syzbot


WARNING: refcount bug in red_destroy
Status: fixed on 2020/09/25 01:17
Reported-by: syzbot+e5ea5f8a3ecfd4427a1c@syzkaller.appspotmail.com
Fix commit: 5438dd45 net_sched: fix error path in red_init()
First crash: 34d, last: 34d

Cause bisection: introduced by (bisect log):

commit aee9caa03fc3c8b02f8f31824354d85f30e562e0
Author: Petr Machata <petrm@mellanox.com>
Date: Fri Jun 26 22:45:28 2020 +0000

  net: sched: sch_red: Add qevents "early_drop" and "mark"

Crash: WARNING: refcount bug in qdisc_create (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2020/08/26 22:38 15m xiyou.wangcong@gmail.com https://github.com/congwang/linux.git net OK

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-smack-root 2020/08/25 07:56 upstream 6a9dc5fd 344da168 .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