syzbot


BUG: corrupted list in nft_obj_del
Status: fixed on 2020/02/18 14:31
Reported-by: syzbot+6ca99af7e70e298bd09d@syzkaller.appspotmail.com
Fix commit: 335178d5429c netfilter: nf_tables: fix flowtable list del corruption
First crash: 566d, last: 564d

Cause bisection: introduced by (bisect log) :
commit 20651cefd25ffa77a15cab5853b175a6dc975ec2
Author: Florian Westphal <fw@strlen.de>
Date: Tue Jan 9 13:30:48 2018 +0000

  netfilter: x_tables: unbreak module auto loading

Crash: general protection fault in get_info (log)
Repro: C syz .config

Sample crash report:

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2020/01/16 05:03 upstream 51d69817519f f9b69507 .config log report syz C
ci-upstream-kasan-gce-root 2020/01/16 03:12 upstream 51d69817519f f9b69507 .config log report syz C
ci-upstream-kasan-gce 2020/01/16 01:24 upstream 51d69817519f f9b69507 .config log report syz C
ci-upstream-kasan-gce-386 2020/01/16 05:08 upstream 51d69817519f f9b69507 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/01/16 00:09 net 8b792f84c637 f9b69507 .config log report syz C
ci-upstream-net-kasan-gce 2020/01/16 01:17 net-next 4e2fa6b90275 f9b69507 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/01/18 05:20 linux-next 2747d5fdab78 3de7aabb .config log report syz C