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Subject: Re: mm, we use rcu access task_struct in mm_match_cgroup(), but not
 use rcu free in free_task_struct()
References: <5924E4A7.7000601@huawei.com> <59250EA3.60905@huawei.com>
From: Vlastimil Babka <vbabka@suse.cz>
Message-ID: <263518b9-5a39-1af9-ac9e-055da3384aef@suse.cz>
Date: Wed, 24 May 2017 09:49:18 +0200
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To: Xishi Qiu <qiuxishi@huawei.com>, Michal Hocko <mhocko@kernel.org>, Mel Gorman <mgorman@techsingularity.net>, Hugh Dickins <hughd@google.com>, Minchan Kim <minchan@kernel.org>, "wencongyang (A)" <wencongyang2@huawei.com>, Johannes Weiner <hannes@cmpxchg.org>, Dmitry Vyukov <dvyukov@google.com>, zhong jiang <zhongjiang@huawei.com>
Cc: Linux MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>

On 05/24/2017 06:40 AM, Xishi Qiu wrote:
> On 2017/5/24 9:40, Xishi Qiu wrote:
> 
>> Hi, I find we use rcu access task_struct in mm_match_cgroup(), but not use
>> rcu free in free_task_struct(), is it right?
>>
>> Here is the backtrace.

Can you post the whole oops, including kernel version etc? Is it the
same 3.10 RH kernel as in the other report?

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