.00  0:00.00 
10795        8   131     6     6  2  147M 1.38M  0.1  0:00.02  0:00.04 /usr/lib/nullmailer/qmqp -d -s mail.schwinge.homeip.net
        0                                        0.1  0:00.02  0:00.04 
        1                                        0.0  0:00.00  0:00.00 
10796        0   160 10796   160  2  146M 1.23M  0.0  0:00.00  0:00.08 ps -F hurd-long -T -M -w -A
        0                                        0.0  0:00.00  0:00.03 
        1                                        0.0  0:00.00  0:00.00 

[4]+  Done                    ps -F hurd-long -T -M -w -A
login> 

TH# 631 of PID 174 (which is indeed ext2fs for /media/data) looks very suspicious, likely together in combination with TH# 1 of PID 2 (GNU Mach), so likely some IPC ping-pong?

  PID TH#  UID  PPID  PGrp  Sess TH  Vmem   RSS %CPU     User   System Args
    0        0     1     1     1 16  132M    1M  0.0  0:04.84  0:54.84 /hurd/proc
[...]
    2        -     1     1     1  7  418M 19.5M  0.0  0:00.00  0:12.16 root=device:hd0
        0                                        0.0  0:00.00  0:00.00 
        1                                       92.6  0:00.00 46:33.66 
        2                                        0.0  0:00.00  0:12.07 
        3                                        0.0  0:00.00  0:00.05 
        4                                        0.0  0:00.00  0:00.02 
        5                                        0.0  0:00.00  0:00.00 
        6                                        0.0  0:00.00  0:00.01 
[...]
  174        0     3     1     1 632 2.99G 27.6M 100.3 16:43.18 52:54.41 /hurd/ext2fs /dev/hd2
        0                                        0.0  0:00.01  0:00.03 
        1                                        0.0  0:00.00  0:00.00 
        2                                        0.0  1:34.24  6:26.66 
        3                                        0.0  0:00.04  0:00.31 
[...]
      630                                        0.0  0:00.00  0:00.00 
      631                                       100.3 8:11.86 17:35.07 
[...]

Attaching GDB hangs. Should have used noninvasive mode...

Having a look again after an hour or two, GNU Mach's thread 1's (system) time count has gone up to nearly 120 minutes, and ext2fs' thread 631's is up to 12 minutes user and 26 minutes system time.

I was able to get another root shell via plain ssh root@grubber, and I'm able to attach GDB in noninvasive mode. Hopefully the first unsuccessful (but still running) GDB didn't cause any interference.

Due to differences in thread numbering of ps and gdb, GDB's thread 632 (which is the last one anyways) should be the offending one. GDB's thread 631 and earlier ones (manually checked down to 600) are sitting in mach_msg_trap.

(gdb) thread apply 632 bt

Thread 632 (Thread 174.632):
#0  0x010e408c in syscall_vm_allocate () at /build/buildd-eglibc_2.11.2-6+b1-hurd-i386-sWVQAp/eglibc-2.11.2/build-tree/hurd-i386-libc/mach/syscall_vm_allocate.S:2
#1  0x010e423a in __vm_allocate (target_task=1, address=0xbfffbde0, size=65536, anywhere=0)
at /build/buildd-eglibc_2.11.2-6+b1-hurd-i386-sWVQAp/eglibc-2.11.2/build-tree/hurd-i386-libc/mach/vm_allocate.c:54
#2  0x010b023a in alloc_stack (p=0x83774a8) at /home/sthibaul-guest/hurd-debian/./libthreads/stack.c:397
#3  0x010ae9b3 in cproc_create () at /home/sthibaul-guest/hurd-debian/./libthreads/cprocs.c:724
#4  0x010afe5a in cthread_fork (func=0x133ff42, arg=0x0) at /home/sthibaul-guest/hurd-debian/./libthreads/cthreads.c:341
#5  0x010b505d in internal_demuxer (inp=0xbfffdf20, outheadp=0xbfffbf10) at /home/sthibaul-guest/hurd-debian/./libports/manage-multithread.c:72
#6  0x010e4dc6 in __mach_msg_server_timeout (demux=0x133ff38, max_size=8192, rcv_name=18, option=2048, timeout=0) at msgserver.c:109
#7  0x010b4eb0 in thread_function (master=0) at /home/sthibaul-guest/hurd-debian/./libports/manage-multithread.c:136
#8  0x010b0058 in cthread_body (self=0x8376c50) at /home/sthibaul-guest/hurd-debian/./libthreads/cthreads.c:300
#9  0x00000000 in ?? ()

