syzbot


INFO: rcu detected stall in mld_ifc_timer_expire
Status: fixed on 2019/12/06 15:57
Reported-by: syzbot+42e1254b6c2097b925ed@syzkaller.appspotmail.com
Fix commit: cc243e24 sch_hhf: ensure quantum and hhf_non_hh_weight are non-zero
First crash: 266d, last: 256d

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 (3):
Kernel Title Repro Bisected Count Last Reported Patched Status
upstream INFO: rcu detected stall in mld_ifc_timer_expire C cause 152 257d 265d 14/17 fixed on 2019/10/09 10:54
linux-4.19 INFO: rcu detected stall in mld_ifc_timer_expire C fix 33 254d 266d 1/1 fixed on 2019/12/07 19:18
upstream INFO: rcu detected stall in mld_ifc_timer_expire (2) 1 177d 177d 0/17 closed as invalid on 2019/12/04 14:04

Sample crash report:

Crashes (9):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci2-linux-4-14 2019/09/16 15:04 linux-4.14.y 968722f5 55c50e70 .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
ci2-linux-4-14 2019/09/10 03:32 linux-4.14.y 414510bc a60cb4cd .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
ci2-linux-4-14 2019/09/09 10:56 linux-4.14.y 414510bc a60cb4cd .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
ci2-linux-4-14 2019/09/09 08:52 linux-4.14.y 414510bc a60cb4cd .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
ci2-linux-4-14 2019/09/08 20:22 linux-4.14.y 414510bc a60cb4cd .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
ci2-linux-4-14 2019/09/07 15:55 linux-4.14.y 414510bc a60cb4cd .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
ci2-linux-4-14 2019/09/07 10:48 linux-4.14.y 414510bc a60cb4cd .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
ci2-linux-4-14 2019/09/07 07:50 linux-4.14.y 414510bc a60cb4cd .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
ci2-linux-4-14 2019/09/16 09:22 linux-4.14.y 968722f5 55c50e70 .config log report davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com