linux-kernel - Re: INFO: task hung in tcf_ife

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Message-ID: <000000000000fcd01005ae6a77e7@google.com>
Date:   Thu, 03 Sep 2020 08:33:06 -0700
From:   syzbot <syzbot+80e32b5d1f9923f8ace6@...kaller.appspotmail.com>
To:     davem@...emloft.net, eric.dumazet@...il.com, jhs@...atatu.com,
        jiri@...lanox.com, jiri@...nulli.us, kuba@...nel.org,
        linux-kernel@...r.kernel.org, marcelo.leitner@...il.com,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        vladbu@...lanox.com, xiyou.wangcong@...il.com
Subject: Re: INFO: task hung in tcf_ife_init

syzbot has bisected this issue to:

commit 4e8ddd7f1758ca4ddd0c1f7cf3e66fce736241d2
Author: Vlad Buslov <vladbu@...lanox.com>
Date:   Thu Jul 5 14:24:30 2018 +0000

    net: sched: don't release reference on action overwrite

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14ae08e9900000
start commit:   1996cf46 net: bcmgenet: fix mask check in bcmgenet_validat..
git tree:       net
final oops:     https://syzkaller.appspot.com/x/report.txt?x=16ae08e9900000
console output: https://syzkaller.appspot.com/x/log.txt?x=12ae08e9900000
kernel config:  https://syzkaller.appspot.com/x/.config?x=a0437fdd630bee11
dashboard link: https://syzkaller.appspot.com/bug?extid=80e32b5d1f9923f8ace6
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=161678e1900000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14f826d1900000

Reported-by: syzbot+80e32b5d1f9923f8ace6@...kaller.appspotmail.com
Fixes: 4e8ddd7f1758 ("net: sched: don't release reference on action overwrite")

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