Re: WARNING in untrack_pfn

From: Pavel Machek
Date: Tue Aug 13 2019 - 07:31:59 EST


On Tue 2019-08-13 03:56:06, syzbot wrote:
> syzbot has found a reproducer for the following crash on:

Unsigned emails are ugly. Could the "From: " be modified to include
name of responsible person?

> HEAD commit: d45331b0 Linux 5.3-rc4
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=16130d4a600000
> kernel config: https://syzkaller.appspot.com/x/.config?x=3d7eaed8496da4da
> dashboard link: https://syzkaller.appspot.com/bug?extid=e1a4f80c370d2381e49f
> compiler: clang version 9.0.0 (/home/glider/llvm/clang
> 80fee25776c2fb61e74c1ecb1a523375c2500b69)
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=131f8e0e600000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10e1a1ee600000
>
> The bug was bisected to:
>
> commit c68729119f4d2993bec3c9cb999ad76de5aeddba
> Author: Julia Lawall <Julia.Lawall@xxxxxxx>
> Date: Sat Jul 15 09:58:19 2017 +0000
>
> leds: tlc591xx: add missing of_node_put

And this looks like mistake. I don't think this commit is causing the
crash. Can you somehow verify?

Pavel

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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