------------[ cut here ]------------ WARNING: CPU: 1 PID: 10216 at fs/io_uring.c:1535 req_ref_put fs/io_uring.c:1535 [inline] WARNING: CPU: 1 PID: 10216 at fs/io_uring.c:1535 req_ref_put fs/io_uring.c:1533 [inline] WARNING: CPU: 1 PID: 10216 at fs/io_uring.c:1535 io_poll_double_wake+0x4fb/0x760 fs/io_uring.c:4974 Modules linked in: CPU: 1 PID: 10216 Comm: syz-executor.1 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:req_ref_put fs/io_uring.c:1533 [inline] RIP: 0010:io_poll_double_wake+0x4fb/0x760 fs/io_uring.c:4974 Code: d9 db ff f0 41 ff 4c 24 5c 0f 94 c3 31 ff 89 de e8 6a ba 95 ff 84 db b8 01 00 00 00 0f 84 6f fc ff ff 89 04 24 e8 15 b4 95 ff <0f> 0b 8b 04 24 e9 5d fc ff ff e8 06 b4 95 ff 4c 89 e5 e9 a1 fb ff RSP: 0018:ffffc9000155fb50 EFLAGS: 00010012 RAX: 0000000000008339 RBX: 0000000000000001 RCX: ffffc9000bcb4000 RDX: 0000000000040000 RSI: ffffffff81dfd4bb RDI: 0000000000000003 RBP: ffff8880269417dc R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff81dfd4a6 R11: 0000000000000000 R12: ffff888026941780 R13: 0000000000000000 R14: ffff8880269417b0 R15: ffff8880268d6420 FS: 00007f6dbe5f2700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f56058e5d58 CR3: 0000000022e6d000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __wake_up_common+0x147/0x650 kernel/sched/wait.c:108 __wake_up_common_lock+0xd0/0x130 kernel/sched/wait.c:138 tty_ldisc_lock+0x55/0xb0 drivers/tty/tty_ldisc.c:322 tty_set_ldisc+0x8e/0x680 drivers/tty/tty_ldisc.c:551 tiocsetd drivers/tty/tty_io.c:2455 [inline] tty_ioctl+0xa8b/0x1600 drivers/tty/tty_io.c:2741 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 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:00007f6dbe5f2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000020000080 RSI: 0000000000005423 RDI: 0000000000000003 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 0000000000a9fb1f R14: 00007f6dbe5f2300 R15: 0000000000022000