syzbot


INFO: rcu detected stall in netlink_sendmsg (2)
Status: fixed on 2019/10/09 10:54
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: d4d6ec6d sch_hhf: ensure quantum and hhf_non_hh_weight are non-zero
First crash: 447d, last: 441d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: no output from test machine (log)
Repro: C syz .config
similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: rcu detected stall in netlink_sendmsg C done 3 439d 444d 1/1 fixed on 2019/12/10 03:52
upstream INFO: rcu detected stall in netlink_sendmsg (3) C done 6 291d 345d 16/17 fixed on 2020/02/18 14:31
upstream INFO: rcu detected stall in netlink_sendmsg syz 83 650d 705d 12/17 fixed on 2019/03/06 07:43
upstream INFO: rcu detected stall in netlink_sendmsg (4) C done 11 27d 242d 0/17 upstream: reported C repro on 2020/03/31 17:43

Sample crash report:

Crashes (11):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce 2019/09/14 21:53 upstream a7f89616 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
ci-upstream-kasan-gce-selinux-root 2019/09/13 14:05 upstream 505a8ec7 40fa42bc .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
ci-upstream-kasan-gce 2019/09/11 17:04 upstream 3120b9a6 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
ci-upstream-kasan-gce-386 2019/09/14 12:19 upstream a7f89616 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
ci-upstream-kasan-gce-386 2019/09/13 17:24 upstream 505a8ec7 40fa42bc .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
ci-upstream-net-this-kasan-gce 2019/09/10 18:22 net c8dc5595 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
ci-upstream-net-this-kasan-gce 2019/09/09 02:09 net 28abe579 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
ci-upstream-net-kasan-gce 2019/09/15 03:34 net-next 1ba569fc 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
ci-upstream-net-kasan-gce 2019/09/09 01:04 net-next 6703a605 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
ci-upstream-net-this-kasan-gce 2019/09/08 23:52 net 28abe579 a60cb4cd .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
ci-upstream-net-kasan-gce 2019/09/08 09:53 net-next 6703a605 a60cb4cd .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