------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 1 PID: 8498 at lib/refcount.c:31 refcount_warn_saturate+0x7d/0x140 lib/refcount.c:31
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 8498 Comm: syz-executor.0 Not tainted 5.7.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x128/0x182 lib/dump_stack.c:118
 panic+0x22a/0x4e3 kernel/panic.c:221
 __warn.cold.10+0x25/0x26 kernel/panic.c:582
 report_bug+0x1ad/0x270 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 do_error_trap+0x123/0x210 arch/x86/kernel/traps.c:267
 do_invalid_op+0x31/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:refcount_warn_saturate+0x7d/0x140 lib/refcount.c:31
Code: 12 6a 6e 06 00 0f 84 ba 00 00 00 5b 5d c3 80 3d 01 6a 6e 06 00 75 f4 48 c7 c7 60 84 ce 87 c6 05 f1 69 6e 06 01 e8 df 6a f2 fd <0f> 0b eb dd 80 3d e5 69 6e 06 00 75 d4 48 c7 c7 00 83 ce 87 c6 05
RSP: 0018:ffffc90009be7d38 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffff8880a15cad2c RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000007 RDI: ffffffff8b8ef160
RBP: 0000000000000004 R08: ffffed1015d245f1 R09: ffffed1015d245f1
R10: ffff8880ae922f83 R11: ffffed1015d245f0 R12: ffff888092c74518
R13: ffff8880a15cad2c R14: ffff8880a7ac4e88 R15: ffff8880a7ac4eb8
 refcount_dec include/linux/refcount.h:310 [inline]
 io_poll_remove_double+0x26b/0x330 fs/io_uring.c:4165
 io_poll_remove_one+0x3f2/0x800 fs/io_uring.c:4473
 io_poll_remove_all fs/io_uring.c:4515 [inline]
 io_ring_ctx_wait_and_kill+0x294/0x5d0 fs/io_uring.c:7415
 io_uring_release+0x39/0x50 fs/io_uring.c:7434
 __fput+0x2a4/0x7a0 fs/file_table.c:280
 task_work_run+0xc2/0x160 kernel/task_work.c:123
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x23d/0x2d0 arch/x86/entry/common.c:165
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:279 [inline]
 do_syscall_64+0x52a/0x620 arch/x86/entry/common.c:305
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45d28a
Code: 89 f5 41 54 49 89 fc 55 53 74 35 49 63 e8 48 63 da 4d 89 f9 49 89 e8 4d 63 d6 48 89 da 4c 89 ee 4c 89 e7 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 4e 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f 1f 00
RSP: 002b:00007f163c2e3bc8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: 0000000020ffb000 RBX: 0000000000000003 RCX: 000000000045d28a
RDX: 0000000000000003 RSI: 0000000000200000 RDI: 0000000020ffb000
RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000010000000
R10: 0000000000008011 R11: 0000000000000206 R12: 0000000020ffb000
R13: 0000000000200000 R14: 0000000000008011 R15: 0000000010000000

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