linux-kernel - Re: WARNING: refcount bug in igmp_start

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Date:   Sat, 09 Nov 2019 06:32:01 -0800
From:   syzbot <syzbot+e28037ac1c96d2a86e89@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, ap420073@...il.com, ast@...nel.org,
        benjamin.gaignard@...aro.org, cmetcalf@...hip.com,
        daniel.vetter@...ll.ch, daniel.vetter@...el.com,
        daniel@...earbox.net, davem@...emloft.net, ecree@...arflare.com,
        edumazet@...gle.com, f.fainelli@...il.com, idosch@...lanox.com,
        jiri@...lanox.com, kuznet@....inr.ac.ru,
        linux-kernel@...r.kernel.org, mcroce@...hat.com,
        netdev@...r.kernel.org, pabeni@...hat.com,
        paulmck@...ux.vnet.ibm.com, peterz@...radead.org,
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        vincent.abriou@...com, xiangxia.m.yue@...il.com,
        xiyou.wangcong@...il.com, yoshfuji@...ux-ipv6.org
Subject: Re: WARNING: refcount bug in igmp_start_timer

syzbot suspects this bug was fixed by commit:

commit 323ebb61e32b478e2432c5a3cbf9e2ca678a9609
Author: Edward Cree <ecree@...arflare.com>
Date:   Tue Aug 6 13:53:55 2019 +0000

     net: use listified RX for handling GRO_NORMAL skbs

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15a5452ce00000
start commit:   ae596de1 Compiler Attributes: naked can be shared
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=5fa12be50bca08d8
dashboard link: https://syzkaller.appspot.com/bug?extid=e28037ac1c96d2a86e89
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=178537da400000

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

#syz fix: net: use listified RX for handling GRO_NORMAL skbs

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