From: Jens Axboe <axboe@kernel.dk>
To: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] blk-throttle: check stats_cpu before reading it from sysfs
Date: Wed, 18 Feb 2015 10:50:07 -0800 [thread overview]
Message-ID: <54E4DEDF.1010102@kernel.dk> (raw)
In-Reply-To: <1424114206-17504-1-git-send-email-cascardo@linux.vnet.ibm.com>
On 02/16/2015 11:16 AM, Thadeu Lima de Souza Cascardo wrote:
> When reading blkio.throttle.io_serviced in a recently created blkio
> cgroup, it's possible to race against the creation of a throttle policy,
> which delays the allocation of stats_cpu.
>
> Like other functions in the throttle code, just checking for a NULL
> stats_cpu prevents the following oops caused by that race.
Applied for this series, thanks.
--
Jens Axboe
prev parent reply other threads:[~2015-02-18 18:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-16 19:16 [PATCH] blk-throttle: check stats_cpu before reading it from sysfs Thadeu Lima de Souza Cascardo
2015-02-18 18:50 ` Jens Axboe [this message]
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