From mboxrd@z Thu Jan  1 00:00:00 1970
From: linux@arm.linux.org.uk (Russell King - ARM Linux)
Date: Mon, 28 Jun 2010 10:00:36 +0100
Subject: soft lockup - CPU#0 stuck for 61s! problem
In-Reply-To: <AANLkTimqNv37LkJDyKJp9PnJapXH4naINhx-T2ysQi4D@mail.gmail.com>
References: <AANLkTimqNv37LkJDyKJp9PnJapXH4naINhx-T2ysQi4D@mail.gmail.com>
Message-ID: <20100628090036.GA28510@n2100.arm.linux.org.uk>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Mon, Jun 28, 2010 at 11:25:04AM +0530, Harishkumar V wrote:
> BUG: soft lockup - CPU#0 stuck for 61s! [linphone-3:764]
> Modules linked in:
> 
> Pid: 764, comm:           linphone-3
> CPU: 0    Not tainted  (2.6.28-rc9 #14)
> PC is at handle_IRQ_event+0x28/0x74
> LR is at handle_level_irq+0x94/0xec

That suggests a stuck IRQ.

> pc : [<c008cc30>]    lr : [<c008e18c>]    psr: 48000113
> sp : c7eede90  ip : c7eedeb0  fp : c7eedeac
> r10: 0000001d  r9 : c0638ba8  r8 : 00000000
> r7 : 0000005c  r6 : 00000000  r5 : 0000005c  r4 : c7a1b360
> r3 : 00000000  r2 : 0000006e  r1 : c7a1b360  r0 : 0000005c

which might be irq 92.

> Exception stack(0xc7eede48 to 0xc7eede90)
> de40:                   0000005c c7a1b360 0000006e 00000000 c7a1b360
> 0000005c
> de60: 00000000 0000005c 00000000 c0638ba8 0000001d c7eedeac c7eedeb0
> c7eede90
> de80: c008e18c c008cc30 48000113 ffffffff
>  r5:d8200000 r4:ffffffff

These messages should continue - and contain some further useful
information to confirm the stuck IRQ.