Re: possible deadlock in flush_workqueue (2)

syzbot
2019-03-22T11:12:03Z

syzbot has bisected this bug to:

commit f547fac624be53ad8b07e9ebca7654a7827ba61b
Author: Sabrina Dubroca <sd@queasysnail.net>
Date: Fri Oct 12 14:22:47 2018 +0000

ipv6: rate-limit probes for neighbourless routes

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17affd1b200000
start commit: f547fac6 ipv6: rate-limit probes for neighbourless routes
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=146ffd1b200000
console output: https://syzkaller.appspot.com/x/log.txt?x=106ffd1b200000
kernel config: https://syzkaller.appspot.com/x/.config?x=963b24abf3f7c2d8
dashboard link: https://syzkaller.appspot.com/bug?extid=a50c7541a4a55cd49b02
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12097f03400000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10b55ac5400000

Reported-by: syzbot+a50c7541a4a55cd49b02@syzkaller.appspotmail.com
Fixes: f547fac624be ("ipv6: rate-limit probes for neighbourless routes")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection