syzbot


KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer
Status: upstream: reported C repro on 2019/12/07 21:58
Reported-by: syzbot+0568d05e486eee0a1ba2@syzkaller.appspotmail.com
First crash: 76d, 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: global-out-of-bounds Read in fb_pad_aligned_buffer C 1 16d 76d 0/1 upstream: reported C repro on 2019/12/07 22:52
linux-4.19 KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer C 1 16d 76d 0/1 upstream: reported C repro on 2019/12/07 22:12

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 21:15 upstream 5cf9ad0e 1508f453 .config log report syz C
Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-selinux-root 2019/12/09 04:26 upstream 9455d25f 1508f453 .config log report syz C b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, kraxel@redhat.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-linux-next-kasan-gce-root 2019/12/21 07:46 linux-next 7ddd09fc bc586918 .config log report syz C b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, sam@ravnborg.org
ci-upstream-kasan-gce-selinux-root 2019/12/07 21:40 upstream ad910e36 1508f453 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, kraxel@redhat.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-linux-next-kasan-gce-root 2019/12/10 03:00 linux-next 6cf8298d 4b83c8fb .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, kraxel@redhat.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, peda@axentia.se, sam@ravnborg.org