Date: Thu, 20 Nov 2003 11:03:42 -0800 From: Kris Kennaway <kris@obsecurity.org> To: current@FreeBSD.org Subject: spin lock sched lock held by 0xc25a8640 for > 5 seconds Message-ID: <20031120190342.GA87876@xor.obsecurity.org>
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I updated bento last night, and it panicked after a few hours with:
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 01
fault virtual address = 0xe5
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc052e219
stack pointer = 0x10:0xe00d2c3c
frame pointer = 0x10:0xe00d2c64
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = resume, IOPL = 0
current process = 40 (irq29: sym0)
spin lock sched lock held by 0xc25a8640 for > 5 seconds
panic: spin lock held too long
cpuid = 1;
Debugger("panic")
Unfortunately it hangs there instead of breaking to DDB.
The instruction pointer is in:
...
c052e000 t propagate_priority
c052e360 T init_turnstiles
...
I'm currently rebuilding without WITNESS_SKIPSPIN in case this catches it.
Kris
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