(gdb) thread apply 632 bt full

Thread 632 (Thread 174.632):
#0  0x010e408c in syscall_vm_allocate () at /build/buildd-eglibc_2.11.2-6+b1-hurd-i386-sWVQAp/eglibc-2.11.2/build-tree/hurd-i386-libc/mach/syscall_vm_allocate.S:2
No locals.
#1  0x010e423a in __vm_allocate (target_task=1, address=0xbfffbde0, size=65536, anywhere=0)
    at /build/buildd-eglibc_2.11.2-6+b1-hurd-i386-sWVQAp/eglibc-2.11.2/build-tree/hurd-i386-libc/mach/vm_allocate.c:54
        err = <value optimized out>
#2  0x010b023a in alloc_stack (p=0x83774a8) at /home/sthibaul-guest/hurd-debian/./libthreads/stack.c:397
        base = 321454080
#3  0x010ae9b3 in cproc_create () at /home/sthibaul-guest/hurd-debian/./libthreads/cprocs.c:724
        child = 0x83774a8
        n = <value optimized out>
#4  0x010afe5a in cthread_fork (func=0x133ff42, arg=0x0) at /home/sthibaul-guest/hurd-debian/./libthreads/cthreads.c:341
        t = 0x8377430
#5  0x010b505d in internal_demuxer (inp=0xbfffdf20, outheadp=0xbfffbf10) at /home/sthibaul-guest/hurd-debian/./libports/manage-multithread.c:72
        status = <value optimized out>
        pi = 0x0
        link = {thread = 2050, next = 0x0, prevp = 0x2000, notifies = 0x12, interrupted_next = 0x0}
        __PRETTY_FUNCTION__ = "internal_demuxer"
        lock = -1073758644
        nreqthreads = -1073750240
        totalthreads = 137852072
        bucket = 0x10b1c64
        demuxer = 0x10b01eb <alloc_stack+11>
#6  0x010e4dc6 in __mach_msg_server_timeout (demux=0x133ff38, max_size=8192, rcv_name=18, option=2048, timeout=0) at msgserver.c:109
        request = 0xbfffdf20
        reply = 0xbfffbf10
        mr = 3
        __PRETTY_FUNCTION__ = "__mach_msg_server_timeout"
#7  0x010b4eb0 in thread_function (master=0) at /home/sthibaul-guest/hurd-debian/./libports/manage-multithread.c:136
        timeout = 0
        err = <value optimized out>
        hook = 0
        global_timeout = 0
        thread_timeout = 0
        bucket = 0x805f6c0
        lock = 0
        totalthreads = 497
        nreqthreads = 1
#8  0x010b0058 in cthread_body (self=0x8376c50) at /home/sthibaul-guest/hurd-debian/./libthreads/cthreads.c:300
        t = 0x8376bd8
#9  0x00000000 in ?? ()
No symbol table info available.

May this simply be an out-of-memory situation where Mach won't / can't satisfy libports / libthreads demand? (Looks like the latter library is currently creating a new thread.) If yes, should the code be prepared for that? Is it perhaps prepared (I did not yet have a look), and re-tries again and again? Why doesn't Mach page out some pages to make memory available?

This is stock GNU Mach from Git, no patches, configured for Xen domU usage.

Posted 2009-08-18 10:36:14 UTC Tags:

syncfs is a tiny wrapper around the file syncfs RPC.

Its functionality should me merged into GNU coreutils' sync program, see GNU Savannah task #6614.

There is a FOSS Factory bounty (p270) on this task.

Posted 2009-08-18 10:33:11 UTC Tags:

Neither the time executable from the GNU time package work completely correctly, nor does the GNU Bash built-in one.

tschwinge@flubber:~ $ \time sleep 2
0.00user 0.00system 9:38:00elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+0minor)pagefaults 0swaps
tschwinge@flubber:~ $ \time sleep 4
0.00user 0.00system 18:50:25elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+0minor)pagefaults 0swaps
tschwinge@flubber:~ $ \time sleep 6
0.00user 0.00system 28:00:53elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+0minor)pagefaults 0swaps
tschwinge@flubber:~ $ time sleep 2

real    0m2.093s
user    0m0.000s
sys     0m0.011s
tschwinge@flubber:~ $ time sleep 4

real    0m4.083s
user    0m0.000s
sys     0m0.010s
tschwinge@flubber:~ $ time sleep 6

real    0m6.164s
user    0m0.000s
sys     0m0.010s

GNU time's elapsed value is off by some factor.

