syzbot


KASAN: invalid-free in snd_seq_port_disconnect
Status: upstream: reported syz repro on 2020/07/30 05:53
Reported-by: syzbot+9d2abfef257f3e2d4713@syzkaller.appspotmail.com
Fix commit: 80982c7e ALSA: seq: oss: Serialize ioctls
Patched on: [ci-qemu-upstream-386 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 ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu-upstream ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce]
First crash: 12d, last: 7d16h

Cause bisection: the bug happens on the oldest tested release
Crash: WARNING in sysfs_warn_dup (log)
Repro: syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2020/08/04 12:08 16m tiwai@suse.de git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git test/seq-oss-serialize OK

Sample crash report:

Crashes (9):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2020/08/01 18:55 upstream 7dc6fd0f d895b3be .config log report syz alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, perex@perex.cz, tiwai@suse.com
ci-upstream-kasan-gce-root 2020/08/01 17:04 upstream 7dc6fd0f d895b3be .config log report syz alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, perex@perex.cz, tiwai@suse.com
ci-upstream-kasan-gce-root 2020/08/01 15:13 upstream 7dc6fd0f d895b3be .config log report syz alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, perex@perex.cz, tiwai@suse.com
ci-upstream-kasan-gce-selinux-root 2020/07/31 12:47 upstream 83bdc727 8df85ed9 .config log report syz alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, perex@perex.cz, tiwai@suse.com
ci-upstream-kasan-gce-selinux-root 2020/07/31 12:26 upstream 83bdc727 8df85ed9 .config log report syz alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, perex@perex.cz, tiwai@suse.com
ci-upstream-kasan-gce-selinux-root 2020/07/31 12:12 upstream 83bdc727 8df85ed9 .config log report syz alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, perex@perex.cz, tiwai@suse.com
ci-upstream-kasan-gce-smack-root 2020/07/30 03:50 upstream d3590ebf 233283a1 .config log report syz alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, perex@perex.cz, tiwai@suse.com
ci-upstream-linux-next-kasan-gce-root 2020/08/04 03:06 linux-next 01830e6c 196277c4 .config log report syz alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, perex@perex.cz, tiwai@suse.com
ci-upstream-linux-next-kasan-gce-root 2020/08/04 01:16 linux-next 01830e6c 196277c4 .config log report syz alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, perex@perex.cz, tiwai@suse.com