linux-kernel - Re: linux-next: BUG: unable to handle kernel NULL pointer dereference in cfq_print_leaf

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Date:	Fri, 19 Jun 2015 23:26:50 +0300
From:	Andrey Wagin <avagin@...il.com>
To:	Jens Axboe <axboe@...nel.dk>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Arianna Avanzini <avanzini.arianna@...il.com>
Subject: Re: linux-next: BUG: unable to handle kernel NULL pointer dereference
 in cfq_print_leaf_weight()

2015-06-19 19:24 GMT+03:00 Jens Axboe <axboe@...nel.dk>:
> On 06/17/2015 03:55 PM, Andrey Wagin wrote:
>>
>> Hi All,
>>
>> I executed CRIU tests on the 4.1.0-rc8-next-20150617 kernel and met
>> this bug. Maybe it will be interested for someone to look at it.
>
>
> This should fix it:
>
> http://git.kernel.dk/cgit/linux-block/commit/?h=for-4.2/core&id=9470e4a693db84bee7becbba8de01af02bb23c9f

Hi Jens,

Thank you for the path. I think we need to fix __cfq_set_weight and
__cfq_set_weight_device too.

>
> --
> Jens Axboe
>
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