syzbot


divide error in fbcon_switch
Status: closed as dup on 2020/07/27 22:47
Reported-by: syzbot+13013adc4a234406c29e@syzkaller.appspotmail.com
First crash: 246d, last: 40d

Cause bisection: the bug happens on the oldest tested release
Crash: no output from test machine (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log):

commit ce684552a266cb1c7cc2f7e623f38567adec6653
Author: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Date: Sun Jul 12 11:10:12 2020 +0000

  vt: Reject zero-sized screen buffer size.

Duplicate of (1):
Title Repro Bisected Count Last Reported
general protection fault in do_con_write C cause 10703 10d 245d
similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.14 divide error in fbcon_switch C 282 7d16h 246d 0/1 upstream: reported C repro on 2019/12/03 01:21
linux-4.19 divide error in fbcon_switch C 259 7d14h 247d 0/1 upstream: reported C repro on 2019/12/02 21:32

Sample crash report:

Crashes (326):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2019/12/03 20:36 upstream 76bb8b05 ae13a849 .config log report syz C b.zolnierkie@samsung.com, daniel.thompson@linaro.org, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, ghalat@redhat.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, sam@ravnborg.org
ci-upstream-kasan-gce-selinux-root 2019/12/03 16:46 upstream 76bb8b05 ab342da3 .config log report syz C b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, ghalat@redhat.com, gregkh@linuxfoundation.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 2020/06/26 02:26 upstream 7ae77150 aea82c00 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se
ci-upstream-kasan-gce-selinux-root 2020/06/25 23:32 upstream 7ae77150 f9147b08 .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se
ci-upstream-kasan-gce-selinux-root 2020/06/25 17:32 upstream 7ae77150 c7b4497a .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-selinux-root 2020/06/25 11:16 upstream 7ae77150 54566aff .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-smack-root 2020/06/25 09:50 upstream 7ae77150 54566aff .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se
ci-upstream-kasan-gce 2020/06/25 07:40 upstream 7ae77150 54566aff .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-selinux-root 2020/06/25 06:18 upstream 7ae77150 54566aff .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se
ci-upstream-kasan-gce-root 2020/06/25 01:59 upstream 7ae77150 54566aff .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se
ci-upstream-kasan-gce 2020/06/24 22:04 upstream 7ae77150 54566aff .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-selinux-root 2020/06/24 18:38 upstream 7ae77150 54566aff .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-root 2020/06/24 06:18 upstream 7ae77150 54566aff .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se
ci-upstream-kasan-gce-selinux-root 2020/06/23 07:17 upstream 7ae77150 1afe1535 .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-smack-root 2020/06/20 02:18 upstream 7ae77150 81abc331 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-root 2020/06/19 16:32 upstream 7ae77150 bc258b50 .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se
ci-upstream-kasan-gce-root 2020/06/19 12:33 upstream 7ae77150 bc258b50 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-smack-root 2020/06/19 04:00 upstream 7ae77150 bc258b50 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se
ci-upstream-kasan-gce-smack-root 2020/06/19 00:55 upstream 7ae77150 bc258b50 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-root 2020/06/18 12:20 upstream 7ae77150 d45a4d69 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se
ci-upstream-kasan-gce-root 2020/06/18 07:16 upstream 7ae77150 d45a4d69 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, natechancellor@gmail.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-root 2020/06/17 14:00 upstream 7ae77150 b9f3810b .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se
ci-upstream-kasan-gce-root 2020/06/17 08:56 upstream 7ae77150 b9f3810b .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se
ci-upstream-kasan-gce-root 2020/06/17 04:04 upstream 7ae77150 559fbe2d .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se
ci-upstream-kasan-gce-root 2020/06/17 01:42 upstream 7ae77150 559fbe2d .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-selinux-root 2020/06/16 19:29 upstream 7ae77150 559fbe2d .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se
ci-upstream-kasan-gce-root 2020/06/16 08:03 upstream 7ae77150 baca2611 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se, sam@ravnborg.org
ci-upstream-kasan-gce-root 2020/06/15 19:09 upstream 7ae77150 baca2611 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, natechancellor@gmail.com, peda@axentia.se
ci-upstream-kasan-gce-smack-root 2020/06/15 16:33 upstream 7ae77150 8e3ab941 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se
ci-upstream-kasan-gce-smack-root 2020/06/15 13:38 upstream 7ae77150 8e3ab941 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se
ci-upstream-kasan-gce-root 2020/06/14 23:31 upstream 7ae77150 2a22c77a .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se
ci-upstream-kasan-gce-smack-root 2020/06/14 20:02 upstream 7ae77150 2a22c77a .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se
ci-upstream-kasan-gce-selinux-root 2020/06/11 19:13 upstream 7ae77150 3ab7a05a .config log report 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-smack-root 2020/06/10 15:59 upstream 7ae77150 a6f7998d .config log report 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-root 2020/06/10 04:51 upstream 7ae77150 860c4de9 .config log report 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-root 2020/06/10 03:42 upstream 7ae77150 860c4de9 .config log report 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-smack-root 2020/06/10 01:32 upstream 7ae77150 860c4de9 .config log report 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-root 2020/06/09 15:26 upstream 7ae77150 092934c1 .config log report 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-root 2020/06/09 12:43 upstream 7ae77150 0d60b78a .config log report 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-smack-root 2020/06/09 03:09 upstream 7ae77150 0d60b78a .config log report 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 2020/06/09 00:34 upstream 7ae77150 7604bb03 .config log report 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-root 2020/06/08 15:11 upstream 7ae77150 7604bb03 .config log report 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 2020/06/08 00:49 upstream 7ae77150 2c2b926c .config log report 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-smack-root 2020/06/07 11:18 upstream 7ae77150 2c2b926c .config log report 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-smack-root 2020/06/06 07:50 upstream 7ae77150 e6b89e4e .config log report 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 2020/06/01 23:03 upstream 9bf9511e a0331e89 .config log report 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-root 2020/05/29 00:01 upstream 75caf310 0d951763 .config log report 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-root 2020/05/28 22:59 upstream 75caf310 0d951763 .config log report 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-386 2020/06/24 23:57 upstream 7ae77150 54566aff .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, geert@linux-m68k.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, ndesaulniers@google.com, peda@axentia.se
ci-upstream-kasan-gce-386 2020/06/18 06:12 upstream 7ae77150 d45a4d69 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, hqjagain@gmail.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, natechancellor@gmail.com, peda@axentia.se
ci-upstream-linux-next-kasan-gce-root 2020/05/23 05:16 linux-next c11d28ab 9682898d .config log report 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