------------[ cut here ]------------
unexpected event refcount: 2; ptr=ffff88807a9f1820
WARNING: CPU: 1 PID: 5758 at kernel/events/core.c:5256 free_event kernel/events/core.c:5254 [inline]
WARNING: CPU: 1 PID: 5758 at kernel/events/core.c:5256 perf_event_release_kernel+0x798/0x880 kernel/events/core.c:5421
Modules linked in:
CPU: 1 PID: 5758 Comm: syz-executor.0 Not tainted 6.7.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:free_event kernel/events/core.c:5254 [inline]
RIP: 0010:perf_event_release_kernel+0x798/0x880 kernel/events/core.c:5421
Code: 00 fc ff df 80 3c 08 00 48 8b 5c 24 20 74 08 4c 89 e7 e8 7b 3f 31 00 49 8b 34 24 48 c7 c7 40 a5 32 8b 4c 89 fa e8 18 7a 9b ff <0f> 0b eb 82 e8 cf 33 d5 ff eb 05 e8 c8 33 d5 ff 4c 8b 7c 24 18 49
RSP: 0018:ffffc90009be7800 EFLAGS: 00010246
RAX: 3ac2420605a2e200 RBX: ffffc90009be7880 RCX: ffff88807ab9bb80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90009be7900 R08: ffffffff81536c72 R09: 1ffff11017325172
R10: dffffc0000000000 R11: ffffed1017325173 R12: ffff88807a9f1a58
R13: 1ffff1100f53e360 R14: dead000000000100 R15: ffff88807a9f1820
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f052999d988 CR3: 000000001aceb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 perf_release+0x3b/0x40 kernel/events/core.c:5442
 __fput+0x3cc/0x9e0 fs/file_table.c:394
 task_work_run+0x24a/0x300 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa2c/0x2740 kernel/exit.c:869
 do_group_exit+0x206/0x2c0 kernel/exit.c:1018
 get_signal+0x1769/0x1840 kernel/signal.c:2904
 arch_do_signal_or_restart+0x96/0x830 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>