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: 11d, last: 11d

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

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 b646acd5 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 b646acd5 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 b646acd5 14052202 .config log report info UBSAN: shift-out-of-bounds in netlink_recvmsg