syzbot


KASAN: use-after-free Read in bit_putcs
Status: upstream: reported C repro on 2020/02/23 17:30
Reported-by: syzbot+b308f5fd049fbbc6e74f@syzkaller.appspotmail.com
Fix commit: 988d0763 vt_ioctl: make VT_RESIZEX behave like VT_RESIZE
Patched on: [ci-qemu-upstream-386 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu-upstream ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 243d, last: 19d
similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.14 KASAN: use-after-free Read in bit_putcs 17 33d 319d 0/1 upstream: reported on 2019/12/06 08:49
linux-4.19 KASAN: use-after-free Read in bit_putcs 18 83d 317d 0/1 upstream: reported on 2019/12/08 10:21

Sample crash report:

Crashes (12):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-root 2020/09/26 02:02 upstream 171d4ff7 4a006f63 .config log report syz C b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, deller@gmx.de, dri-devel@lists.freedesktop.org, gregkh@linuxfoundation.org, jirislaby@kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, penguin-kernel@I-love.SAKURA.ne.jp
ci-upstream-kasan-gce-smack-root 2020/09/30 12:45 upstream ccc1d052 5abc3f1a .config log report info b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, deller@gmx.de, dri-devel@lists.freedesktop.org, gregkh@linuxfoundation.org, jirislaby@kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, penguin-kernel@I-love.SAKURA.ne.jp
ci-upstream-kasan-gce-root 2020/09/26 01:17 upstream 171d4ff7 4a006f63 .config log report info b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, deller@gmx.de, dri-devel@lists.freedesktop.org, gregkh@linuxfoundation.org, jirislaby@kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, penguin-kernel@I-love.SAKURA.ne.jp
ci-upstream-kasan-gce-smack-root 2020/09/24 04:24 upstream c9c9e6a4 54289b08 .config log report info b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, deller@gmx.de, dri-devel@lists.freedesktop.org, gregkh@linuxfoundation.org, jirislaby@kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, penguin-kernel@I-love.SAKURA.ne.jp
ci-upstream-kasan-gce-smack-root 2020/09/08 20:29 upstream 6f6a73c8 abf9ba4f .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, deller@gmx.de, dri-devel@lists.freedesktop.org, gregkh@linuxfoundation.org, jirislaby@kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, penguin-kernel@I-love.SAKURA.ne.jp
ci-upstream-kasan-gce-smack-root 2020/08/26 11:08 upstream 2ac69819 344da168 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, deller@gmx.de, dri-devel@lists.freedesktop.org, gregkh@linuxfoundation.org, jirislaby@kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, penguin-kernel@I-love.SAKURA.ne.jp
ci-upstream-kasan-gce-smack-root 2020/07/30 12:16 upstream d3590ebf 233283a1 .config log report b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, gregkh@linuxfoundation.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, penguin-kernel@I-love.SAKURA.ne.jp
ci-upstream-kasan-gce-smack-root 2020/07/12 05:00 upstream a581387e 18d18b59 .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2020/06/16 00:40 upstream 7ae77150 baca2611 .config log report 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 2020/06/08 15:22 upstream 7ae77150 7604bb03 .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-smack-root 2020/02/19 16:49 upstream 0a44cac8 b690a6e3 .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 2020/06/07 14:18 linux-next e7b08814 2c2b926c .config log report b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org