Date: Wed, 19 Feb 2003 14:43:19 -0500 From: Mike Tancsa <mike@sentex.net> To: Dag-Erling Smorgrav <des@ofug.org> Cc: freebsd-hackers@freebsd.org Subject: Re: debugging a repeating panic that does not produce a dump Message-ID: <5.2.0.9.0.20030219143729.05f5e308@marble.sentex.ca> In-Reply-To: <xzpel64vzjf.fsf@flood.ping.uio.no> References: <5.2.0.9.0.20030219101029.041d18d8@marble.sentex.ca> <5.2.0.9.0.20030217135903.064d7378@marble.sentex.ca> <5.2.0.9.0.20030217091242.05b184b0@marble.sentex.ca> <5.2.0.9.0.20030217091242.05b184b0@marble.sentex.ca> <5.2.0.9.0.20030217135903.064d7378@marble.sentex.ca> <5.2.0.9.0.20030219101029.041d18d8@marble.sentex.ca>
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It only happens when periodic runs, but it on occasion skips a day. Eg.
yesterday it did not do it. It only started happening post Jan28th. I can
brutalize the server with repeated buildworlds (-j2 through 8) and it is
always successful. Its only on periodic that it dies and find is always
the process running. Its only with SMP as well on this 'oldish' machine
---Mike
At 08:30 PM 19/02/2003 +0100, Dag-Erling Smorgrav wrote:
>Mike Tancsa <mike@sentex.net> writes:
> > Fatal trap 12: page fault while in kernel mode
> > mp_lock = 00000002; cpuid = 0; lapic.id = 01000000
> > fault virtual address = 0xc6efa8e8
>
>Hmm, different fault address this time.
>
> > (kgdb) up 6
> > #6 0xc0174830 in makedev (x=28, y=160) at
> /usr/src/sys/kern/kern_conf.c:207
>
>These numbers look perfectly valid (cuaia0). The only explanation I
>can think of is some kind of race, or some kind of corruption.
>Hopefully somebody more clued than myself will be able to figure it
>out.
>
>DES
>--
>Dag-Erling Smorgrav - des@ofug.org
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