syzbot


UBSAN: shift-out-of-bounds in netlink_recvmsg
Status: upstream: reported C repro on 2021/02/18 17:21
Reported-by: syzbot+cdb35bcbfac5f493e2af@syzkaller.appspotmail.com
First crash: 161d, last: 161d

Cause bisection: introduced by (bisect log) :
commit b911c97c7dc771633c68ea9b8f15070f8af3d323
Author: Florian Westphal <fw@strlen.de>
Date: Sat Feb 13 00:00:01 2021 +0000

  mptcp: add netlink event support

Crash: UBSAN: shift-out-of-bounds in netlink_recvmsg (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) [no-op commit]:
commit 02cc6b495dd694484167a841d7ede4b6209c658f
Author: Jiapeng Zhong <abaci-bugfix@linux.alibaba.com>
Date: Wed Jan 20 07:50:31 2021 +0000

  virtio-mem: Assign boolean values to a bool variable

Patch testing requests:
Created Duration User Patch Repo Result
2021/03/07 14:37 10m anant.thazhemadam@gmail.com git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git master report log

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-kasan-gce 2021/02/17 21:29 net-next b646acd5eb48 14052202 .config log report syz C UBSAN: shift-out-of-bounds in netlink_recvmsg
ci-upstream-bpf-next-kasan-gce 2021/02/17 21:03 bpf-next b646acd5eb48 14052202 .config log report syz C UBSAN: shift-out-of-bounds in netlink_recvmsg
ci-upstream-bpf-next-kasan-gce 2021/02/17 20:35 bpf-next b646acd5eb48 14052202 .config log report info UBSAN: shift-out-of-bounds in netlink_recvmsg