syzbot


general protection fault in mptcp_sendmsg_frag
Status: upstream: reported C repro on 2021/02/17 17:30
Reported-by: syzbot+409b0354a6ba83a86aaf@syzkaller.appspotmail.com
First crash: 257d, last: 253d

Cause bisection: introduced by (bisect log) :
commit 40947e13997a1cba4e875893ca6e5d5e61a0689d
Author: Florian Westphal <fw@strlen.de>
Date: Fri Feb 12 23:59:56 2021 +0000

  mptcp: schedule worker when subflow is closed

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

Fix bisection: fixed by (bisect log) [no-op commit]:
commit 5edf8bd6f4a225f7ad0501f921f9717df152e7fb
Author: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Date: Wed Dec 9 20:07:37 2020 +0000

  arm64: dts: renesas: rcar-gen3: Add missing CMT nodes


Sample crash report:

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-kasan-gce 2021/02/13 14:44 net-next 773dc50d7169 98682e5e .config log report syz C general protection fault in mptcp_sendmsg_frag
ci-upstream-net-kasan-gce 2021/02/13 12:33 net-next 773dc50d7169 98682e5e .config log report syz C general protection fault in mptcp_sendmsg_frag
ci-upstream-net-kasan-gce 2021/02/16 17:23 net-next 9ec5eea5b6ac 98682e5e .config log report info general protection fault in mptcp_sendmsg_frag
ci-upstream-net-kasan-gce 2021/02/16 01:50 net-next d2a04370817f 98682e5e .config log report info general protection fault in mptcp_sendmsg_frag
ci-upstream-net-kasan-gce 2021/02/15 02:01 net-next c48f86071027 98682e5e .config log report info general protection fault in mptcp_sendmsg_frag
ci-upstream-net-kasan-gce 2021/02/14 17:01 net-next c4762993129f 98682e5e .config log report info general protection fault in mptcp_sendmsg_frag
ci-upstream-net-kasan-gce 2021/02/14 01:22 net-next c4762993129f 98682e5e .config log report info general protection fault in mptcp_sendmsg_frag