$ \time factor 1111111111111111111
1111111111111111111: 1111111111111111111
0.00user 0.00system 52:39:24elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+0minor)pagefaults 0swaps
$ time factor 1111111111111111111
1111111111111111111: 1111111111111111111

real    0m11.424s
user    0m0.000s
sys     0m0.010s

As above; also here all the running time should be attriuted to user time. This is probably a open issue gnumach.

2011-09-02

Might want to revisit this, and take Xen into account -- I believe flubber has already been Xenified at that time.

IRC, freenode, #hurd, 2011-09-02

While testing some IPC virtual copy performance issues:

<tschwinge> And I can confirm that with dd if=/dev/zero of=/dev/null bs=4k
  running, a parallel sleep 10 takes about 20 s (on strauss).
Posted 2009-07-07 20:48:47 UTC Tags:

socat needs porting. Some work has already been done in 2007, see http://www.dest-unreach.org/socat/contrib/socat-hurd.html or contact Thomas Schwinge.

Posted 2009-05-19 10:01:42 UTC Tags:
License:

GFDL 1.2+

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.

pth

IRC, unknown channel, unknown date.

<azeem> seems pth still doesn't work
<bddebian> Doesn't build or doesn't work?
<azeem> both
<azeem> some configure test keep grinding the CPU, same for the test suite
<azeem> which apparently runs pth_init() and never returns

<azeem> actually, pth fails to build right now
<azeem> pth_mctx.c:477: error: request for member '__pc' in something not a structure or union

<azeem> I know the pth test suite fails (it locks up the machine) or used to fail, so I guess porting work for pth would be needed
<azeem> < marcusb> from reading the pth/PORTING document, porting libpth shouldn't be too hard...

<youpi> dropped pth [from the channel's topic], as we think we know why it fails (sigaltstack is bogus)
Posted 2009-05-19 10:01:42 UTC Tags:
License:

GFDL 1.2+

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.

Log

December, 2008.

On the otherwise-idle flubber:

$ git clone git://sources.redhat.com/git/glibc.git
Initialized empty Git repository in /media/data/home/tschwinge/tmp/glibc/glibc/.git/
remote: Generating pack...
remote: Done counting 380933 objects.
remote: Deltifying 380933 objects...
remote:  100% (380933/380933) done
remote: Total 380933 (delta 294166), reused 380686 (delta 294002)
Receiving objects: 100% (380933/380933), 70.31 MiB | 27 KiB/s, done.
Resolving deltas: 100% (294166/294166), done.
error: git-checkout-index: unable to create file iconvdata/ibm1122.c (Interrupted system call)
error: git-checkout-index: unable to create file localedata/charmaps/IBM862 (Interrupted system call)
Checking out files: 100% (10676/10676), done.
$ git status
# On branch master
# Changed but not updated:
#   (use "git add <file>..." to update what will be committed)
#
#       modified:   iconvdata/ibm1122.c
#       modified:   localedata/charmaps/IBM862
#
no changes added to commit (use "git add" and/or "git commit -a")
$ ls -l iconvdata/ibm1122.c localedata/charmaps/IBM862
-rw-r--r-- 1 tschwinge tschwinge 0 2008-12-15 15:49 iconvdata/ibm1122.c
-rw-r--r-- 1 tschwinge tschwinge 0 2008-12-15 15:49 localedata/charmaps/IBM862

So these files are indeed of zero-length in the checked-out tree. Is this Git's fault or something else's?

Fixing this situation is easy enough:

$ git checkout -- iconvdata/ibm1122.c localedata/charmaps/IBM862
$ git status
# On branch master
nothing to commit (working directory clean)

Still seen on 2010-03-16.


