linux-kernel - Re: twl4030 irq crashes

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Message-ID: <AANLkTik++Rb-x+aLtKv83USqSn8tQ4iyfSyWCNgfM+nO@mail.gmail.com>
Date:	Thu, 7 Oct 2010 02:27:45 +0300
From:	Grazvydas Ignotas <notasas@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org
Subject: Re: twl4030 irq crashes

On Thu, Oct 7, 2010 at 1:59 AM, Thomas Gleixner <tglx@...utronix.de> wrote:
> On Thu, 7 Oct 2010, Grazvydas Ignotas wrote:
>
>> Hello,
>>
>> I've pulled today's (20101006) linux-next and twl4030 started crashing
>> on certain interrupts. twl4030 irq code hasn't changed so it's
>> probably genirq's fault:
>>
>> [    0.889739] Unable to handle kernel NULL pointer dereference at
>> virtual address 00000000
>> [    0.898193] pgd = c0004000
>> [    0.901000] [00000000] *pgd=00000000
>> [    0.904754] Internal error: Oops: 80000005 [#1]
>> [    0.909484] last sysfs file:
>> [    0.912567] Modules linked in:
>> [    0.915771] CPU: 0    Not tainted
>> (2.6.36-rc6-next-20101006-00001-g766a681-dirty #205)
>> [    0.924133] PC is at 0x0
>> [    0.926788] LR is at handle_edge_irq+0x84/0x14c
>
> Can you please decode that line with
>
> addr2line -e vmlinux c0077244

kernel/irq/chip.c:725
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