syzbot


BUG: unable to handle kernel paging request in do_csum (2)
Status: fixed on 2020/02/18 14:31
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 6cd021a58c18 udp: segment looped gso packets correctly
First crash: 674d, last: 672d

Cause bisection: introduced by (bisect log) :
commit cf329aa42b6659204fee865bbce0ea20462552eb
Author: Paolo Abeni <pabeni@redhat.com>
Date: Wed Nov 7 11:38:33 2018 +0000

  udp: cope with UDP GRO packet misdirection

Crash: WARNING in skb_warn_bad_offload (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: unable to handle kernel paging request in do_csum C 11 1091d 1092d 12/22 fixed on 2019/03/06 07:43
linux-4.19 BUG: unable to handle kernel paging request in do_csum C done 1 99d 317d 1/1 fixed on 2021/09/21 12:35

Sample crash report:

Crashes (6):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2020/01/26 08:39 upstream 2821e26f3a0a f4e7270e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/01/25 21:56 upstream d5d359b0ac3f 2e95ab33 .config log report syz C
ci-upstream-kasan-gce 2020/01/24 11:30 upstream 4703d9119972 2e95ab33 .config log report syz C
ci-upstream-kasan-gce-386 2020/01/24 11:29 upstream 4703d9119972 2e95ab33 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/01/24 10:46 net 61678d28d4a4 2e95ab33 .config log report syz C
ci-upstream-net-kasan-gce 2020/01/24 11:37 net-next 9bbc8be29d66 2e95ab33 .config log report syz C