syzbot


INFO: rcu detected stall in addrconf_dad_work (5)
Status: upstream: reported C repro on 2020/09/07 15:59
Reported-by: syzbot+251463bfa779ca087ad1@syzkaller.appspotmail.com
First crash: 25d, last: 25d

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 (7):
Kernel Title Repro Bisected Count Last Reported Patched Status
upstream INFO: rcu detected stall in addrconf_dad_work (4) 8 264d 264d 0/17 closed as invalid on 2020/01/09 08:13
upstream INFO: rcu detected stall in addrconf_dad_work (3) 6 265d 265d 0/17 closed as invalid on 2020/01/08 05:23
linux-4.14 INFO: rcu detected stall in addrconf_dad_work C fix 18 381d 388d 1/1 fixed on 2019/12/06 10:33
upstream INFO: rcu detected stall in addrconf_dad_work (2) 15 299d 301d 0/17 closed as invalid on 2019/12/04 14:14
upstream INFO: rcu detected stall in addrconf_dad_work C cause 126 379d 384d 14/17 fixed on 2019/10/09 10:54
linux-4.19 INFO: rcu detected stall in addrconf_dad_work (2) C fix 1 284d 284d 1/1 fixed on 2020/01/19 15:05
linux-4.19 INFO: rcu detected stall in addrconf_dad_work C fix 19 376d 387d 1/1 fixed on 2019/12/07 19:18

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-root 2020/09/03 15:50 upstream fc3abb53 abf9ba4f .config log report syz C davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com