linux-kernel - Re: possible deadlock in lock

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Date:   Sat, 02 May 2020 03:07:03 -0700
From:   syzbot <syzbot+985c8a3c7f3668d31a49@...kaller.appspotmail.com>
To:     adobriyan@...il.com, akpm@...ux-foundation.org, avagin@...il.com,
        bernd.edlinger@...mail.de, casey@...aufler-ca.com,
        christian@...uner.io, ebiederm@...ssion.com, guro@...com,
        kent.overstreet@...il.com, khlebnikov@...dex-team.ru,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        mhocko@...e.com, shakeelb@...gle.com,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de
Subject: Re: possible deadlock in lock_trace (3)

syzbot suspects this bug was fixed by commit:

commit 2db9dbf71bf98d02a0bf33e798e5bfd2a9944696
Author: Bernd Edlinger <bernd.edlinger@...mail.de>
Date:   Fri Mar 20 20:27:24 2020 +0000

    proc: Use new infrastructure to fix deadlocks in execve

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17222ec4100000
start commit:   a42a7bb6 Merge tag 'irq-urgent-2020-03-15' of git://git.ke..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=c2e311dba9a02ba9
dashboard link: https://syzkaller.appspot.com/bug?extid=985c8a3c7f3668d31a49
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1185f753e00000

If the result looks correct, please mark the bug fixed by replying with:

#syz fix: proc: Use new infrastructure to fix deadlocks in execve

For information about bisection process see: https://goo.gl/tpsmEJ#bisection