syzbot


INFO: task hung in io_queue_file_removal
Status: fixed on 2020/05/10 10:42
Reported-by: syzbot+538d1957ce178382a394@syzkaller.appspotmail.com
Fix commit: 4afdb733b160 io-uring: drop completion when removing file
First crash: 631d, last: 610d

Cause bisection: introduced by (bisect log) :
commit 05f3fb3c5397524feae2e73ee8e150a9090a7da2
Author: Jens Axboe <axboe@kernel.dk>
Date: Mon Dec 9 18:22:50 2019 +0000

  io_uring: avoid ring quiesce for fixed file set unregister and update

Crash: WARNING: ODEBUG bug in io_sqe_files_unregister (log)
Repro: C syz .config

Sample crash report:

Crashes (16):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2020/03/20 12:24 upstream cd607737f3b8 2c31c529 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/03/28 23:47 upstream 69c5eea3128e f1ebdfba .config log report
ci-upstream-kasan-gce-selinux-root 2020/03/27 09:45 upstream f3e69428b5e2 7d95711b .config log report
ci-upstream-kasan-gce-selinux-root 2020/03/25 03:53 upstream 76ccd234269b 68660b21 .config log report
ci-upstream-kasan-gce 2020/03/22 14:47 upstream b74b991fb8b9 78267cec .config log report
ci-upstream-kasan-gce-root 2020/03/20 10:00 upstream cd607737f3b8 2c31c529 .config log report
ci-upstream-kasan-gce 2020/03/16 20:45 upstream fb33c6510d55 749688d2 .config log report
ci-upstream-kasan-gce-root 2020/03/15 20:05 upstream d3dca69085e9 749688d2 .config log report
ci-upstream-kasan-gce 2020/03/15 09:38 upstream d3dca69085e9 749688d2 .config log report
ci-upstream-kasan-gce 2020/03/13 12:25 upstream 3cc6e2c599cd d850e9d0 .config log report
ci-upstream-kasan-gce-selinux-root 2020/03/12 15:01 upstream e6e6ec48dd0f d850e9d0 .config log report
ci-upstream-kasan-gce 2020/03/12 14:15 upstream e6e6ec48dd0f d850e9d0 .config log report
ci-upstream-kasan-gce-root 2020/03/11 21:23 upstream f35111a94654 e7caca8e .config log report
ci-upstream-kasan-gce-selinux-root 2020/03/10 13:11 upstream 30bb5572ce7a 35f53e45 .config log report
ci-upstream-kasan-gce 2020/03/09 18:50 upstream 2c523b344dfa 2e9971bb .config log report
ci-upstream-kasan-gce 2020/03/07 22:45 upstream 63849c8f4107 2e9971bb .config log report