syzbot


KASAN: use-after-free Read in l2cap_chan_close
Status: upstream: reported C repro on 2020/02/07 17:18
Reported-by: syzbot+96414aa0033c363d8458@syzkaller.appspotmail.com
First crash: 9d20h, last: 8d10h

Cause bisection: the bug happens on the oldest tested release
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.14 KASAN: use-after-free Read in l2cap_chan_close C 1 9d06h 9d06h 0/1 upstream: reported C repro on 2020/02/08 02:54
linux-4.19 KASAN: use-after-free Read in l2cap_chan_close C 1 10d 10d 0/1 upstream: reported C repro on 2020/02/06 18:16

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2020/02/08 23:02 upstream f7571657 06150bf1 .config log report syz C davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-kasan-gce 2020/02/08 05:17 upstream 41dcd67e 06150bf1 .config log report syz C davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-kasan-gce-smack-root 2020/02/07 12:55 upstream 90568ecf 06150bf1 .config log report syz C davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org