linux-kernel - Re: 3.7.5: Kernel panic on halt

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Message-ID: <CAKocOOPa8DDmy41L188K-yZ5FSnvWaF7kMu=A9xWg851FOLxmA@mail.gmail.com>
Date:	Mon, 4 Feb 2013 16:02:07 -0700
From:	Shuah Khan <shuahkhan@...il.com>
To:	Grant Coady <gcoady.lk@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 3.7.5: Kernel panic on halt

On Mon, Feb 4, 2013 at 3:18 PM, Grant Coady <gcoady.lk@...il.com> wrote:
> Hi there,
>
> I was running machine overnight on 12V battery test, with this simple
> kernel compile loop:
>
>   grant@...mini:~/linux/linux-3.7.5a$ while :; do make clean; make -j5; done
>
> Today it was time to shutdown the box ('halt' command) and recharge the battery.
>
> Snapshot of screen:
>
>   http://bugsplatter.id.au/misc/image/IMG_5627-kernel-panic-itxmini-2013-01-05.jpg
>
> Kernel .config and dmesg:
>
>   http://bugsplatter.id.au/kernel/boxen/itxmini/config-3.7.5a.gz
>   http://bugsplatter.id.au/kernel/boxen/itxmini/dmesg-3.7.5a.gz
>
> Box is Intel D510MO mobo with dual core HT Atom CPU with 2GB memory, 2GB
> swap (unused), Intel pro/100 NIC (disconnected), onboard PS/2 keyboard,
> ps/2 mouse, 1Gbps NIC, VGA monitor connected.
>
> What next?  Box rebooted normally.  Ha
>
> Thanks,
> Grant.

Will you be able to run gdb on your kernel to see where exactly it is
failing: If read the faulting address from the attached jpg correctly,
the following sequence should get us the failing source code line:

gdb vmlinux
x/10i run_timer_softirq+0xac
info line *disassaddr for run_timer_softirq+0xac

-- Shuah
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