A very similar issue, seen on 2010-11-17. The working tree had a lot of differences to HEAD.

tschwinge@grubber:~/tmp/gcc/hurd $ git reset --hard HEAD
error: unable to unlink old 'gcc/config/darwin.h' (Interrupted system call)
Checking out files: 100% (1149/1149), done.
fatal: Could not reset index file to revision 'HEAD'.
tschwinge@grubber:~/tmp/gcc/hurd $ git reset --hard HEAD
error: unable to unlink old 'gcc/config/iq2000/iq2000.md' (Interrupted system call)
error: git checkout-index: unable to create file gcc/config/lm32/lm32.c (File exists)
Checking out files: 100% (1149/1149), done.
fatal: Could not reset index file to revision 'HEAD'.
tschwinge@grubber:~/tmp/gcc/hurd $ ls -l gcc/config/iq2000/iq2000.md gcc/config/lm32/lm32.c
ls: cannot access gcc/config/iq2000/iq2000.md: No such file or directory
-rw-r--r-- 1 tschwinge tschwinge 32159 Nov 17 19:09 gcc/config/lm32/lm32.c
tschwinge@grubber:~/tmp/gcc/hurd $ git reset --hard HEAD
error: git checkout-index: unable to create file gcc/fortran/expr.c (Interrupted system call)
Checking out files: 100% (1149/1149), done.
fatal: Could not reset index file to revision 'HEAD'.
tschwinge@grubber:~/tmp/gcc/hurd $ git reset --hard HEAD
error: git checkout-index: unable to create file gcc/config/sol2.h (Interrupted system call)
Checking out files: 100% (1149/1149), done.
fatal: Could not reset index file to revision 'HEAD'.
tschwinge@grubber:~/tmp/gcc/hurd $ git reset --hard HEAD
error: unable to unlink old 'gcc/config/i386/i386.c' (Interrupted system call)
Checking out files: 100% (1149/1149), done.
fatal: Could not reset index file to revision 'HEAD'.
tschwinge@grubber:~/tmp/gcc/hurd $ git reset --hard HEAD
Checking out files: 100% (1149/1149), done.
HEAD is now at fe3e43c Merge commit 'refs/top-bases/hurd/master' into hurd/master

2010-12-22, grubber:

$ git remote update
Fetching savannah
remote: Counting objects: 582331, done.
remote: Compressing objects: 100% (124133/124133), done.
remote: Total 582331 (delta 460856), reused 578352 (delta 457598)
Receiving objects: 100% (582331/582331), 525.15 MiB | 204 KiB/s, done.
fatal: cannot pread pack file: Interrupted system call
fatal: index-pack failed
error: Could not fetch savannah

2011-06-10, coulomb.SCHWINGE, checking out binutils' master branch, starting from an empty working directory (after an external git push):

$ git checkout -f
fatal: cannot create directory at 'gas/testsuite/gas/bfin': Interrupted system call
$ git checkout -f
error: unable to create file gas/testsuite/gas/i386/ilp32/x86-64-sse4_1-intel.d (File exists)
warning: unable to unlink gas/testsuite/gas/m68k-coff: Operation not permitted
fatal: cannot create directory at 'gas/testsuite/gas/m68k-coff': Operation not permitted
$ git checkout -f
error: unable to create file gas/testsuite/gas/h8300/h8300.exp (File exists)
error: unable to create file gas/testsuite/gas/i386/x86-64-addr32-intel.d (File exists)
error: unable to create file gas/testsuite/gas/ia64/secname.d (File exists)
error: unable to create file gas/testsuite/gas/m68k/pr11676.s (File exists)
Checking out files: 100% (12315/12315), done.
$ git status
# On branch master
# Changes not staged for commit:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
#       modified:   gas/testsuite/gas/h8300/h8300.exp
#       modified:   gas/testsuite/gas/i386/x86-64-addr32-intel.d
#       modified:   gas/testsuite/gas/ia64/secname.d
#       modified:   gas/testsuite/gas/m68k/pr11676.s
#
no changes added to commit (use "git add" and/or "git commit -a")
$ rm gas/testsuite/gas/h8300/h8300.exp gas/testsuite/gas/i386/x86-64-addr32-intel.d gas/testsuite/gas/ia64/secname.d gas/testsuite/gas/m68k/pr11676.s
$ git checkout -f
$ git status
# On branch master
nothing to commit (working directory clean)

