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Date: Wed, 11 Nov 2020 14:39:34 +0100
From: Dmitry Vyukov <dvyukov@...gle.com>
To: syzbot <syzbot+2a89b1fb6539ff150c16@...kaller.appspotmail.com>,
syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: INFO: rcu detected stall in do_swap_page
On Thu, Nov 7, 2019 at 3:25 PM syzbot
<syzbot+2a89b1fb6539ff150c16@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this bug was fixed by commit:
>
> commit 32aaf0553df99cc4314f6e9f43216cd83afc6c20
> Author: Pengfei Li <lpf.vector@...il.com>
> Date: Mon Sep 23 22:36:58 2019 +0000
>
> mm/compaction.c: remove unnecessary zone parameter in
> isolate_migratepages()
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=159dcaaae00000
> start commit: c6dd78fc Merge branch 'x86-urgent-for-linus' of git://git...
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=3c8985c08e1f9727
> dashboard link: https://syzkaller.appspot.com/bug?extid=2a89b1fb6539ff150c16
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1456f9d0600000
>
> If the result looks correct, please mark the bug fixed by replying with:
>
> #syz fix: mm/compaction.c: remove unnecessary zone parameter in
> isolate_migratepages()
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
This does not look like the right commit. The bug happened only twice
long time ago, so:
#syz invalid
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