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Re: futex: use-after-free in futex_wait_requeue_pi

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: futex: use-after-free in futex_wait_requeue_pi
Date 2017-03-13 09:10 +0100
Message-ID <tktdg-61U-13@gated-at.bofh.it> (permalink)
References <tjxiW-7Ku-29@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Fri, Mar 10, 2017 at 07:10:30PM +0100, Dmitry Vyukov wrote:
> Hello,
> 
> The following program triggers use-after-free in futex_wait_requeue_pi:
> https://gist.githubusercontent.com/dvyukov/42e596153263793b75ad587c8d0626b0/raw/35461a6c1b0a4163a67191ff5d35202f35ecbf44/gistfile1.txt

There's a known use-after-free there, see:

http://lkml.kernel.org/r/20170304093558.801744246@infradead.org

I've not woken up enough; or actually looked at your report to see if
its the same.

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Thread

futex: use-after-free in futex_wait_requeue_pi Dmitry Vyukov <dvyukov@google.com> - 2017-03-10 19:20 +0100
  Re: futex: use-after-free in futex_wait_requeue_pi Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2017-03-10 19:40 +0100
    Re: futex: use-after-free in futex_wait_requeue_pi Dmitry Vyukov <dvyukov@google.com> - 2017-03-10 19:40 +0100
  Re: futex: use-after-free in futex_wait_requeue_pi Peter Zijlstra <peterz@infradead.org> - 2017-03-13 09:10 +0100
    Re: futex: use-after-free in futex_wait_requeue_pi Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2017-03-13 11:10 +0100
      Re: futex: use-after-free in futex_wait_requeue_pi Dmitry Vyukov <dvyukov@google.com> - 2017-03-13 11:10 +0100

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