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Date:   Wed, 22 May 2019 15:58:27 -0700
From:   Linus Torvalds <>
To:     syzbot <>
Cc:     Alexei Starovoitov <>,,
        Daniel Borkmann <>,
        David Miller <>,,,
        Linux List Kernel Mailing <>,
        Netdev <>,,
        syzkaller-bugs <>,
Subject: Re: KASAN: use-after-free Read in sk_psock_unlink

On Wed, May 22, 2019 at 2:49 PM syzbot
<> wrote:
> syzbot has bisected this bug to:
> commit 48a3c64b4649 ("Merge tag 'drm-fixes-2018-06-29' of  git://")

That looks very unlikely indeed. I strongly suspect your bisection is broken.

Looking at the bisection log, the problem sometimes happens only once
out of the ten tries. Presumably it then happened zero times a couple
of times, and the bisection went off into the weeds.

Any possibility of re-doing the bisection (the ones marked "bad" are
clearly bad, so you don't need to redo it _all_) with many more runs
for each test point?


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