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[resent] Panic (rwlock error)


My cobalt qube2 is panicing quite often (every few days). But it does not reboot. It gets stuck in syncing disks.
Here is a capture of the last panic:

Oct 16 18:31:56 qube2 sshd[1612]: fatal: Timeout before authentication for
Reader / writer lock error: rw_vector_enter: locking against myself

lock address : 0x00000000c005a65c
current cpu  :                  0
current lwp  : 0x0000000084ed4d60
owner/count  : 0x0000000084ed4d60 flags    : 0x0000000000000004

panic: lock error
Begin traceback...
pid -869090792 not found
End traceback...
syncing disks...

At this point, the console is not responsive (but I access it through ssh->screen->tip; I tried ~~B)

Does this ring any bell ?
Any thing I should mention about my setup ?


Rémi Zara

Some infos:
uname -v = NetBSD 4.99.72 (GENERIC) #0: Thu Sep 18 07:49:27 PDT 2008 builds [ a t ] wb30:/home/builds/ab/HEAD/cobalt/200809180002Z-obj/home/ builds/ab/HEAD/src/sys/arch/cobalt/compile/GENERIC
The box has 256MB of ram.
The disks is 250GB, journaled UFS
 postgresql buildfarm (CVS+compiled+tests)
 nfs server for other postgresql buildfarm
 regular large rsync over ssh

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