Analysis

2011-06-13

Running git checkout -f under GDB:

error: git checkout-index: unable to create file gas/testsuite/gas/cris/string-1.s (File exists)
error: git checkout-index: unable to create file gas/testsuite/gas/i386/x86-64-sse-check.d (File exists)
error: git checkout-index: unable to create file gas/testsuite/gas/i386/x86-64-sse4_1.d (File exists)
error: git checkout-index: unable to create file gas/testsuite/gas/ppc/astest.d (File exists)
error: git checkout-index: unable to create file gas/testsuite/gas/tic6x/reloc-bad-4.s (File exists)
warning: unable to unlink include/cgen: Operation not permitted
fatal: cannot create directory at 'include/cgen': Operation not permitted

Again:

error: git checkout-index: unable to create file gas/config/te-vxworks.h (File exists)
error: git checkout-index: unable to create file gas/testsuite/gas/cris/string-1.s (File exists)
error: git checkout-index: unable to create file gas/testsuite/gas/d10v/warning-019.s (File exists)
error: git checkout-index: unable to create file gas/testsuite/gas/i860/dual03.s (File exists)
error: git checkout-index: unable to create file ld/testsuite/ld-mmix/sec-7a.s (File exists)
warning: unable to unlink ld/testsuite/ld-powerpc: Operation not permitted
fatal: cannot create directory at 'ld/testsuite/ld-powerpc': Operation not permitted

And: git duplicated content.

All these (very likely) have the same root cause: SA_RESTART restarting too much.

With git checkout, Git uses in progress.c a SIGALRM handler (SA_RESTART; invoked every second via setitimer(ITIMER_REAL)) to display status messages: x % already checked out.

To avoid the status update signals every second, in [git]/progress.c:start_progress_delay we can just return NULL (manually in GDB, for example), then both the error: git checkout-index and the duplicated content issues go away.

I'm guessing that when returning from a SA_RESTART signal handler, too much of the ``syscall''s is being restarted. For example, if a file has already been created, the restarted creation attempt would fail: File exists. If data has been written, it might get written again (duplication issue). Then, there are cases where unlink apparently returns EINTR, which is not kosher either. Etc.

Do we have problems with SA_RESTART vs. the atomicity of our syscall-alikes?

Posted 2009-05-19 10:01:42 UTC Tags:

The runit package doesn't work, even its test suite doesn't finish.

Thomas Schwinge once was having a look at that, but this very report is just from his memory, and his memory is dim... The problem might either be a time stamping issue (which might be fixed by now) or it might be the select call failing issue we're seeing from time to time. Or something else.

?Harish Badrinath Originally answered by Samuel Thibault:

120->proc_dostop_request ( 138) = 0

Usual issue with rpctrace: it does not support fork().

I've checked a backtrace in gdb, got this:

 0x0105af6c in mach_msg_trap ()
   at /build/eglibc-jWVnRE/eglibc-2.13/build-tree/hurd-i386-libc/mach/mach_msg_trap.S:2
1  0x0105b769 in __mach_msg (msg=0x1024af8, option=258, send_size=0, rcv_size=40, rcv_name=140,
   timeout=1000020, notify=0) at msg.c:110
2  0x01062251 in _hurd_select (nfds=2, pollfds=0x1024dc0, readfds=0x0, writefds=0x0, exceptfds=0x0,
   timeout=0x1024bbc, sigmask=0x0) at hurdselect.c:324
3  0x0114427b in __poll (fds=0x1024dc0, nfds=2, timeout=1000020) at ../sysdeps/mach/hurd/poll.c:48
4  0x0804b770 in iopause (x=0x1024dc0, len=2, deadline=0x1024dd8, stamp=0x1024de8) at iopause.c:29
5  0x08048efc in main (argc=2, argv=0x1024e94) at runsv.c:543

and main() shows up as:

   sig_unblock(sig_term);
   sig_unblock(sig_child);
 ->  iopause(x, 2 +haslog, &deadline, &now);
   sig_block(sig_term);
   sig_block(sig_child);

So it simply looks like the known "signals don't interrupt select" bug.

Posted 2009-05-19 10:01:42 UTC Tags:

adduser does work as expected, the following warnings are spurious, they just appear when one doesn't have the nscd package. They do not appear on linux boxes because there posix_spawn doesn't report ENOENT for exec(). Posix indeed says that `if the error occurs after the calling process successfully returns, the child process shall exit with exit status 127'. The hurd however reports all errors, thus the warning.

