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ODEBUG: free active (active state 0) object: ffff888052ef80b8 object type: timer_list hint: cec_wait_timeout+0x0/0x1f0 drivers/media/cec/core/cec-adap.c:414
WARNING: lib/debugobjects.c:629 at debug_print_object+0x198/0x2b0 lib/debugobjects.c:629, CPU#1: syz.0.716/10349
Modules linked in:
CPU: 1 UID: 0 PID: 10349 Comm: syz.0.716 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:debug_print_object+0x1a5/0x2b0 lib/debugobjects.c:629
Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4f 48 8d 3d 18 76 25 0c 41 56 48 8b 14 ed 40 37 60 8c 4c 89 e6 <67> 48 0f b9 3a 58 83 05 22 6d 1a 0c 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0018:ffffc9000497f978 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc9000497fa60 RCX: 0000000000000000
RDX: ffffffff8c603680 RSI: ffffffff8c603220 RDI: ffffffff914d8350
RBP: 0000000000000003 R08: ffff888052ef80b8 R09: ffffffff8bf2f9e0
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c603220
R13: ffffffff8bf2fa20 R14: ffffffff8822fea0 R15: ffffc9000497fa78
FS:  00007f079e2e06c0(0000) GS:ffff888123cd4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33010ff8 CR3: 000000007a191000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __debug_check_no_obj_freed lib/debugobjects.c:1171 [inline]
 debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1201
 slab_free_hook mm/slub.c:2608 [inline]
 slab_free mm/slub.c:6377 [inline]
 kfree+0x3d6/0x6c0 mm/slub.c:6692
 cec_transmit_msg_fh+0x1516/0x2780 drivers/media/cec/core/cec-adap.c:988
 cec_transmit drivers/media/cec/core/cec-api.c:230 [inline]
 cec_ioctl+0x1565/0x29b0 drivers/media/cec/core/cec-api.c:534
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f079d39e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f079e2e0028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f079d626270 RCX: 00007f079d39e0d9
RDX: 0000200000000100 RSI: 00000000c0386105 RDI: 0000000000000005
RBP: 00007f079d435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f079d626308 R14: 00007f079d626270 R15: 00007ffee27430d8
 </TASK>
----------------
Code disassembly (best guess):
   0:	b8 00 00 00 00       	mov    $0x0,%eax
   5:	00 fc                	add    %bh,%ah
   7:	ff                   	lcall  (bad)
   8:	df 48 89             	fisttps -0x77(%rax)
   b:	fa                   	cli
   c:	48 c1 ea 03          	shr    $0x3,%rdx
  10:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  14:	75 4f                	jne    0x65
  16:	48 8d 3d 18 76 25 0c 	lea    0xc257618(%rip),%rdi        # 0xc257635
  1d:	41 56                	push   %r14
  1f:	48 8b 14 ed 40 37 60 	mov    -0x739fc8c0(,%rbp,8),%rdx
  26:	8c
  27:	4c 89 e6             	mov    %r12,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	58                   	pop    %rax
  30:	83 05 22 6d 1a 0c 01 	addl   $0x1,0xc1a6d22(%rip)        # 0xc1a6d59
  37:	48 83 c4 18          	add    $0x18,%rsp
  3b:	5b                   	pop    %rbx
  3c:	5d                   	pop    %rbp
  3d:	41 5c                	pop    %r12
  3f:	41                   	rex.B