linux-kernel - Re: [syzbot] WARNING in trc_read_check

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Message-ID: <000000000000b7e3ee05d21bd19d@google.com>
Date:   Wed, 01 Dec 2021 12:50:07 -0800
From:   syzbot <syzbot+fe9d8c955bd1d0f02dc1@...kaller.appspotmail.com>
To:     bigeasy@...utronix.de, jgross@...e.com, jiangshanlai@...il.com,
        joel@...lfernandes.org, josh@...htriplett.org,
        linux-kernel@...r.kernel.org, mathieu.desnoyers@...icios.com,
        mingo@...nel.org, namit@...are.com, netdev@...r.kernel.org,
        paulmck@...nel.org, peterz@...radead.org, rcu@...r.kernel.org,
        rdunlap@...radead.org, rostedt@...dmis.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] WARNING in trc_read_check_handler

syzbot suspects this issue was fixed by commit:

commit 96017bf9039763a2e02dcc6adaa18592cd73a39d
Author: Paul E. McKenney <paulmck@...nel.org>
Date:   Wed Jul 28 17:53:41 2021 +0000

    rcu-tasks: Simplify trc_read_check_handler() atomic operations

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1281d89db00000
start commit:   5319255b8df9 selftests/bpf: Skip verifier tests that fail ..
git tree:       bpf-next
kernel config:  https://syzkaller.appspot.com/x/.config?x=9290a409049988d4
dashboard link: https://syzkaller.appspot.com/bug?extid=fe9d8c955bd1d0f02dc1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14990477300000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=105ebd84b00000

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

#syz fix: rcu-tasks: Simplify trc_read_check_handler() atomic operations

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