------------[ cut here ]------------ WARNING: CPU: 0 PID: 11389 at fs/io_uring.c:8745 io_ring_ctx_wait_and_kill+0x4f2/0x600 fs/io_uring.c:8745 Modules linked in: CPU: 0 PID: 11389 Comm: syz-executor.4 Not tainted 5.11.0-rc3-next-20210112-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:io_ring_ctx_wait_and_kill+0x4f2/0x600 fs/io_uring.c:8745 Code: 0f 85 23 01 00 00 48 8b ab 68 01 00 00 be 08 00 00 00 48 8d 7d 50 e8 7d 97 da ff f0 4c 29 65 50 e9 80 fd ff ff e8 9e b9 97 ff <0f> 0b 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 0f b6 04 RSP: 0018:ffffc90002a5fe38 EFLAGS: 00010216 RAX: 0000000000001256 RBX: ffff88806dad0000 RCX: ffffc90011853000 RDX: 0000000000040000 RSI: ffffffff81db69a2 RDI: 0000000000000003 RBP: ffff88806dad0044 R08: 0000000000000002 R09: ffffffff8ed458ef R10: ffffffff81db651d R11: 0000000000000000 R12: 0000000000000002 R13: ffff88806dad0040 R14: ffff88806dad0380 R15: ffff8880316c0000 FS: 00007fe08fcc6700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f73f3961028 CR3: 0000000014bbf000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: io_uring_release+0x3e/0x50 fs/io_uring.c:8787 __fput+0x283/0x920 fs/file_table.c:280 task_work_run+0xdd/0x190 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fe08fcc5be8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffe8 RBX: 0000000020000040 RCX: 000000000045e219 RDX: 0000000020ffd000 RSI: 0000000020000040 RDI: 0000000000002094 RBP: 000000000119bfd8 R08: 0000000020000100 R09: 0000000020000100 R10: 00000000200000c0 R11: 0000000000000206 R12: 0000000020ffd000 R13: 0000000020ffd000 R14: 0000000020000100 R15: 00000000200000c0