syzbot


INFO: rcu detected stall in mld_dad_timer_expire
Status: fixed on 2019/12/09 13:28
Reported-by: syzbot+4e4787335de34327667b@syzkaller.appspotmail.com
Fix commit: cc243e24 sch_hhf: ensure quantum and hhf_non_hh_weight are non-zero
First crash: 252d, last: 252d

Fix bisection: fixed by (bisect log):

commit cc243e2427cef2a5dd7367cb0e0b846503350ffe
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 (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
upstream INFO: rcu detected stall in mld_dad_timer_expire 3 256d 258d 14/17 fixed on 2019/10/09 10:54
upstream INFO: rcu detected stall in mld_dad_timer_expire (2) 2 177d 177d 0/17 closed as invalid on 2019/11/29 14:24

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci2-linux-4-14 2019/09/14 23:07 linux-4.14.y e2cd24b6 32d59357 .config log report syz C davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com