linux-kernel - Re: [PATCH] kselftests: cgroup: Avoid the reuse of fd after it is deallocated

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Message-ID: <20191112153515.GE4163745@devbig004.ftw2.facebook.com>
Date:   Tue, 12 Nov 2019 07:35:15 -0800
From:   Tejun Heo <tj@...nel.org>
To:     Hewenliang <hewenliang4@...wei.com>
Cc:     shuah@...nel.org, guro@...com, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kselftests: cgroup: Avoid the reuse of fd after it is
 deallocated

On Mon, Nov 11, 2019 at 09:16:55PM -0500, Hewenliang wrote:
> It is necessary to set fd to -1 when inotify_add_watch() fails in
> cg_prepare_for_wait. Otherwise the fd which has been closed in
> cg_prepare_for_wait may be misused in other functions such as
> cg_enter_and_wait_for_frozen and cg_freeze_wait.
> 
> Fixes: 5313bfe425c8 ("selftests: cgroup: add freezer controller self-tests")
> Signed-off-by: Hewenliang <hewenliang4@...wei.com>

Applied to cgroup/for-5.5.

Thanks.

-- 
tejun