From: Thomas Gleixner <tglx@linutronix.de>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
syzkaller <syzkaller@googlegroups.com>
Subject: Re: timerfd: use-after-free in timerfd_remove_cancel
Date: Tue, 31 Jan 2017 12:45:07 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.20.1701311244370.3457@nanos> (raw)
In-Reply-To: <alpine.DEB.2.20.1701311231390.3457@nanos>
On Tue, 31 Jan 2017, Thomas Gleixner wrote:
> On Mon, 30 Jan 2017, Dmitry Vyukov wrote:
> >
> > Seems that ctx->might_cancel is racy.
>
> Yes, it is. Fix below.
And the fix is racy as well. Darn, we really need to lock the context to
avoid that mess.
next prev parent reply other threads:[~2017-01-31 11:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-30 18:41 Dmitry Vyukov
2017-01-31 2:06 ` Mateusz Guzik
2017-01-31 8:19 ` Dmitry Vyukov
2017-01-31 11:33 ` Thomas Gleixner
2017-01-31 11:45 ` Thomas Gleixner [this message]
2017-01-31 12:09 ` Dmitry Vyukov
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