syzbot


INFO: task hung in io_sq_thread_stop
Status: upstream: reported C repro on 2020/09/09 08:49
Reported-by: syzbot+3c23789ea938faaef049@syzkaller.appspotmail.com
Fix commit: io_uring: don't sleep schedule in SQPOLL thread if we need to park
Patched on: [ci-upstream-linux-next-kasan-gce-root], missing on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 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-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 324d, last: 165d

Cause bisection: the cause commit could be any of (bisect log):
  d730b1a29432 io_uring: add IOURING_REGISTER_RESTRICTIONS opcode
  7ec3d1dd9378 io_uring: allow disabling rings during the creation
Patch testing requests:
Created Duration User Patch Repo Result
2020/09/09 10:07 12m sgarzare@redhat.com https://github.com/stefano-garzarella/linux.git fix-io_uring_enter-hang report log

Sample crash report:

Crashes (211):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2020/09/09 04:52 linux-next dff9f829e5b0 abf9ba4f .config log report syz C
ci-upstream-kasan-gce-root 2021/02/15 17:05 upstream f40ddce88593 98682e5e .config log report info INFO: task hung in io_sq_thread_stop
ci-upstream-kasan-gce-root 2021/02/06 00:05 upstream dd86e7fa07a3 23a562df .config log report info INFO: task hung in io_sq_thread_stop
ci-upstream-kasan-gce-selinux-root 2021/01/30 15:07 upstream 0e9bcda5d286 fc9fd31e .config log report info INFO: task hung in io_sq_thread_stop
ci-upstream-kasan-gce-selinux-root 2021/01/29 20:05 upstream bec4c2968fce 6593fd32 .config log report info INFO: task hung in io_sq_thread_stop
ci-upstream-kasan-gce-root 2021/01/27 03:51 upstream 13391c60da33 55a7d4df .config log report info INFO: task hung in io_sq_thread_stop
ci-upstream-kasan-gce-selinux-root 2021/01/26 12:59 upstream 13391c60da33 52e37319 .config log report info INFO: task hung in io_sq_thread_stop
ci-upstream-kasan-gce-selinux-root 2021/01/26 06:30 upstream f8ad8187c3b5 52e37319 .config log report info INFO: task hung in io_sq_thread_stop
ci-upstream-kasan-gce-selinux-root 2021/01/25 17:18 upstream 6ee1d745b7c9 52e37319 .config log report info INFO: task hung in io_sq_thread_stop
ci-upstream-kasan-gce-selinux-root 2021/01/25 13:56 upstream 6ee1d745b7c9 52e37319 .config log report info INFO: task hung in io_sq_thread_stop
ci-upstream-kasan-gce-selinux-root 2021/01/25 03:09 upstream e68061375f79 52e37319 .config log report info INFO: task hung in io_sq_thread_stop
ci-upstream-linux-next-kasan-gce-root 2021/01/24 10:07 linux-next bc085f8fc88f 52e37319 .config log report info INFO: task hung in io_sq_thread_stop
ci-upstream-kasan-gce-root 2021/01/11 17:54 upstream 7c53f6b671f4 2c1f2513 .config log report info
ci-upstream-kasan-gce-root 2021/01/10 19:00 upstream 2ff90100ace8 2c1f2513 .config log report info
ci-upstream-kasan-gce-selinux-root 2021/01/08 18:10 upstream f5e6c330254a c104d4a3 .config log report info
ci-upstream-kasan-gce-root 2021/01/06 22:14 upstream 9f1abbe97c08 c104d4a3 .config log report info
ci-upstream-kasan-gce-selinux-root 2021/01/04 02:10 upstream e71ba9452f0b 79264ae3 .config log report info
ci-upstream-kasan-gce-root 2021/01/01 08:36 upstream f6e1ea196492 79264ae3 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/30 06:13 upstream 139711f033f6 0fa352f2 .config log report info
ci-upstream-linux-next-kasan-gce-root 2021/01/04 09:35 linux-next 766eff5a4f6c 79264ae3 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/20 21:14 linux-next 0d52778b8710 04201c06 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/10 21:24 linux-next 14240d4c5b25 f900b48c .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/05 03:19 linux-next 0eedceafd3a6 20366b87 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/12/02 20:34 linux-next 0eedceafd3a6 8c9190ef .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/20 06:57 linux-next f8550c0d35df 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/20 04:05 linux-next f8550c0d35df 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/20 01:44 linux-next f8550c0d35df 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/19 23:13 linux-next f8550c0d35df 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/19 22:30 linux-next f8550c0d35df 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/19 21:14 linux-next f8550c0d35df 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/19 19:00 linux-next f8550c0d35df 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/19 13:55 linux-next f8550c0d35df 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/19 12:42 linux-next f8550c0d35df 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/19 11:24 linux-next f8550c0d35df 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/19 05:56 linux-next 205292332779 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/19 04:24 linux-next 205292332779 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/19 03:10 linux-next 205292332779 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/18 21:21 linux-next 205292332779 0767f13f .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/18 18:15 linux-next 205292332779 09323409 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/18 15:51 linux-next 205292332779 09323409 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/18 09:31 linux-next 205292332779 09323409 .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/18 07:18 linux-next 7c8ca8129ee9 bd2a760b .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/18 06:18 linux-next 7c8ca8129ee9 bd2a760b .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/18 03:39 linux-next 7c8ca8129ee9 bd2a760b .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/18 00:09 linux-next 7c8ca8129ee9 bd2a760b .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/11/17 22:59 linux-next 7c8ca8129ee9 bd2a760b .config log report info
ci-upstream-linux-next-kasan-gce-root 2020/09/08 21:00 linux-next dff9f829e5b0 abf9ba4f .config log report