Re: applications running in KVM crashing?

[Nikola Ciprich <extmaillist@linuxbox.cz>]

On Wed, Jun 09, 2010 at 02:18:00PM +0200, Nikola Ciprich wrote:
> > backtrace / disassembly of the failing instructions will help.  Do
> > the failures always occur in the same ip or random ips?

Hello Avi,
FINALLY I got another crash, so I can provide proper backtrace.
[1170486.891280] postmaster[3594] trap invalid opcode ip:7f6391472273 sp:7fff48ce2158 error:0 in libpthread-2.5.so[7f6391468000+16000]

bt full:

Core was generated by `/usr/bin/postmaster -p 5432 -D /home/pgsql/data'.
Program terminated with signal 4, Illegal instruction.
#0  0x00007f6391472273 in pthread_rwlock_rdlock () from /lib64/libpthread.so.0
#0  0x00007f6391472273 in pthread_rwlock_rdlock () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x00007f6392bde166 in __dcigettext (domainname=0x0, msgid1=0x7a5bf4 "server process", msgid2=0x0, plural=0, n=0, category=5)
    at dcigettext.c:452
        domain = <value optimized out>
        binding = <value optimized out>
        categoryname = <value optimized out>
        categoryvalue = <value optimized out>
        dirname = <value optimized out>
        xdomainname = <value optimized out>
        single_locale = <value optimized out>
        retval = 0x0
        retlen = <value optimized out>
        saved_errno = <value optimized out>
        search = <value optimized out>
        foundp = 0x0
        msgid_len = 6836378
        localename = <value optimized out>
        domainname_len = <value optimized out>
        tree_lock = {__data = {__lock = 0, __nr_readers = 0, __readers_wakeup = 0, __writer_wakeup = 0, __nr_readers_queued = 0,
            __nr_writers_queued = 0, __writer = 0, __shared = 0, __pad1 = 0, __pad2 = 0, __flags = 0},
          __size = '\000' <repeats 55 times>, __align = 0}
#2  0x00000000005b2bbc in CleanupBackend (postgres_signal_arg=<value optimized out>) at postmaster.c:2490
No locals.
#3  reaper (postgres_signal_arg=<value optimized out>) at postmaster.c:2463
        save_errno = 4
        pid = 3545
        exitstatus = 0
        status = 0
        __func__ = "reaper"
#4  <signal handler called>
No symbol table info available.
#5  0x00007f6392c7ffa3 in __select_nocancel () from /lib64/libc.so.6
No symbol table info available.
#6  0x00000000005b02f7 in ServerLoop () at postmaster.c:1347
        timeout = {tv_sec = 59, tv_usec = 32718}
        rmask = {fds_bits = {56, 0 <repeats 15 times>}}
        selres = <value optimized out>
        readmask = {fds_bits = {56, 0 <repeats 15 times>}}
        nSockets = 6
        now = 1279098771
        last_touch_time = 1279097691
        __func__ = "ServerLoop"
#7  0x00000000005b18ac in PostmasterMain (argc=5, argv=0x1bac9d0) at postmaster.c:1040
        opt = <value optimized out>
        status = <value optimized out>
        userDoption = <value optimized out>
        __func__ = "PostmasterMain"
#8  0x000000000055f56e in main (argc=5, argv=<value optimized out>) at main.c:188
No locals.


I'm not sure if this is exactly what You need, so please feel free to demand further information.
I've got corefile here, so hopefully I can dig more from gdb if You need (and tell me what to do).
have a nice day!
nik

> 
> > 
> > -- 
> > error compiling committee.c: too many arguments to function
> > 
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> 
> -- 
> -------------------------------------
> Ing. Nikola CIPRICH
> LinuxBox.cz, s.r.o.
> 28. rijna 168, 709 01 Ostrava
> 
> tel.:   +420 596 603 142
> fax:    +420 596 621 273
> mobil:  +420 777 093 799
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> 
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-- 
-------------------------------------
Ing. Nikola CIPRICH
LinuxBox.cz, s.r.o.
28. rijna 168, 709 01 Ostrava

tel.:   +420 596 603 142
fax:    +420 596 621 273
mobil:  +420 777 093 799
www.linuxbox.cz

mobil servis: +420 737 238 656
email servis: servis@linuxbox.cz
-------------------------------------