Re: [syzbot] [net?] WARNING in ip6_mr_output

[syzbot]

syzbot has bisected this issue to:

commit 96e8f5a9fe2d91b9f9eb8b45cc13ce1ca6a8af82
Author: Petr Machata <petrm@xxxxxxxxxx>
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@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 96e8f5a9fe2d ("net: ipv6: Add ip6_mr_output()")

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