syzbot


KASAN: use-after-free Read in tty_open
Status: upstream: reported C repro on 2019/12/03 23:25
Reported-by: syzbot+9af6d43c1beabec8fd05@syzkaller.appspotmail.com
First crash: 80d, last: 26d

Cause bisection: introduced by (bisect log):

commit 2de50e9674fc4ca3c6174b04477f69eb26b4ee31
Author: Russell Currey <ruscur@russell.cc>
Date: Mon Feb 8 04:08:20 2016 +0000

  powerpc/powernv: Remove support for p5ioc2

Crash: BUG: spinlock lockup suspected in nf_conntrack_lock (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 tty_open C 5 8d18h 80d 0/1 upstream: reported C repro on 2019/12/03 03:42
linux-4.19 KASAN: use-after-free Read in tty_open C 1 21d 81d 0/1 upstream: reported C repro on 2019/12/02 23:18

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro
ci-upstream-kasan-gce-root 2020/01/26 22:25 upstream 5cf9ad0e eef6e580 .config log report syz C
Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2019/12/15 09:11 upstream 07c4b9e9 eef6e580 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-selinux-root 2019/12/14 15:43 upstream e31736d9 eef6e580 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2019/12/04 04:17 upstream 76bb8b05 ae13a849 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2019/12/03 22:19 upstream 76bb8b05 ae13a849 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-selinux-root 2019/12/03 21:20 upstream 76bb8b05 ae13a849 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-386 2019/12/04 00:07 upstream 76bb8b05 ae13a849 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-linux-next-kasan-gce-root 2019/12/26 04:47 linux-next 7ddd09fc be5c2c81 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org