From: Jens Axboe <axboe@fb.com>
To: kernel test robot <ying.huang@linux.intel.com>
Cc: <lkp@01.org>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [lkp] [blk] 1131f64d74: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
Date: Fri, 1 Apr 2016 08:08:06 -0600 [thread overview]
Message-ID: <56FE80C6.3090206@fb.com> (raw)
In-Reply-To: <874mblhgcb.fsf@yhuang-dev.intel.com>
On 04/01/2016 02:40 AM, kernel test robot wrote:
> FYI, we noticed the below changes on
>
> https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git wb-buf-throttle
> commit 1131f64d74958d495d8a6d5f9b981e86ed3beb7a ("blk-mq: don't throttle for virtual devices")
>
>
> +------------------------------------------+------------+------------+
> | | f21fb0e42c | 1131f64d74 |
> +------------------------------------------+------------+------------+
> | boot_successes | 6 | 0 |
> | boot_failures | 0 | 6 |
> | BUG:unable_to_handle_kernel | 0 | 6 |
> | Oops | 0 | 6 |
> | RIP:blk_wb_wait | 0 | 6 |
> | Kernel_panic-not_syncing:Fatal_exception | 0 | 6 |
> | backtrace:init | 0 | 6 |
> | backtrace:kernel_init_freeable | 0 | 6 |
> +------------------------------------------+------------+------------+
>
>
>
> [ 8.897469] FDC 0 is a S82078B
> [ 8.984074] brd: module loaded
> [ 9.030737] loop: module loaded
> [ 9.045718] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
> [ 9.048069] IP: [<ffffffff815336b0>] blk_wb_wait+0x5/0x174
Fixed:
http://git.kernel.dk/cgit/linux-block/commit/?h=wb-buf-throttle&id=811ea72827a70139a0520ec07b39d6a4baa62de1
it was introduced by this commit:
http://git.kernel.dk/cgit/linux-block/commit/?h=wb-buf-throttle&id=1131f64d74958d495d8a6d5f9b981e86ed3beb7a
and both will be folded for the next release.
--
Jens Axboe
prev parent reply other threads:[~2016-04-01 14:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-01 8:40 [lkp] [blk] 1131f64d74: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 kernel test robot
2016-04-01 14:08 ` Jens Axboe [this message]
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