syzbot


INFO: rcu detected stall in addrconf_dad_work (2)
Status: fixed on 2020/01/19 15:05
Reported-by: syzbot+9353d06a9f55bda184c2@syzkaller.appspotmail.com
Fix commit: 94ac4a4d pkt_sched: fq: do not accept silly TCA_FQ_QUANTUM
First crash: 510d, last: 510d

Fix bisection: fixed by (bisect log) :
commit 94ac4a4d938f51a18a51286fd94a46c1d6558103
Author: Eric Dumazet <edumazet@google.com>
Date: Mon Jan 6 14:10:39 2020 +0000

  pkt_sched: fq: do not accept silly TCA_FQ_QUANTUM

similar bugs (7):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in addrconf_dad_work (5) C done 1 11d 247d 0/22 upstream: reported C repro on 2020/09/07 15:59
upstream INFO: rcu detected stall in addrconf_dad_work (4) 8 490d 491d 0/22 closed as invalid on 2020/01/09 08:13
upstream INFO: rcu detected stall in addrconf_dad_work (3) 6 491d 491d 0/22 closed as invalid on 2020/01/08 05:23
linux-4.14 INFO: rcu detected stall in addrconf_dad_work C done 18 607d 614d 1/1 fixed on 2019/12/06 10:33
upstream INFO: rcu detected stall in addrconf_dad_work (2) 15 526d 527d 0/22 closed as invalid on 2019/12/04 14:14
upstream INFO: rcu detected stall in addrconf_dad_work C done 126 605d 610d 14/22 fixed on 2019/10/09 10:54
linux-4.19 INFO: rcu detected stall in addrconf_dad_work C done 19 602d 613d 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 Title
ci2-linux-4-19 2019/12/20 02:22 linux-4.19.y 7d120bf2 36650b4b .config log report syz C