syzbot


WARNING in cbq_destroy_class
Status: fixed on 2020/02/18 14:31
Reported-by: syzbot+0a0596220218fcb603a8@syzkaller.appspotmail.com
Fix commit: 2e24cd75 net_sched: fix ops->bind_class() implementations
First crash: 245d, last: 222d

Cause bisection: introduced by (bisect log):

commit d51aae68b142f48232257e96ce317db25445418d
Author: Jiri Pirko <jiri@mellanox.com>
Date: Mon Nov 27 17:37:21 2017 +0000

  net: sched: cbq: create block for q->link.block

Crash: WARNING in cbq_destroy_class (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.19 WARNING in cbq_destroy_class C fix 1 243d 243d 1/1 fixed on 2020/02/23 20:58
linux-4.14 WARNING in cbq_destroy_class C fix 1 122d 242d 0/1 upstream: reported C repro on 2020/01/24 21:03
Patch testing requests:
Created Duration User Patch Repo Result
2020/01/24 01:04 19m xiyou.wangcong@gmail.com https://github.com/congwang/linux.git syzbot OK
2020/01/23 04:14 18m xiyou.wangcong@gmail.com https://github.com/congwang/linux.git syzbot OK

Sample crash report:

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-selinux-root 2020/01/23 12:32 upstream dbab40bd 3334d684 .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-root 2020/01/23 09:33 upstream dbab40bd 3334d684 .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 2020/01/22 03:50 upstream d96d875e 8eda0b95 .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 2020/01/21 22:41 upstream d96d875e 8eda0b95 .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 2020/01/21 18:49 net 80892772 8eda0b95 .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 2020/01/21 18:26 net-next 17e10a15 8eda0b95 .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 2020/02/13 15:31 net-next fdfa3a67 84f4fc8a .config log report 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