syzbot


WARNING in io_wqe_enqueue
Status: upstream: reported C repro on 2021/06/04 09:11
Reported-by: syzbot+ea2f1484cffe5109dc10@syzkaller.appspotmail.com
Fix commit: e6ab8991c5d0 io_uring: fix false WARN_ONCE
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 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-qemu2-arm32 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 50d, last: 50d

Cause bisection: introduced by (bisect log) :
commit 24369c2e3bb06d8c4e71fd6ceaf4f8a01ae79b7c
Author: Pavel Begunkov <asml.silence@gmail.com>
Date: Tue Jan 28 00:15:48 2020 +0000

  io_uring: add io-wq workqueue sharing

Crash: WARNING in io_wqe_wake_worker (log)
Repro: C syz .config

Sample crash report:

Crashes (13):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/06/04 09:32 upstream f88cd3fb9df2 0740de69 .config log report syz C WARNING in io_wqe_enqueue
ci-upstream-kasan-gce-root 2021/06/04 09:21 upstream f88cd3fb9df2 0740de69 .config log report syz C WARNING in io_wqe_enqueue
ci-upstream-kasan-gce-smack-root 2021/06/04 09:21 upstream f88cd3fb9df2 0740de69 .config log report syz C WARNING in io_wqe_enqueue
ci-upstream-kasan-gce 2021/06/04 09:21 upstream f88cd3fb9df2 0740de69 .config log report syz C WARNING in io_wqe_enqueue
ci-upstream-linux-next-kasan-gce-root 2021/06/04 09:23 linux-next a1f92694393a 0740de69 .config log report syz C WARNING in io_wqe_enqueue
ci-qemu-upstream 2021/06/04 09:05 upstream f88cd3fb9df2 0740de69 .config log report info WARNING in io_wqe_enqueue
ci-upstream-kasan-gce-selinux-root 2021/06/04 09:02 upstream f88cd3fb9df2 0740de69 .config log report info WARNING in io_wqe_enqueue
ci-upstream-kasan-gce-root 2021/06/04 09:01 upstream f88cd3fb9df2 0740de69 .config log report info WARNING in io_wqe_enqueue
ci-upstream-kasan-gce-smack-root 2021/06/04 09:00 upstream f88cd3fb9df2 0740de69 .config log report info WARNING in io_wqe_enqueue
ci-upstream-kasan-gce 2021/06/04 08:59 upstream f88cd3fb9df2 0740de69 .config log report info WARNING in io_wqe_enqueue
ci-qemu-upstream-386 2021/06/04 09:02 upstream f88cd3fb9df2 0740de69 .config log report info WARNING in io_wqe_enqueue
ci-upstream-kasan-gce-386 2021/06/04 09:00 upstream f88cd3fb9df2 0740de69 .config log report info WARNING in io_wqe_enqueue
ci-upstream-linux-next-kasan-gce-root 2021/06/04 09:02 linux-next a1f92694393a 0740de69 .config log report info WARNING in io_wqe_enqueue