linux-kernel - Re: [syzbot] [ext4?] possible deadlock in dquot

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Message-ID: <0000000000003656ed05fe1d0fa5@google.com>
Date:   Wed, 14 Jun 2023 13:47:26 -0700
From:   syzbot <syzbot+70ff52e51b7e7714db8a@...kaller.appspotmail.com>
To:     adilger.kernel@...ger.ca, boqun.feng@...il.com, jack@...e.com,
        linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, paulmck@...nel.org,
        peterz@...radead.org, syzkaller-bugs@...glegroups.com,
        tytso@....edu
Subject: Re: [syzbot] [ext4?] possible deadlock in dquot_commit (2)

syzbot suspects this issue was fixed by commit:

commit f0f44752f5f61ee4e3bd88ae033fdb888320aafe
Author: Boqun Feng <boqun.feng@...il.com>
Date:   Fri Jan 13 06:59:54 2023 +0000

    rcu: Annotate SRCU's update-side lockdep dependencies

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1355576f280000
start commit:   ab072681eabe Merge tag 'irq_urgent_for_v6.2_rc6' of git://..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=c8d5c2ee6c2bd4b8
dashboard link: https://syzkaller.appspot.com/bug?extid=70ff52e51b7e7714db8a
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11436221480000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15133749480000

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

#syz fix: rcu: Annotate SRCU's update-side lockdep dependencies

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