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Date: Tue, 12 Dec 2017 15:00:37 +0100
From: Dmitry Vyukov <dvyukov@...gle.com>
To: Christoph Hellwig <hch@....de>
Cc: syzbot
<bot+8a9655dff1b0463b1f5eb8f45a81d652d08d428b@...kaller.appspotmail.com>,
LKML <linux-kernel@...r.kernel.org>,
Ingo Molnar <mingo@...hat.com>,
Peter Zijlstra <peterz@...radead.org>,
syzkaller-bugs@...glegroups.com
Subject: Re: mmots test error: WARNING in __wake_up_common
On Fri, Dec 8, 2017 at 7:05 PM, Dmitry Vyukov <dvyukov@...gle.com> wrote:
> On Fri, Dec 1, 2017 at 6:05 PM, Christoph Hellwig <hch@....de> wrote:
>> Ok, more epoll fun. We already have a discussion on it on lkml..
>
> Need to tell the bot what fixed it:
>
> #syz fix: epoll: use proper wake_up variant in ep_poll_callback
The right one seems to be:
#syz fix: epoll: use the waitqueue lock to protect ep->wq
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