LOR sleepq/scrlock

John Baldwin jhb at freebsd.org
Tue Apr 8 14:26:55 UTC 2008

On Tuesday 08 April 2008 04:06:24 am Aristedes Maniatis wrote:
> FreeBSD dash.ish.com.au 7.0-RELEASE FreeBSD 7.0-RELEASE #10
> i386 with PAE (5Gb RAM)
> We've had fairly reproducible freezes. After several hours of stress
> testing or even overnight not doing anything, everything locks up
> including the console.
> We then installed a debugging kernel (without INVARIANTS since that
> prevented the kernel from compiling at all) and obtained this LOR when
> it froze:
> LOR:
> 1st 0x807d3d90 sleepq chain (sleepq chain) @/usr/src/sys/kern/
> subr_sleepqueue.c:773
> 2nd 0x807c8110 scrlock (scrlock) @/usr/src/sys/dev/syscons/syscons.c:
> 2526
> I have taken photographs of the KDB output following this but have not
> transcribed it until someone says that it will be useful to them. I
> could put it up as slightly fuzzy screen photographs on our web site.

The stack trace info would be useful.  A photo would be fine.

John Baldwin

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