------------[ cut here ]------------
WARNING: CPU: 1 PID: 10237 at fs/io_uring.c:1535 req_ref_put fs/io_uring.c:1535 [inline]
WARNING: CPU: 1 PID: 10237 at fs/io_uring.c:1535 io_poll_double_wake+0x545/0x5c0 fs/io_uring.c:4974
Modules linked in:
CPU: 1 PID: 10237 Comm: syz-executor.4 Not tainted 5.14.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:req_ref_put fs/io_uring.c:1535 [inline]
RIP: 0010:io_poll_double_wake+0x545/0x5c0 fs/io_uring.c:4974
Code: 24 e8 af c3 91 ff bd 01 00 00 00 89 e8 48 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 94 c3 91 ff 0f 0b eb b7 e8 8b c3 91 ff <0f> 0b eb d8 89 d9 80 e1 07 38 c1 0f 8c 13 fb ff ff 48 89 df e8 f2
RSP: 0018:ffffc90009bdf668 EFLAGS: 00010087
RAX: ffffffff81ee5e85 RBX: 0000000000000001 RCX: 0000000000040000
RDX: ffffc90011fd7000 RSI: 0000000000001c98 RDI: 0000000000001c99
RBP: ffff8880210d43c8 R08: ffffffff81ee5e58 R09: ffffed100421a884
R10: ffffed100421a884 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880210d43c0 R14: ffff8880210d441c R15: 1ffff1100421a879
FS:  00007fe6da6e3700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000519b70 CR3: 000000009d688000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __wake_up_common+0x2aa/0x4e0 kernel/sched/wait.c:108
 __wake_up_common_lock kernel/sched/wait.c:138 [inline]
 __wake_up+0x145/0x210 kernel/sched/wait.c:157
 n_tty_set_termios+0xc42/0x1080 drivers/tty/n_tty.c:1806
 tty_set_termios+0xd43/0x15e0 drivers/tty/tty_ioctl.c:365
 set_termios+0x5e4/0x6e0 drivers/tty/tty_ioctl.c:438
 tty_mode_ioctl+0x5b6/0xac0 drivers/tty/tty_ioctl.c:756
 tty_ioctl+0xfe5/0x1720 drivers/tty/tty_io.c:2814
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:1069 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:1055
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe6da6e3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 00000000200001c0 RSI: 0000000000005408 RDI: 0000000000000003
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffdd5e1824f R14: 00007fe6da6e3300 R15: 0000000000022000