Sleeping on "itrmh" with the following non-sleepable locks held:
From: Andre Guibert de Bruet (andy_at_siliconlandmark.com)
Date: 06/30/04
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Date: Wed, 30 Jun 2004 08:36:31 -0400 (EDT) To: anholt@freebsd.org
Hello,
I managed to get the following printed on a serial console while shutting
down XFree86 today:
Sleeping on "itrmh" with the following non-sleepable locks held:
exclusive sleep mutex drm device r = 0 (0x6505f464) locked @
dev/drm/drm_irq.h:192
Stack backtrace:
backtrace(607dd224,b00c894c,1,6599e6e0,65945d20) at 0x60564407
witness_warn(5,64faf380,60735d8f,60732f57,15a) at 0x605893f3
msleep(65777b40,64faf380,a0,60732f57,0) at 0x6056b98a
ithread_remove_handler(65777b40,b00c89bc,606e4ad1,65777b40,b00c89e4) at
0x6054d695
I had DRM_DEBUG turned on and a console actively logging at the time, so I
was able to produce a full trace with the DRM_DEBUG messages before and
after. I have attached the file to this email.
My kernel is fairly stock, with amr, nge, smp and DRM_DEBUG enabled. I can
make my config file available as well as the full hardware specifications
for the machine that this was found on. Google turned up something similar
from last December, involving the same line of code, but it was a LOR.
That report can be found here:
http://lists.freebsd.org/pipermail/freebsd-current/2003-December/015540.html
Any ideas?
Andy
> Andre Guibert de Bruet | Enterprise Software Consultant >
> Silicon Landmark, LLC. | http://siliconlandmark.com/ >
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