syzbot


INFO: rcu detected stall in netlink_sendmsg
Status: fixed on 2019/12/10 03:52
Reported-by: syzbot+f17e001b1afb90d01cb0@syzkaller.appspotmail.com
Fix commit: a9e91767b921 sch_hhf: ensure quantum and hhf_non_hh_weight are non-zero
First crash: 816d, last: 811d

Fix bisection: fixed by (bisect log) :
commit a9e91767b921ee196ab693fa13a81b278f53ddac
Author: Cong Wang <xiyou.wangcong@gmail.com>
Date: Sun Sep 8 20:40:51 2019 +0000

  sch_hhf: ensure quantum and hhf_non_hh_weight are non-zero

similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in netlink_sendmsg (2) C done 11 813d 819d 14/22 fixed on 2019/10/09 10:54
upstream INFO: rcu detected stall in netlink_sendmsg (3) C done 6 664d 717d 16/22 fixed on 2020/02/18 14:31
upstream INFO: rcu detected stall in netlink_sendmsg syz 83 1022d 1078d 12/22 fixed on 2019/03/06 07:43
upstream INFO: rcu detected stall in netlink_sendmsg (4) C done 32 21d 615d 0/22 upstream: reported C repro on 2020/03/31 17:43

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-19 2019/09/16 22:58 linux-4.19.y db2d0b7c1dde 51ca0454 .config log report syz C
ci2-linux-4-19 2019/09/15 20:18 linux-4.19.y ee809c7e0895 32d59357 .config log report syz C
ci2-linux-4-19 2019/09/11 23:39 linux-4.19.y ee809c7e0895 f4e53c10 .config log report