linux-kernel - Re: INFO: rcu detected stall in exit

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Date:   Mon, 09 Nov 2020 03:03:05 -0800
From:   syzbot <syzbot+1a14a0f8ce1a06d4415f@...kaller.appspotmail.com>
To:     a@...table.cc, b.a.t.m.a.n@...ts.open-mesh.org,
        davem@...emloft.net, dhowells@...hat.com, fweisbec@...il.com,
        linux-afs@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, mareklindner@...mailbox.ch,
        mike.kravetz@...cle.com, mingo@...nel.org, netdev@...r.kernel.org,
        sw@...onwunderlich.de, syzkaller-bugs@...glegroups.com,
        tglx@...utronix.de, viro@...iv.linux.org.uk
Subject: Re: INFO: rcu detected stall in exit_group

syzbot suspects this issue was fixed by commit:

commit 1d0e850a49a5b56f8f3cb51e74a11e2fedb96be6
Author: David Howells <dhowells@...hat.com>
Date:   Fri Oct 16 12:21:14 2020 +0000

    afs: Fix cell removal

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14b65c3a500000
start commit:   34d4ddd3 Merge tag 'linux-kselftest-5.9-rc5' of git://git...
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=a9075b36a6ae26c9
dashboard link: https://syzkaller.appspot.com/bug?extid=1a14a0f8ce1a06d4415f
userspace arch: i386
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10c6642d900000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=132d00fd900000

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

#syz fix: afs: Fix cell removal

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