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ODEBUG: free active (active state 0) object: ffff88803c002cb8 object type: timer_list hint: cec_wait_timeout+0x0/0x180 include/media/cec.h:-1
WARNING: lib/debugobjects.c:632 at debug_print_object+0xec/0x230 lib/debugobjects.c:629, CPU#0: syz.4.1359/11865
Modules linked in:
CPU: 0 UID: 0 PID: 11865 Comm: syz.4.1359 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026
RIP: 0010:debug_print_object+0x18a/0x230 lib/debugobjects.c:629
Code: f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 5d 54 61 fd 4d 8b 0f 4c 89 ef 48 8b 74 24 08 48 89 ea 44 89 e1 4d 89 f0 ff 34 24 <67> 48 0f b9 3a 48 83 c4 08 ff 05 d3 4a e2 0a 48 83 c4 10 5b 41 5c
RSP: 0018:ffffc90005c2f830 EFLAGS: 00010246
RAX: 1ffffffff16dee00 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffffffff8bca6f40 RSI: ffffffff8bca69c0 RDI: ffffffff8fba55a0
RBP: ffffffff8bca6f40 R08: ffff88803c002cb8 R09: ffffffff8b6f8380
R10: dffffc0000000000 R11: ffffffff81b15790 R12: 0000000000000000
R13: ffffffff8fba55a0 R14: ffff88803c002cb8 R15: ffffffff8b6f7000
FS:  00007fe289ef46c0(0000) GS:ffff888125c49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe28bd2b540 CR3: 000000005e516000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __debug_check_no_obj_freed lib/debugobjects.c:1171 [inline]
 debug_check_no_obj_freed+0x2e3/0x450 lib/debugobjects.c:1201
 slab_free_hook mm/slub.c:2636 [inline]
 slab_free mm/slub.c:6405 [inline]
 kfree+0x13e/0x6c0 mm/slub.c:6720
 cec_transmit_msg_fh+0x16f0/0x24d0 drivers/media/cec/core/cec-adap.c:988
 cec_transmit drivers/media/cec/core/cec-api.c:230 [inline]
 cec_ioctl+0x2026/0x3060 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+0xff/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe28bcdde59
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:00007fe289ef4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe28bf66180 RCX: 00007fe28bcdde59
RDX: 0000200000000100 RSI: 00000000c0386105 RDI: 000000000000000a
RBP: 00007fe28bd73e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe28bf66218 R14: 00007fe28bf66180 R15: 00007ffdcbebff48
 </TASK>
----------------
Code disassembly (best guess):
   0:	f8                   	clc
   1:	48 c1 e8 03          	shr    $0x3,%rax
   5:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
   9:	74 08                	je     0x13
   b:	4c 89 ff             	mov    %r15,%rdi
   e:	e8 5d 54 61 fd       	call   0xfd615470
  13:	4d 8b 0f             	mov    (%r15),%r9
  16:	4c 89 ef             	mov    %r13,%rdi
  19:	48 8b 74 24 08       	mov    0x8(%rsp),%rsi
  1e:	48 89 ea             	mov    %rbp,%rdx
  21:	44 89 e1             	mov    %r12d,%ecx
  24:	4d 89 f0             	mov    %r14,%r8
  27:	ff 34 24             	push   (%rsp)
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	48 83 c4 08          	add    $0x8,%rsp
  33:	ff 05 d3 4a e2 0a    	incl   0xae24ad3(%rip)        # 0xae24b0c
  39:	48 83 c4 10          	add    $0x10,%rsp
  3d:	5b                   	pop    %rbx
  3e:	41 5c                	pop    %r12