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Date:      Tue, 22 Jul 2008 15:26:29 -0400
From:      Mikhail Teterin <mi+mill@aldan.algebra.com>
To:        Kostik Belousov <kostikbel@gmail.com>
Cc:        Kris Kennaway <kris@freebsd.org>, questions@freebsd.org, stable@freebsd.org, Jeremy Chadwick <koitsu@freebsd.org>
Subject:   Re: "sleeping without queue" ?
Message-ID:  <48863465.8080204@aldan.algebra.com>
In-Reply-To: <20080722192155.GC17123@deviant.kiev.zoral.com.ua>
References:  <4885F2A6.5020204@aldan.algebra.com> <4885FCE5.1060507@FreeBSD.org> <48860725.9050808@aldan.algebra.com> <20080722161958.GA11139@eos.sc1.parodius.com> <48860E8C.6050400@FreeBSD.org> <48860EF6.2040007@aldan.algebra.com> <48861284.1050706@FreeBSD.org> <48861448.7020708@aldan.algebra.com> <20080722192155.GC17123@deviant.kiev.zoral.com.ua>

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Kostik Belousov ΞΑΠΙΣΑΧ(ΜΑ):
> Did you switched to the process before doing backtrace (using the proc <pid>
> command)?
Ok, thanks. Did not know about this one. Here:
...
(kgdb) proc 79759
(kgdb) bt
#0  sched_switch (td=0xffffff01286dc000, newtd=0xffffff00010ce000, 
flags=2) at /var/src/sys/kern/sched_4bsd.c:928
#1  0x0000000000000000 in ?? ()
#2  0xffffffff802f1108 in mi_switch (flags=678281216, newtd=0x2) at 
/var/src/sys/kern/kern_synch.c:442
#3  0xffffffff80318513 in sleepq_check_timeout () at 
/var/src/sys/kern/subr_sleepqueue.c:519
#4  0xffffffff80318c85 in sleepq_timedwait (wchan=0xffffffff80688408) at 
/var/src/sys/kern/subr_sleepqueue.c:597
#5  0xffffffff802f16a2 in _sleep (ident=0xffffffff80688408, lock=0x0, 
priority=0, wmesg=0xffffffff804f3059 "vmo_de", timo=1) at 
/var/src/sys/kern/kern_synch.c:224
#6  0xffffffff8043036b in vm_object_deallocate 
(object=0xffffff0053024a90) at /var/src/sys/vm/vm_object.c:509
#7  0xffffffff8042920e in vm_map_delete (map=0xffffff0015ba4b60, 
start=18446742979242478224, end=140737488355328) at 
/var/src/sys/vm/vm_map.c:2315
#8  0xffffffff804293df in vm_map_remove (map=0xffffff0015ba4b60, 
start=0, end=140737488355328) at /var/src/sys/vm/vm_map.c:2423
#9  0xffffffff8042b813 in vmspace_exit (td=0xffffff01286dc000) at 
/var/src/sys/vm/vm_map.c:324
#10 0xffffffff802c8cff in exit1 (td=0xffffff01286dc000, rv=0) at 
/var/src/sys/kern/kern_exit.c:294
#11 0xffffffff802ca08e in sys_exit (td=Variable "td" is not available.
) at /var/src/sys/kern/kern_exit.c:98
#12 0xffffffff8045a700 in syscall (frame=0xffffffffb0d89c70) at 
/var/src/sys/amd64/amd64/trap.c:852
#13 0xffffffff8043f38b in Xfast_syscall () at 
/var/src/sys/amd64/amd64/exception.S:290
#14 0x000000080095f34c in ?? ()
Previous frame inner to this frame (corrupt stack?)

> What is the exact version of the system ? Note that procstat
> appeared in the late RELENG_7.
FreeBSD 7.0-STABLE #0: Sat Mar  8 16:02:37 EST 2008
>
> Also, show the output of ps axl <pid>.
  UID   PID  PPID CPU PRI NI   VSZ   RSS MWCHAN STAT  TT       TIME COMMAND
    0 79759 79758   0  96  0     0    16 -      DE+   p6    0:00,00 
/bin/tcsh -fc 
/meow/ports/editors/openoffice.org-3/work/BEB300_m3/solver/300/unxfbsdx.pro/bin/ma

Yours,

    -mi



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