syzbot


BUG: unable to handle kernel NULL pointer dereference in tc_bind_tclass
Status: fixed on 2019/12/12 17:16
Reported-by: syzbot+2448d1865fa8fd6e470b@syzkaller.appspotmail.com
Fix commit: 54b9f579 net_sched: check cops->tcf_block in tc_bind_tclass()
First crash: 273d, last: 233d

Fix bisection: fixed by (bisect log):

commit 54b9f5791846d2de59e8c65502b3f1071f65424f
Author: Cong Wang <xiyou.wangcong@gmail.com>
Date: Thu Oct 31 18:42:59 2019 +0000

  net_sched: check cops->tcf_block in tc_bind_tclass()

similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
upstream BUG: unable to handle kernel NULL pointer dereference in tc_bind_tclass C cause 61 264d 272d 14/17 fixed on 2019/10/09 10:54
linux-4.19 BUG: unable to handle kernel NULL pointer dereference in tc_bind_tclass C fix 18 254d 273d 1/1 fixed on 2019/12/09 13:28

Sample crash report:

Crashes (14):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci2-linux-4-14 2019/09/27 22:43 linux-4.14.y f6e27dbb d8074e0b .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
ci2-linux-4-14 2019/09/23 01:11 linux-4.14.y f6e27dbb d96e88f3 .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
ci2-linux-4-14 2019/09/07 12:00 linux-4.14.y 414510bc a60cb4cd .config log report syz davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci2-linux-4-14 2019/09/07 11:31 linux-4.14.y 414510bc a60cb4cd .config log report syz davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci2-linux-4-14 2019/09/07 02:28 linux-4.14.y 414510bc acb5b744 .config log report syz davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci2-linux-4-14 2019/09/07 02:00 linux-4.14.y 414510bc acb5b744 .config log report syz davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci2-linux-4-14 2019/10/17 08:45 linux-4.14.y e132c8d7 8c88c9c1 .config log report davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci2-linux-4-14 2019/10/09 18:07 linux-4.14.y 42327896 312c6a5a .config log report davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci2-linux-4-14 2019/10/07 01:15 linux-4.14.y db189223 f3f7d9c8 .config log report davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci2-linux-4-14 2019/10/03 18:05 linux-4.14.y f6e27dbb fc17ba49 .config log report davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci2-linux-4-14 2019/10/03 00:21 linux-4.14.y f6e27dbb 2e29b534 .config log report davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci2-linux-4-14 2019/09/25 16:44 linux-4.14.y f6e27dbb a3355dba .config log report davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci2-linux-4-14 2019/09/23 00:38 linux-4.14.y f6e27dbb d96e88f3 .config log report davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci2-linux-4-14 2019/09/19 03:33 linux-4.14.y 968722f5 46c0be24 .config log report davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com