From: Zefan Li <lizefan@huawei.com>
To: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>, Tejun Heo <tj@kernel.org>,
<roman.penyaev@profitbricks.com>,
LKML <linux-kernel@vger.kernel.org>,
"Eric W. Biederman" <ebiederm@xmission.com>, <jweiner@fb.com>,
Andrew Morton <akpm@linux-foundation.org>,
syzkaller <syzkaller@googlegroups.com>
Subject: Re: lib, fs, cgroup: WARNING in percpu_ref_kill_and_confirm
Date: Thu, 1 Jun 2017 09:07:31 +0800 [thread overview]
Message-ID: <592F68D3.9050005@huawei.com> (raw)
In-Reply-To: <CAG_fn=XXna4GT2VTqtO1VNy1g82e4CE3K-jHXoQv75JWXBJt0A@mail.gmail.com>
On 2017/5/31 22:08, Alexander Potapenko wrote:
> On Fri, Mar 24, 2017 at 4:18 AM, Zefan Li <lizefan@huawei.com> wrote:
>> On 2017/3/23 22:04, Dmitry Vyukov wrote:
>>> Hello,
>>>
>>> The following program triggers WARNING in percpu_ref_kill_and_confirm:
>>> https://gist.githubusercontent.com/dvyukov/bcfcef3d6b24b9fd841b88ee20c14d4b/raw/a54aeeb09ad1e0659b0ed87ef5efc4480ab2536f/gistfile1.txt
>>>
>>
>> The bug can be triggered immediately. I'll look into it. Thanks!
> Hi Zefan,
>
> Have you had a chance to look into this bug?
> It's still reproducible for me with KMSAN.
But I already fixed it..
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bfb0b80db5f9dca5ac0a5fd0edb765ee555e5a8e
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9732adc5d6520238223df16630f1f8cad2269317
prev parent reply other threads:[~2017-06-01 1:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-23 14:04 lib, fs, cgroup: WARNING in percpu_ref_kill_and_confirm Dmitry Vyukov
2017-03-24 3:18 ` Zefan Li
2017-05-31 14:08 ` Alexander Potapenko
2017-06-01 1:07 ` Zefan Li [this message]
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