syzbot


general protection fault in tcf_action_destroy (2)
Status: upstream: reported C repro on 2020/03/10 22:15
Reported-by: syzbot+92a80fff3b3af6c4464e@syzkaller.appspotmail.com
First crash: 84d, last: 65d

Cause bisection: introduced by (bisect log):

commit 599be01ee567b61f4471ee8078870847d0a11e8e
Author: Cong Wang <xiyou.wangcong@gmail.com>
Date: Mon Feb 3 05:14:35 2020 +0000

  net_sched: fix an OOB access in cls_tcindex

Crash: KASAN: slab-out-of-bounds Read in tcindex_set_parms (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log):

commit 0d1c3530e1bd38382edef72591b78e877e0edcd3
Author: Cong Wang <xiyou.wangcong@gmail.com>
Date: Thu Mar 12 05:42:28 2020 +0000

  net_sched: keep alloc_hash updated after hash allocation

similar bugs (3):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.19 general protection fault in tcf_action_destroy C fix 15 243d 265d 1/1 fixed on 2019/12/11 14:03
upstream general protection fault in tcf_action_destroy 128 248d 266d 14/17 fixed on 2019/10/15 23:40
linux-4.19 general protection fault in tcf_action_destroy (2) 1 86d 86d 0/1 upstream: reported on 2020/03/08 08:55

Sample crash report:

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-selinux-root 2020/03/23 09:25 upstream 67d584e3 78267cec .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
ci-upstream-kasan-gce-root 2020/03/20 05:28 upstream cd607737 2c31c529 .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
ci-upstream-kasan-gce-root 2020/03/19 14:08 upstream 5076190d 2c31c529 .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
ci-upstream-kasan-gce-386 2020/03/10 17:45 upstream 30bb5572 35f53e45 .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
ci-upstream-net-this-kasan-gce 2020/03/11 05:36 net ece0d7bd 35f53e45 .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
ci-upstream-linux-next-kasan-gce-root 2020/03/29 22:54 linux-next 770fbb32 05736b29 .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
ci-upstream-kasan-gce-smack-root 2020/03/17 20:30 upstream fb33c651 749688d2 .config log report syz 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