syzbot has bisected this bug to: commit f547fac624be53ad8b07e9ebca7654a7827ba61b Author: Sabrina Dubroca <sd@xxxxxxxxxxxxxxx> Date: Fri Oct 12 14:22:47 2018 +0000 ipv6: rate-limit probes for neighbourless routes bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17affd1b200000 start commit: f547fac6 ipv6: rate-limit probes for neighbourless routes git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=146ffd1b200000 console output: https://syzkaller.appspot.com/x/log.txt?x=106ffd1b200000 kernel config: https://syzkaller.appspot.com/x/.config?x=963b24abf3f7c2d8 dashboard link: https://syzkaller.appspot.com/bug?extid=a50c7541a4a55cd49b02 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12097f03400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10b55ac5400000 Reported-by: syzbot+a50c7541a4a55cd49b02@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: f547fac624be ("ipv6: rate-limit probes for neighbourless routes") For information about bisection process see: https://goo.gl/tpsmEJ#bisection