linux-kernel - Re: [syzbot] [net?] WARNING in ip6_mr

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Message-ID: <685f7a1a.a70a0220.2f4de1.0007.GAE@google.com>
Date: Fri, 27 Jun 2025 22:14:02 -0700
From: syzbot <syzbot+0141c834e47059395621@...kaller.appspotmail.com>
To: bpoirier@...dia.com, davem@...emloft.net, dsahern@...nel.org, 
	edumazet@...gle.com, eric.dumazet@...il.com, horms@...nel.org, 
	idosch@...dia.com, kuba@...nel.org, kuniyu@...gle.com, 
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org, pabeni@...hat.com, 
	petrm@...dia.com, razor@...ckwall.org, roopa@...dia.com, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [net?] WARNING in ip6_mr_output

syzbot has bisected this issue to:

commit 96e8f5a9fe2d91b9f9eb8b45cc13ce1ca6a8af82
Author: Petr Machata <petrm@...dia.com>
Date:   Mon Jun 16 22:44:18 2025 +0000

    net: ipv6: Add ip6_mr_output()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13bcfb70580000
start commit:   5d4809e25903 Add linux-next specific files for 20250620
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=107cfb70580000
console output: https://syzkaller.appspot.com/x/log.txt?x=17bcfb70580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=58afc4b78b52b7e3
dashboard link: https://syzkaller.appspot.com/bug?extid=0141c834e47059395621
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=138a2dd4580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=171c5b0c580000

Reported-by: syzbot+0141c834e47059395621@...kaller.appspotmail.com
Fixes: 96e8f5a9fe2d ("net: ipv6: Add ip6_mr_output()")

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