hang when building packages on unstable9s

[Dagobert Michelsen]

Hi folks,

Am 29.03.2015 um 22:21 schrieb Maciej Bliziński <maciej at opencsw.org>:
> On Sun, Mar 29, 2015 at 10:19:58PM +0200, Dagobert Michelsen wrote:
>> Am 29.03.2015 um 20:23 schrieb Maciej Bliziński via buildfarm <buildfarm at lists.opencsw.org>:
>>> Hangs in unstable9x too.
>> 
>> This is very strange as unstable9s uses a loopback filesystem and unstable10s works
>> fine as far as I can tell. The testing I did worked fine, do you have a specific recipe
>> I can run to reproduce the issue? I would like to understand the problem before booting
>> the whole farm.
> 
> I've submitted my changes, try building pkg/arc/trunk. This triggers the
> problem for me.

I just rebooted the global zone where NFS, login, unstable10s and others are hosted
and the problem is still present. One more good reason to not boot servers if there
is a problem :-)

The situation looks like this at the moment: On unstable9s some specific
commands are stuck during fork while the machine continues to run and
login and some commands are still possible. Here is the process tree and
stack for one of the hanging commands, maybe someone has a striking idea.

unstable9s# ptree 18150
16482 /usr/lib/ssh/sshd
  16816 /usr/lib/ssh/sshd
    16823 /usr/lib/ssh/sshd
      16826 -zsh
        17145 /bin/bash /opt/csw/bin/mgar package
          17182 gmake -I /home/dam/mgar/pkg/.buildsys/v2 package
            18150 gmake GAR_PLATFORM=solaris9-sparc MODULATION=isa-sparcv8 ISA=
              18519 /bin/sh -c ( if ggrep -q 'diff --git' /home/dam/mgar/pkg/ar
                18520 /bin/sh -c ( if ggrep -q 'diff --git' /home/dam/mgar/pkg/
                  18525 git am --ignore-space-change --ignore-whitespace /home/
                    18527 git am --ignore-space-change --ignore-whitespace /hom

unstable9s# pstack 18527
18527:  git am --ignore-space-change --ignore-whitespace /home/dam/mgar/pkg/ar
 ff3dcba4 lwp_park (0, 0, 0)
 ff3d3d3c s9_lwp_park (0, 0, 0, 0, 0, 0) + 6c
 ff3dcb08 s9_handler (0, 0, 0, 0, 0, 0) + 90
 feca11bc mutex_lock_queue (fecb8c04, 0, feda0428, 0, 0, 0) + 104
 feca18cc mutex_lock_internal (0, 0, fecb0000, 0, 0, 0) + 610
 fed78440 atfork_append (0, 0, fef1d060, feda0424, feda0428, 0) + 4
 fed785ac pthread_atfork (0, 0, fef1d060, fffbf8dc, 40400, 406e0) + 24
 fef1d0dc ???????? (fef1d060, fef63a18, 0, 6000, fef63a18, 6000)
 fed78788 run_postfork_child (feda0410, feda0428, 23854, fec9cfa8, 5, 0) + 24
 fec9cfa8 fork1    (1, 1afc8, 0, 0, 0, 0) + f4
 fec9d05c fork     (0, 4, ffbff4a8, 223544, 1b5d80, 0) + 28
 00151534 start_command (ffbff58c, 0, 9, 0, 0, 0) + 220
 00151b80 run_command (ffbff58c, 0, 20, 0, 8, 8) + 4
 00151cac run_command_v_opt (ffbff748, 28, 1e6c00, 223544, 1b5d80, 0) + 14
 000212a8 ???????? (ffbff748, ffffffff, 1fc000, 223544, 1aadd0, 0)
 00021308 ???????? (ffbff724, ffbff728, ffbffb80, 1dadc8, 0, 1b5000)
 00021448 main     (ffbff748, ffbff724, 1fc818, 1b6fe8, ffbff728, ffbff890) + f8
 0001f840 _start   (0, ffbff744, 1, ff3dca78, ff3ee850, ff3ee000) + 108


Best regards

  — Dago

-- 
"You don't become great by trying to be great, you become great by wanting to do something,
and then doing it so hard that you become great in the process." - xkcd #896

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