syzbot


KASAN: use-after-free Read in soft_cursor
Status: upstream: reported C repro on 2019/12/06 12:25
Reported-by: syzbot+cf43fb300aa142fb024b@syzkaller.appspotmail.com
First crash: 77d, last: 20h22m

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-4.19 KASAN: use-after-free Read in soft_cursor C 6 25d 79d 0/1 upstream: reported C repro on 2019/12/04 13:15
linux-4.14 KASAN: use-after-free Read in soft_cursor C 2 10d 79d 0/1 upstream: reported C repro on 2019/12/04 13:11

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro
ci-upstream-kasan-gce-selinux-root 2020/01/26 21:41 upstream 5cf9ad0e 98b4ef2d .config log report syz C
Crashes (6):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-selinux-root 2019/12/06 11:48 upstream b0d4beaa 98b4ef2d .config log report syz C b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2019/12/06 11:06 upstream b0d4beaa 98b4ef2d .config log report syz C b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org
ci-upstream-linux-next-kasan-gce-root 2019/12/18 13:06 linux-next b9c5ef25 f2fe0772 .config log report syz C b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-selinux-root 2019/12/18 23:40 upstream 2187f215 79b211f7 .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org
ci-qemu-upstream-386 2019/12/21 17:39 upstream 62104694 bc586918 .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org
ci-upstream-linux-next-kasan-gce-root 2020/02/21 04:53 linux-next bee46b30 bd2a74a3 .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org