syzbot


INFO: rcu detected stall in netlink_sendmsg (4)
Status: upstream: reported C repro on 2020/03/31 17:43
Reported-by: syzbot+0fb70e87d8e0ac278fe9@syzkaller.appspotmail.com
First crash: 494d, last: 11d

Cause bisection: introduced by (bisect log) :
commit 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22
Author: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Date: Sat Sep 29 00:59:43 2018 +0000

  tc: Add support for configuring the taprio scheduler

Crash: no output from test machine (log)
Repro: C syz .config
similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in netlink_sendmsg (2) C done 11 690d 696d 14/22 fixed on 2019/10/09 10:54
linux-4.19 INFO: rcu detected stall in netlink_sendmsg C done 3 688d 693d 1/1 fixed on 2019/12/10 03:52
upstream INFO: rcu detected stall in netlink_sendmsg (3) C done 6 541d 594d 16/22 fixed on 2020/02/18 14:31
upstream INFO: rcu detected stall in netlink_sendmsg syz 83 899d 955d 12/22 fixed on 2019/03/06 07:43
linux-4.19 BUG: soft lockup in netlink_sendmsg C 2 4d17h 124d 0/1 upstream: reported C repro on 2021/04/02 18:46

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/03/23 14:54 upstream 84196390620a 51095195 .config log syz C
ci-upstream-kasan-gce-root 2021/01/30 13:16 upstream 0e9bcda5d286 51095195 .config log syz C
ci-upstream-kasan-gce-root 2020/12/31 12:50 upstream f6e1ea196492 51095195 .config log syz C
ci-upstream-kasan-gce-root 2020/12/01 12:25 upstream b65054597872 51095195 .config log syz C
ci-upstream-kasan-gce-root 2020/11/01 12:01 upstream c2dc4c073fb7 51095195 .config log syz C
ci-upstream-kasan-gce-root 2020/10/01 21:09 upstream 44b6e23be32b 51095195 .config log syz C
ci-upstream-kasan-gce-root 2020/08/25 19:28 upstream 6a9dc5fd6170 51095195 .config log report syz C
Crashes (27):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2020/07/06 10:25 upstream 7cc2a8ea1048 51095195 .config log report syz C
ci-upstream-net-kasan-gce 2020/07/06 08:15 net-next e44f65fd666c 51095195 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/07/06 06:09 linux-next 9e50b94b3eb0 51095195 .config log report syz C
ci-upstream-bpf-kasan-gce 2021/07/24 18:46 bpf d6371c76e20d 4d1b57d4 .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-kasan-gce 2021/07/22 09:37 bpf d6371c76e20d 29c3f20f .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-kasan-gce 2021/07/14 12:54 bpf 5acc7d3e8d34 484502bd .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-kasan-gce 2021/07/14 10:01 bpf 5acc7d3e8d34 484502bd .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-net-this-kasan-gce 2021/07/02 04:44 net dbe69e433722 658ebc66 .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-kasan-gce 2021/04/19 20:17 bpf b02265429681 50f523d7 .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-next-kasan-gce 2021/07/22 18:44 bpf-next 807b8f0e24e6 302e51de .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-next-kasan-gce 2021/07/10 03:46 bpf-next eff94154cc1a 8f5a7b8c .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-next-kasan-gce 2021/07/08 11:33 bpf-next a080cdccc93d 95793bce .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-next-kasan-gce 2021/06/30 05:15 bpf-next 84fe73996c2e a4fccb01 .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-next-kasan-gce 2021/06/26 22:29 bpf-next a196fa78a265 9d2ab5df .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-next-kasan-gce 2021/05/30 01:57 bpf-next e8e0f0f48478 325a8dab .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-next-kasan-gce 2021/05/23 20:25 bpf-next a49e72b3bda7 3c7fef33 .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-bpf-next-kasan-gce 2021/05/18 09:30 bpf-next f18ba26da88a a343ba6b .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-net-kasan-gce 2021/05/08 16:02 net-next 95aafe911db6 bc5434be .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-net-kasan-gce 2021/02/21 14:25 net-next 38b5133ad607 3e5ed8b4 .config log report info INFO: rcu detected stall in netlink_sendmsg
ci-upstream-kasan-gce-root 2020/07/26 02:00 upstream 23ee3e4e5bd2 1f7cc1ca .config log report
ci-upstream-kasan-gce 2020/07/08 10:27 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce-root 2020/07/06 17:52 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce-selinux-root 2020/06/26 22:00 upstream 4a21185cda0f aea82c00 .config log report
ci-upstream-net-this-kasan-gce 2020/05/06 07:04 net 38212bb31fe9 35b8eb30 .config log report
ci-upstream-net-this-kasan-gce 2020/04/17 13:39 net 2fcd80144b93 18397578 .config log report
ci-upstream-bpf-next-kasan-gce 2020/03/29 09:57 bpf-next ae661deca7b9 05736b29 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/06 02:41 linux-next 9e50b94b3eb0 51095195 .config log report