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Date:      Tue, 18 Apr 2000 19:30:47 +0100
From:      Ben Smithurst <ben@scientia.demon.co.uk>
To:        questions@FreeBSD.org
Subject:   sudden signal 11s (again)
Message-ID:  <20000418193047.A54921@strontium.scientia.demon.co.uk>

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A while ago, I reported this:
(message id was <20000405162637.A93540@strontium.scientia.demon.co.uk>)

> Apr  5 15:43:18 platinum /kernel: pid 14338 (sshd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:50:11 platinum /kernel: pid 15991 (sshd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:50:14 platinum /kernel: pid 16416 (sshd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:50:25 platinum /kernel: pid 16903 (sshd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:50:45 platinum /kernel: pid 17715 (inetd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:50:45 platinum /kernel: pid 34134 (lpd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:50:45 platinum inetd[33097]: /usr/libexec/fingerd[17715]: exit status 0x8b
> Apr  5 15:50:45 platinum /kernel: pid 17945 (inetd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:50:45 platinum /kernel: pid 24914 (rpc.statd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:50:45 platinum /kernel: pid 21978 (portmap), uid 1: exited on signal 11
> Apr  5 15:50:48 platinum /kernel: pid 18814 (sshd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:50:55 platinum /kernel: pid 18890 (sshd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:52:23 platinum /kernel: pid 19493 (sshd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:52:30 platinum /kernel: pid 19530 (sshd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:52:35 platinum /kernel: pid 19790 (sshd), uid 0: exited on signal 11 (core dumped)
> Apr  5 15:53:32 platinum /kernel: pid 23406 (xterm), uid 0: exited on signal 11
> Apr  5 15:53:33 platinum /kernel: pid 21315 (sh), uid 1001: exited on signal 11 (core dumped)
> Apr  5 15:53:33 platinum /kernel: pid 20603 (xinit), uid 1001: exited on signal 10 (core dumped)
> Apr  5 15:54:45 platinum init: fatal signal: Segmentation fault
> Apr  5 15:55:15 platinum init: /etc/rc.shutdown returned status 11

I've just had a load of similar problems on another machine, followed by a
spontaneous reboot.  (I was in X at the time so I don't know if any messages
were printed on the console.  All I see in the log is:

Apr 18 18:22:35 strontium /kernel: pid 72808 (xterm), uid 0: exited on signal 11
Apr 18 18:25:00 strontium CRON[93826]: (root) CMD (/usr/libexec/atrun) 
Apr 18 18:30:00 strontium CRON[15599]: (root) CMD (/usr/libexec/atrun) 
Apr 18 18:32:43 strontium /kernel: pid 18729 (exim), uid 10: exited on signal 11
Apr 18 18:35:01 strontium CRON[22308]: (root) CMD (/usr/libexec/atrun) 
Apr 18 18:40:01 strontium CRON[45363]: (root) CMD (/usr/libexec/atrun) 
Apr 18 18:45:00 strontium CRON[61942]: (root) CMD (/usr/libexec/atrun) 
Apr 18 18:47:42 strontium /kernel: pid 80705 (exim), uid 10: exited on signal 11
Apr 18 18:50:00 strontium CRON[47721]: (root) CMD (/usr/libexec/atrun) 
Apr 18 18:55:00 strontium CRON[48465]: (root) CMD (/usr/libexec/atrun) 
Apr 18 19:00:00 strontium CRON[28780]: (root) CMD (newsyslog) 
Apr 18 19:00:00 strontium CRON[28910]: (root) CMD (/usr/libexec/atrun) 
Apr 18 19:02:42 strontium /kernel: pid 53590 (exim), uid 10: exited on signal 11
Apr 18 19:05:00 strontium CRON[44727]: (root) CMD (/usr/libexec/atrun) 
Apr 18 19:09:42 strontium /kernel: pid 73638 (xterm), uid 0: exited on signal 11
Apr 18 19:09:53 strontium /kernel: pid 73275 (xterm), uid 0: exited on signal 11
Apr 18 19:10:00 strontium CRON[55815]: (root) CMD (/usr/libexec/atrun) 
Apr 18 19:11:09 strontium /kernel: pid 12680 (sshd), uid 0: exited on signal 11 (core dumped)
Apr 18 19:11:14 strontium /kernel: pid 91594 (sshd), uid 0: exited on signal 11 (core dumped)
Apr 18 19:11:15 strontium /kernel: pid 66665 (sshd), uid 0: exited on signal 11 (core dumped)
Apr 18 19:11:15 strontium /kernel: pid 12495 (sshd), uid 0: exited on signal 11 (core dumped)
Apr 18 19:11:15 strontium /kernel: pid 51208 (sshd), uid 0: exited on signal 11 (core dumped)
Apr 18 19:11:16 strontium sshd[40492]: Connection rate limit of 5/10s has been exceeded; dropping connection from 0.0.0.0.
Apr 18 19:11:16 strontium sshd[40492]: Connection rate limit of 5/10s has been exceeded; dropping connection from 0.0.0.0.
Apr 18 19:11:21 strontium /kernel: pid 82381 (sshd), uid 0: exited on signal 11 (core dumped)
Apr 18 19:11:22 strontium /kernel: pid 55054 (sshd), uid 0: exited on signal 11 (core dumped)
Apr 18 19:13:48 strontium /kernel: pid 71528 (xterm), uid 0: exited on signal 11
Apr 18 19:13:51 strontium /kernel: pid 46370 (communicator-4.6), uid 1000: exited on signal 10 (core dumped)

I'm pretty sure now it's not hardware, although I also can't see where a
bug like this could have come from if it is in FreeBSD.  The exact same
problem has happened on two machines, within the space of a couple of
weeks, and neither machine ever had problems with 3-STABLE, and neither
of my other two machines (running 3-STABLE) have done this.

Does anyone have any suggestions about what I could do to investigate
this if it happens again?  I'll upgrade to the latest -stable first
though.

-- 
Ben Smithurst / ben@scientia.demon.co.uk / PGP: 0x99392F7D


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