linux-kernel - Re: possible deadlock in perf_trace

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Date:   Tue, 23 Jan 2018 08:37:49 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        syzbot 
        <syzbot+c9695f0404c72c8f0b7abbac660d986af9008fc5@...kaller.appspotmail.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>, syzkaller-bugs@...glegroups.com
Subject: Re: possible deadlock in perf_trace_destroy (2)

On Tue, Jan 23, 2018 at 12:19 AM, Peter Zijlstra <peterz@...radead.org> wrote:
> On Mon, Jan 22, 2018 at 05:20:13PM -0500, Steven Rostedt wrote:
>>
>> Peter,
>>
>> Isn't this the same as what you mentioned (and had a hack patch for)
>> before?
>>
>>  http://lkml.kernel.org/r/20180109133651.GB2369@hirez.programming.kicks-ass.net
>>
>
> Looks like it. Just haven't managed to get those patches merged. I'll
> try and get that sorted tomorrow. Thanks for the reminder.

Please add the following tag to the commit:
Reported-by: syzbot+c9695f0404c72c8f0b7abbac660d986af9008fc5@...kaller.appspotmail.com
It will help syzbot understand when the bug is fixed.