syzbot


possible deadlock in proc_pid_syscall (2)
Status: upstream: reported on 2020/08/28 04:57
Reported-by: syzbot+db9cdf3dd1f64252c6ef@syzkaller.appspotmail.com
Fix commit: f7cfd871 exec: Transform exec_update_mutex into a rw_semaphore 78af4dc9 perf: Break deadlock involving exec_update_mutex
Patched on: [ci-qemu-upstream 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-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 148d, last: 138d
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 possible deadlock in proc_pid_syscall 29 1d13h 212d 0/1 upstream: reported on 2020/06/24 12:57
upstream possible deadlock in proc_pid_syscall 11 296d 433d 0/17 auto-closed as invalid on 2020/07/31 06:50
linux-4.14 possible deadlock in proc_pid_syscall C 7 1d11h 166d 0/1 upstream: reported C repro on 2020/08/09 14:10

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-root 2020/09/06 23:27 upstream dd9fb9bb abf9ba4f .config log report adobriyan@gmail.com, akpm@linux-foundation.org, avagin@gmail.com, christian@brauner.io, daniel.m.jordan@oracle.com, ebiederm@xmission.com, gladkov.alexey@gmail.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, walken@google.com
ci-upstream-kasan-gce-selinux-root 2020/08/28 03:41 upstream 15bc20c6 816e0689 .config log report adobriyan@gmail.com, akpm@linux-foundation.org, avagin@gmail.com, christian@brauner.io, ebiederm@xmission.com, gladkov.alexey@gmail.com, keescook@chromium.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, walken@google.com