------------[ cut here ]------------ WARNING: CPU: 0 PID: 6053 at fs/io_uring.c:1546 req_ref_put fs/io_uring.c:1546 [inline] WARNING: CPU: 0 PID: 6053 at fs/io_uring.c:1546 req_ref_put fs/io_uring.c:1544 [inline] WARNING: CPU: 0 PID: 6053 at fs/io_uring.c:1546 io_poll_double_wake+0x4fb/0x760 fs/io_uring.c:4986 Modules linked in: CPU: 0 PID: 6053 Comm: syz-executor.1 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:ffffc900098ffc20 EFLAGS: 00010016 RAX: 0000000000006d8c RBX: 0000000000000001 RCX: ffffc9000bddc000 RDX: 0000000000040000 RSI: ffffffff81dfdcfb RDI: 0000000000000003 RBP: ffff88802cdb1cdc R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff81dfdce6 R11: 0000000000000000 R12: ffff88802cdb1c80 R13: 0000000000000000 R14: ffff88802cdb1cb0 R15: ffff88807798caa0 FS: 00007f2e87c0b700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e87c0b718 CR3: 00000000343fe000 CR4: 00000000001506f0 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 pty_close+0x224/0x4f0 drivers/tty/pty.c:68 tty_release+0x45e/0x1200 drivers/tty/tty_io.c:1771 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 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:00007f2e87c0b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 RAX: 0000000000000004 RBX: 000000000056c038 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000006 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 0000000000a9fb1f R14: 00007f2e87c0b300 R15: 0000000000022000