BUG: kernel NULL pointer dereference, address: 000000000000008c
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 11a242067 P4D 11a242067 PUD 119793067 PMD 0 
Oops: 0002 [#1] PREEMPT SMP
CPU: 0 PID: 7828 Comm: syz-executor.4 Not tainted 6.6.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:inherit_group kernel/events/core.c:13375 [inline]
RIP: 0010:inherit_task_group.isra.0+0x107/0x280 kernel/events/core.c:13422
Code: f0 ff ff 0f 87 7d 01 00 00 e8 35 d4 f8 ff 48 3b 9b 90 00 00 00 0f 84 8a 00 00 00 e8 23 d4 f8 ff 8b 83 8c 00 00 00 48 8b 14 24 <89> 82 8c 00 00 00 31 ed e8 0c d4 f8 ff 89 e8 48 83 c4 08 5b 5d 41
RSP: 0018:ffffc900034c7c90 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88810df57230 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81341a4d RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: fffffffffffff000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88810df57230
R13: ffff88811a600000 R14: ffffc900034c7cdc R15: ffff88810cf24200
FS:  00007fec0f4ac6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000008c CR3: 000000011a13f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 perf_event_init_context kernel/events/core.c:13487 [inline]
 perf_event_init_task+0x1ce/0x3b0 kernel/events/core.c:13538
 copy_process+0xc2a/0x26d0 kernel/fork.c:2475
 kernel_clone+0x109/0x750 kernel/fork.c:2909
 __do_sys_clone+0x7c/0xb0 kernel/fork.c:3052
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fec0f929ae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fec0f4ac078 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fec0fa48f80 RCX: 00007fec0f929ae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fec0f97547a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fec0fa48f80 R15: 00007fff441827a8
 </TASK>
Modules linked in:
CR2: 000000000000008c
---[ end trace 0000000000000000 ]---
RIP: 0010:inherit_group kernel/events/core.c:13375 [inline]
RIP: 0010:inherit_task_group.isra.0+0x107/0x280 kernel/events/core.c:13422
Code: f0 ff ff 0f 87 7d 01 00 00 e8 35 d4 f8 ff 48 3b 9b 90 00 00 00 0f 84 8a 00 00 00 e8 23 d4 f8 ff 8b 83 8c 00 00 00 48 8b 14 24 <89> 82 8c 00 00 00 31 ed e8 0c d4 f8 ff 89 e8 48 83 c4 08 5b 5d 41
RSP: 0018:ffffc900034c7c90 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88810df57230 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81341a4d RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: fffffffffffff000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88810df57230
R13: ffff88811a600000 R14: ffffc900034c7cdc R15: ffff88810cf24200
FS:  00007fec0f4ac6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000008c CR3: 000000011a13f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	f0 ff                	lock (bad)
   2:	ff 0f                	decl   (%rdi)
   4:	87 7d 01             	xchg   %edi,0x1(%rbp)
   7:	00 00                	add    %al,(%rax)
   9:	e8 35 d4 f8 ff       	call   0xfff8d443
   e:	48 3b 9b 90 00 00 00 	cmp    0x90(%rbx),%rbx
  15:	0f 84 8a 00 00 00    	je     0xa5
  1b:	e8 23 d4 f8 ff       	call   0xfff8d443
  20:	8b 83 8c 00 00 00    	mov    0x8c(%rbx),%eax
  26:	48 8b 14 24          	mov    (%rsp),%rdx
* 2a:	89 82 8c 00 00 00    	mov    %eax,0x8c(%rdx) <-- trapping instruction
  30:	31 ed                	xor    %ebp,%ebp
  32:	e8 0c d4 f8 ff       	call   0xfff8d443
  37:	89 e8                	mov    %ebp,%eax
  39:	48 83 c4 08          	add    $0x8,%rsp
  3d:	5b                   	pop    %rbx
  3e:	5d                   	pop    %rbp
  3f:	41                   	rex.B