Date: Tue, 1 Dec 2009 21:10:03 GMT From: Tarick <tungan@ukr.net> To: freebsd-acpi@FreeBSD.org Subject: Re: kern/140979: [acpi] [panic] Kernel panic (fatal trap 12: page fault when in kernel mode) on FreeBSD 8.0 with ACPI because of "ec" sub-device Message-ID: <200912012110.nB1LA3bB048159@freefall.freebsd.org>
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The following reply was made to PR kern/140979; it has been noted by GNATS.
From: Tarick <tungan@ukr.net>
To: Andriy Gapon <avg@icyb.net.ua>
Cc: bug-followup@FreeBSD.org
Subject: Re: kern/140979: [acpi] [panic] Kernel panic (fatal trap 12: page
fault when in kernel mode) on FreeBSD 8.0 with ACPI because of "ec"
sub-device
Date: Tue, 01 Dec 2009 21:39:09 +0200
Sure, as I understand this means booting with debug.acpi.disabled="ec"
line in /boot/loader.conf. I use this setting constantly right now.
But I recompiled kernel recently, and the instruction pointer address
changed to 0xffffffff801bfe20. Here is result with this address, I hope
this will help:
_______________________________________________________________
~# kgdb /boot/kernel/kernel /dev/mem
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "amd64-marcel-freebsd"...
Reading symbols from /boot/kernel/sem.ko...Reading symbols
from /boot/kernel/sem.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/sem.ko
Reading symbols from /usr/local/lib/oss/modules/osscore.ko...done.
Loaded symbols for /usr/local/lib/oss/modules/osscore.ko
Reading symbols from /usr/local/lib/oss/modules/oss_hdaudio.ko...done.
Loaded symbols for /usr/local/lib/oss/modules/oss_hdaudio.ko
Reading symbols from /usr/local/modules/rtc.ko...done.
Loaded symbols for /usr/local/modules/rtc.ko
Reading symbols from /boot/kernel/ng_pppoe.ko...Reading symbols
from /boot/kernel/ng_pppoe.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/ng_pppoe.ko
#0 sched_switch (td=0xffffffff80962140, newtd=Variable "newtd" is not
available.
) at /usr/src/sys/kern/sched_ule.c:1864
1864 cpuid = PCPU_GET(cpuid);
(kgdb) info line *0xffffffff801bfe20
Line 538 of "/usr/src/sys/contrib/dev/acpica/executer/exmutex.c"
starts at address 0xffffffff801bfe20 <AcpiExReleaseMutex+544> and
ends at 0xffffffff801bfe25 <AcpiExReleaseMutex+549>.
(kgdb)
__________________________________________________________
-----Original Message-----
From: Andriy Gapon <avg@icyb.net.ua>
To: Tarick <tungan@ukr.net>
Cc: bug-followup@FreeBSD.org
Subject: Re: kern/140979: [acpi] [panic] Kernel panic (fatal trap 12:
page fault when in kernel mode) on FreeBSD 8.0 with ACPI because of "ec"
sub-device
Date: Tue, 01 Dec 2009 15:48:38 +0200
on 30/11/2009 21:38 Tarick said the following:
> Unfortunately I can't save core dump despite configured debugging
> settings, system just doesn't see it in swap, probably because the crash
> occurs before swap is configured.
> What other options do I have?
Could you please boot with ec disabled (via the hint) and do the following?
In shell:
$ kgdb /boot/kernel/kernel /dev/mem
In kgdb:
(kgdb) info line *0xffffffff001ccfa0
And send back the output of the last command.
Thanks.
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