$ sudo adduser foo
Adding user `foo' ...
Adding new group `foo' (1002) ...
posix_spawn() error=1073741826
posix_spawn() error=1073741826
posix_spawn() error=1073741826
Adding new user `foo' (1002) with group `foo' ...
posix_spawn() error=1073741826
posix_spawn() error=1073741826
posix_spawn() error=1073741826
posix_spawn() error=1073741826
Creating home directory `/home/foo' ...
Copying files from `/etc/skel' ...
[...]

Reported at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=623199

Posted 2009-05-19 10:01:42 UTC Tags:
License:

GFDL 1.2+

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.

Single-threaded use appears to work:

$ echo 'int main(void) { int *a; a[10]=0; return a[5]; }' | ↩
  gcc -o a -fmudflap -x c - -lmudflap
$ ./a
*******
mudflap violation 1 (check/write): time=1227208721.922064 ptr=0x1023de0 size=4
pc=0x1037a33 location=`<stdin>:1:26 (main)'
      /usr/lib/libmudflap.so.0(__mf_check+0x33) [0x1037a33]
      ./a(main+0x7c) [0x80486c4]
      /usr/lib/libmudflap.so.0(__wrap_main+0x49) [0x1037239]
Nearby object 1: checked region begins 68B before and ends 65B before
mudflap object 0x80ca268: name=`argv[]'
bounds=[0x1023e24,0x1023e2b] size=8 area=static check=0r/0w liveness=0
alloc time=1227208721.922064 pc=0x10371d3
Nearby object 2: checked region begins 76B before and ends 73B before
mudflap object 0x80cb448: name=`environ[]'
bounds=[0x1023e2c,0x1023ed7] size=172 area=static check=0r/0w liveness=0
alloc time=1227208721.922064 pc=0x10371d3
number of nearby objects: 2
*******
mudflap violation 2 (check/read): time=1227208721.942109 ptr=0x1023dcc size=4
pc=0x1037a33 location=`<stdin>:1:35 (main)'
      /usr/lib/libmudflap.so.0(__mf_check+0x33) [0x1037a33]
      ./a(main+0xf3) [0x804873b]
      /usr/lib/libmudflap.so.0(__wrap_main+0x49) [0x1037239]
Nearby object 1: checked region begins 88B before and ends 85B before
mudflap object 0x80ca268: name=`argv[]'
Nearby object 2: checked region begins 96B before and ends 93B before
mudflap object 0x80cb448: name=`environ[]'
number of nearby objects: 2

Multi-threaded use doesn't:

$ echo 'int main(void) { int *a; a[10]=0; return a[5]; }' | ↩
  gcc -include pthread.h -o a -fmudflapth -x c - -lmudflapth -lpthread
$ ./a 
Killed
$ gdb a
[...]
Starting program: /media/data/home/tschwinge/a 

Program received signal EXC_BAD_ACCESS, Could not access memory.
0x01180653 in getenv () from /lib/libc.so.0.3
(gdb) bt
#0  0x01180653 in getenv () from /lib/libc.so.0.3
#1  0x01177a02 in __dcigettext () from /lib/libc.so.0.3
#2  0x01176a57 in dcgettext () from /lib/libc.so.0.3
#3  0x011c03b5 in strerror_r () from /lib/libc.so.0.3
#4  0x01175b57 in __assert_perror_fail () from /lib/libc.so.0.3
#5  0x0111f1ad in cthread_fork (func=0x114f630 <_hurd_msgport_receive>, arg=0x0)
    at /build/buildd/hurd-20080607/build-tree/hurd/libpthread/pthread/cthreads-compat.c:41
#6  0x0115713e in _hurdsig_init () from /lib/libc.so.0.3
#7  0x01140852 in _hurd_proc_init@@GLIBC_2.2.6 () from /lib/libc.so.0.3
#8  0x01140e86 in _hurd_init () from /lib/libc.so.0.3
#9  0x011690ce in init1 () from /lib/libc.so.0.3
#10 0x00001e96 in _dl_start_user () from /lib/ld.so
#11 0x00000001 in ?? ()
#12 0x01024000 in ?? ()
#13 0x00000000 in ?? ()

Also libmudflap is pthread-only.

Posted 2009-05-19 09:30:24 UTC Tags:
License:

GFDL 1.2+

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.