Date: Wed, 1 Jan 2003 13:16:15 +0000 (GMT) From: Gavin Atkinson <gavin@ury.york.ac.uk> To: current@freebsd.org Subject: Panic during ata_resume (sound) Message-ID: <20021231222651.B24167-100000@ury.york.ac.uk>
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Another panic. Kernel from 19th Dec. Laptop suspended itself (for no
reason), and upon resume got this: (again, laptop could not manage to do
the dump, so this is hand transcribed)
wakeup from sleeping state (slept 00:02:53)
ata0: resetting devices ..
done
ata1: resetting devices ..
done
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x0
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01fb093
stack pointer = 0x10:0xc874db48
frame pointer = 0x10:0xc874db68
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 13 (swi6: tty:sio clock)
Stopped at _mtx_lock_flags + 0x43 cmpl $0xc03d16a0, 0(ebx)
_mtx_lock_flags() at _mtx_lock_flags+0x43
mixer_reinit() at
ds_ps_resume()
bus_generic_resume()
bus_generic_resume()
bus_generic_resume()
bus_generic_resume()
bus_generic_resume()
apm_resume()
apm_processevent()
apm_do_suspend()
apm_timeout()
softclock()
ithread_loop()
fork_exit()
fork_trampoline()
_mtx_lock_flags+0x43 corresponds to the compare of the line
KASSERT(m->mtx_object.lo_class == &lock_class_mtx_sleep, ....
in kern_mutex.c. It looks like m == NULL.
I can't get any more information sadly, again the machine hung while
trying to reset ther ATA channel for the dump.
Gavin
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