Re: [PATCH v4 3/3] fanotify: introduce event response identifier

[kernel test robot <oliver.sang@intel.com>]

Hello,

kernel test robot noticed "INFO:trying_to_register_non-static_key" on:

commit: 16091e7d62ae910fee1e3bfc72943ec678e8df35 ("[PATCH v4 3/3] fanotify: introduce event response identifier")
url: https://github.com/intel-lab-lkp/linux/commits/Ibrahim-Jirdeh/fanotify-add-support-for-a-variable-length-permission-event/20250712-023425
base: https://git.kernel.org/cgit/linux/kernel/git/jack/linux-fs.git fsnotify
patch link: https://lore.kernel.org/all/20250711183101.4074140-4-ibrahimjirdeh@meta.com/
patch subject: [PATCH v4 3/3] fanotify: introduce event response identifier

in testcase: trinity
version: 
with following parameters:

	runtime: 300s
	group: group-01
	nr_groups: 5



config: x86_64-randconfig-006-20250712
compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

(please refer to attached dmesg/kmsg for entire log/backtrace)


+----------------------------------------+------------+------------+
|                                        | feb842cee4 | 16091e7d62 |
+----------------------------------------+------------+------------+
| INFO:trying_to_register_non-static_key | 0          | 11         |
+----------------------------------------+------------+------------+


If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202507160713.34ee11f5-lkp@intel.com


[  570.145604][ T3660] INFO: trying to register non-static key.
[  570.152934][ T3660] The code is fine but needs lockdep annotation, or maybe
[  570.161254][ T3660] you didn't initialize this object before use?
[  570.168674][ T3660] turning off the locking correctness validator.
[  570.176388][ T3660] CPU: 0 UID: 0 PID: 3660 Comm: trinity-c3 Not tainted 6.16.0-rc3-00238-g16091e7d62ae #1 PREEMPT(lazy)
[  570.189708][ T3660] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  570.202248][ T3660] Call Trace:
[  570.206437][ T3660]  <TASK>
[ 570.210125][ T3660] dump_stack_lvl (arch/x86/include/asm/irqflags.h:26 (discriminator 3) arch/x86/include/asm/irqflags.h:109 (discriminator 3) arch/x86/include/asm/irqflags.h:151 (discriminator 3) lib/dump_stack.c:123 (discriminator 3)) 
[ 570.215892][ T3660] dump_stack (lib/dump_stack.c:130) 
[ 570.220985][ T3660] register_lock_class (kernel/locking/lockdep.c:988 kernel/locking/lockdep.c:1302) 
[ 570.227173][ T3660] __lock_acquire (kernel/locking/lockdep.c:5116) 
[ 570.232580][ T3660] lock_acquire (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 570.237898][ T3660] ? ida_destroy (lib/idr.c:615) 
[ 570.243703][ T3660] ? _raw_spin_lock_irqsave (include/linux/spinlock_api_smp.h:110 kernel/locking/spinlock.c:162) 
[ 570.250176][ T3660] ? ida_destroy (lib/idr.c:615) 
[ 570.255813][ T3660] ? trace_preempt_off (kernel/trace/trace_preemptirq.c:128) 
[ 570.261457][ T3660] ? ida_destroy (lib/idr.c:615) 
[ 570.266841][ T3660] _raw_spin_lock_irqsave (include/linux/spinlock_api_smp.h:111 kernel/locking/spinlock.c:162) 
[ 570.272831][ T3660] ? ida_destroy (lib/idr.c:615) 
[ 570.278373][ T3660] ida_destroy (lib/idr.c:615) 
[ 570.283784][ T3660] ? xas_next_entry (include/trace/events/filemap.h:49) 
[ 570.290885][ T3660] ? kfree (mm/slub.c:2312 mm/slub.c:4643 mm/slub.c:4842) 
[ 570.295967][ T3660] fanotify_free_group_priv (fs/notify/fanotify/fanotify.c:1049) 
[ 570.302446][ T3660] fsnotify_put_group (fs/notify/group.c:28 fs/notify/group.c:110) 
[ 570.308643][ T3660] fsnotify_destroy_group (fs/notify/group.c:51) 
[ 570.315249][ T3660] ? fsnotify_group_stop_queueing (fs/notify/group.c:51) 
[ 570.322447][ T3660] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 570.329051][ T3660] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 570.335640][ T3660] ? __init_waitqueue_head (include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 570.342015][ T3660] __do_sys_fanotify_init (fs/notify/fanotify/fanotify_user.c:1718) 
[ 570.348111][ T3660] ? __rcu_read_unlock (kernel/rcu/tree_plugin.h:445 (discriminator 3)) 
[ 570.353754][ T3660] __x64_sys_fanotify_init (fs/notify/fanotify/fanotify_user.c:1526) 
[ 570.360325][ T3660] ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:80 (discriminator 22)) 
[ 570.366287][ T3660] x64_sys_call (arch/x86/entry/syscall_64.c:41) 
[ 570.371831][ T3660] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 570.377436][ T3660] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  570.384571][ T3660] RIP: 0033:0x463519
[ 570.389240][ T3660] Code: 00 f3 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 0f 83 db 59 00 00 c3 66 2e 0f 1f 84 00 00 00 00
All code
========
   0:	00 f3                	add    %dh,%bl
   2:	c3                   	ret
   3:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   a:	00 00 00 
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	0f 83 db 59 00 00    	jae    0x5a11
  36:	c3                   	ret
  37:	66                   	data16
  38:	2e                   	cs
  39:	0f                   	.byte 0xf
  3a:	1f                   	(bad)
  3b:	84 00                	test   %al,(%rax)
  3d:	00 00                	add    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	0f 83 db 59 00 00    	jae    0x59e7
   c:	c3                   	ret
   d:	66                   	data16
   e:	2e                   	cs
   f:	0f                   	.byte 0xf
  10:	1f                   	(bad)
  11:	84 00                	test   %al,(%rax)
  13:	00 00                	add    %al,(%rax)
	...
[  570.411823][ T3660] RSP: 002b:00007fff92c9e6d8 EFLAGS: 00000246 ORIG_RAX: 000000000000012c
[  570.421741][ T3660] RAX: ffffffffffffffda RBX: 000000000000012c RCX: 0000000000463519
[  570.430814][ T3660] RDX: 0000000004000055 RSI: 00000000001c1400 RDI: 000000000000002c
[  570.440208][ T3660] RBP: 00007f4a06748000 R08: ffffffffffffffb7 R09: 0000000000000000
[  570.449706][ T3660] R10: 0000000000002c85 R11: 0000000000000246 R12: 0000000000000002
[  570.458904][ T3660] R13: 00007f4a06748058 R14: 0000000036007850 R15: 00007f4a06748000
[  570.468210][ T3660]  </TASK>


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250716/202507160713.34ee11f5-lkp@intel.com



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0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki