syzbot has bisected this bug to: commit 2035f3ff8eaa29cfb5c8e2160b0f6e85eeb21a95 Author: Florian Westphal <fw at strlen.de> Date: Mon Jan 21 20:54:36 2019 +0000 netfilter: ebtables: compat: un-break 32bit setsockopt when no rules are present bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1462834d200000 start commit: 8a61716f Merge tag 'ceph-for-5.0-rc8' of git://github.com/.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1662834d200000 console output: https://syzkaller.appspot.com/x/log.txt?x=1262834d200000 kernel config: https://syzkaller.appspot.com/x/.config?x=7132344728e7ec3f dashboard link: https://syzkaller.appspot.com/bug?extid=276ddebab3382bbf72db userspace arch: i386 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=140c0914c00000 Reported-by: syzbot+276ddebab3382bbf72db at syzkaller.appspotmail.com Fixes: 2035f3ff8eaa ("netfilter: ebtables: compat: un-break 32bit setsockopt when no rules are present") For information about bisection process see: https://goo.gl/tpsmEJ#bisection