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From: Jens Axboe <jens.axboe@oracle.com>
To: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Andy Whitcroft <apw@shadowen.org>
Subject: Re: [BUG] 2.6.23-git18 Kernel oops in sg helpers
Date: Tue, 23 Oct 2007 20:44:20 +0200	[thread overview]
Message-ID: <20071023184419.GD14671@kernel.dk> (raw)
In-Reply-To: <471E110C.20404@linux.vnet.ibm.com>

On Tue, Oct 23 2007, Kamalesh Babulal wrote:
> Hi,
> 
> Kernel oops is triggered while running fsx-linux test, followed by cpu softlock
> over the AMD box
> 
> Unable to handle kernel NULL pointer dereference at 0000000000000018 RIP: 
>  [<ffffffff8021f2f6>] gart_map_sg+0x26c/0x406
> PGD 10185b067 PUD 10075b067 PMD 0 
> Oops: 0002 [1] SMP 
> CPU 3 
> Modules linked in:
> Pid: 18676, comm: fsx-linux Not tainted 2.6.23-git18-autokern1 #1
> RIP: 0010:[<ffffffff8021f2f6>]  [<ffffffff8021f2f6>] gart_map_sg+0x26c/0x406
> RSP: 0000:ffff810181edf948  EFLAGS: 00010002

Can you check where gart_map_sg+0x26c is at? Make sure you have
CONFIG_DEBUG_INFO defined, then do:

$ gdb vmlinux
$ l *gart_map_sg+0x26c

Thanks!

-- 
Jens Axboe


  reply	other threads:[~2007-10-23 18:44 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-23 15:19 [BUG] 2.6.23-git18 Kernel oops in sg helpers Kamalesh Babulal
2007-10-23 18:44 ` Jens Axboe [this message]
2007-10-24 11:54   ` Andy Whitcroft
2007-10-24 12:25     ` Jens Axboe
2007-10-24 12:40     ` FUJITA Tomonori
2007-10-24 16:08       ` Kamalesh Babulal
2007-10-24 18:06         ` Jens Axboe
2007-10-24 22:09         ` FUJITA Tomonori
2007-10-25  5:34           ` Jens Axboe
2007-10-23 22:42 ` FUJITA Tomonori
2007-10-24  8:32   ` Jens Axboe
2007-10-24  8:50     ` Benny Halevy
2007-10-25  8:53       ` Benny Halevy

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