------------[ cut here ]------------ WARNING: CPU: 1 PID: 10932 at fs/io_uring.c:1546 req_ref_put fs/io_uring.c:1546 [inline] WARNING: CPU: 1 PID: 10932 at fs/io_uring.c:1546 req_ref_put fs/io_uring.c:1544 [inline] WARNING: CPU: 1 PID: 10932 at fs/io_uring.c:1546 io_poll_double_wake+0x4fb/0x760 fs/io_uring.c:4986 Modules linked in: CPU: 1 PID: 10932 Comm: (agetty) Not tainted 5.14.0-rc3-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:1546 [inline] RIP: 0010:req_ref_put fs/io_uring.c:1544 [inline] RIP: 0010:io_poll_double_wake+0x4fb/0x760 fs/io_uring.c:4986 Code: e2 db ff f0 41 ff 4c 24 5c 0f 94 c3 31 ff 89 de e8 4a b4 95 ff 84 db b8 01 00 00 00 0f 84 6f fc ff ff 89 04 24 e8 f5 ad 95 ff <0f> 0b 8b 04 24 e9 5d fc ff ff e8 e6 ad 95 ff 4c 89 e5 e9 a1 fb ff RSP: 0018:ffffc900024bfad8 EFLAGS: 00010093 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888018e70000 RSI: ffffffff81dfdcfb RDI: 0000000000000003 RBP: ffff88804ee66a5c R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff81dfdce6 R11: 0000000000000000 R12: ffff88804ee66a00 R13: 0000000000000000 R14: ffff88804ee66a30 R15: ffff888057d58620 FS: 00007fa900eac500(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004e4b21 CR3: 0000000057c55000 CR4: 0000000000350ee0 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_ldisc_hangup+0x200/0x680 drivers/tty/tty_ldisc.c:738 __tty_hangup.part.0+0x40a/0x830 drivers/tty/tty_io.c:639 __tty_hangup drivers/tty/tty_io.c:594 [inline] tty_vhangup drivers/tty/tty_io.c:711 [inline] tty_ioctl+0xf6a/0x1600 drivers/tty/tty_io.c:2745 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: 0033:0x7fa8ff47b017 Code: 00 00 00 48 8b 05 81 7e 2b 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 7e 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffcd49c8898 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa8ff47b017 RDX: 0000000000000013 RSI: 0000000000005437 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007ffcd49c8830 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000055ca837c7328 R13: 00007ffcd49c88c0 R14: 000055ca837c6f00 R15: 00007ffcd49c8b40