------------[ cut here ]------------
WARNING: CPU: 0 PID: 19170 at fs/io_uring.c:8917 io_disable_sqo_submit fs/io_uring.c:8917 [inline]
WARNING: CPU: 0 PID: 19170 at fs/io_uring.c:8917 io_uring_flush+0x3c3/0x470 fs/io_uring.c:9134
Modules linked in:

CPU: 1 PID: 19170 Comm: syz-executor.5 Not tainted 5.11.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:io_disable_sqo_submit fs/io_uring.c:8917 [inline]
RIP: 0010:io_uring_flush+0x3c3/0x470 fs/io_uring.c:9134
Code: c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 f5 a7 99 ff 0f 0b e9 22 fd ff ff e8 e9 a7 99 ff 0f 0b e9 f7 fd ff ff e8 dd a7 99 ff <0f> 0b e9 1b fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c bc fc ff
RSP: 0018:ffffc9000279fdf0 EFLAGS: 00010287
RAX: ffffffff81de2343 RBX: ffff88802ef32400 RCX: 0000000000040000
RDX: ffffc900133ac000 RSI: 0000000000000046 RDI: 0000000000000047
RBP: ffff88802d117000 R08: dffffc0000000000 R09: fffffbfff1a27326
R10: fffffbfff1a27326 R11: 0000000000000000 R12: ffff888011937101
R13: 1ffff11008fce0f5 R14: ffff88802d1170d0 R15: ffff888047e707a8
FS:  00007f3fa3ee6700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000015a0004 CR3: 00000000124e6000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 filp_close+0xad/0x150 fs/open.c:1280
 do_dup2+0x3cc/0x410 fs/file.c:1024
 __do_sys_dup2 fs/file.c:1162 [inline]
 __se_sys_dup2+0x36/0x2a0 fs/file.c:1150
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 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:00007f3fa3ee5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000021
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 000000000119bfb8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007ffe94ac418f R14: 00007f3fa3ee69c0 R15: 000000000119bf8c