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percpu_ref_kill_and_confirm called more than once on io_ring_ctx_ref_free!
WARNING: CPU: 1 PID: 29871 at lib/percpu-refcount.c:382 percpu_ref_kill_and_confirm+0x126/0x180 lib/percpu-refcount.c:382
Modules linked in:
CPU: 1 PID: 29871 Comm: syz-executor.2 Not tainted 5.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:percpu_ref_kill_and_confirm+0x126/0x180 lib/percpu-refcount.c:382
Code: 5d 08 48 8d 7b 08 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5d 48 8b 53 08 48 c7 c6 00 5d 9d 89 48 c7 c7 60 5c 9d 89 e8 8c f5 f6 04 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02
RSP: 0018:ffffc9000a6ffe18 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff88801c3c5b80 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff81592ba5 RDI: fffff520014dffb5
RBP: ffff88804f56b000 R08: 0000000000000001 R09: ffff8880b9f2015b
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000246
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888054a07490
FS:  00007efd603be700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000015a0004 CR3: 00000000523eb000 CR4: 0000000000350ee0
Call Trace:
 percpu_ref_kill include/linux/percpu-refcount.h:149 [inline]
 io_ring_ctx_wait_and_kill+0x2b/0x450 fs/io_uring.c:8382
 io_uring_release+0x3e/0x50 fs/io_uring.c:8420
 __fput+0x285/0x920 fs/file_table.c:281
 task_work_run+0xdd/0x190 kernel/task_work.c:168
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:174 [inline]
 exit_to_user_mode_prepare+0x1f0/0x200 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e159
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:00007efd603bdbe8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9
RAX: fffffffffffffff4 RBX: 00000000200001c0 RCX: 000000000045e159
RDX: 0000000020ffc000 RSI: 00000000200001c0 RDI: 00000000000026dd
RBP: 00007efd603bdca0 R08: 00000000200002c0 R09: 00000000200002c0
R10: 0000000020000240 R11: 0000000000000206 R12: 0000000020ffc000
R13: 0000000020ffc000 R14: 00000000200002c0 R15: 0000000020000240