------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: timer_list hint: rose_transmit_restart_request net/rose/rose_link.c:-1 [inline]
ODEBUG: free active (active state 0) object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:284
WARNING: CPU: 0 PID: 4315 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 0 PID: 4315 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
WARNING: CPU: 0 PID: 4315 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1009
Modules linked in:
CPU: 0 PID: 4315 Comm: kworker/0:5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: rcu_gp process_srcu
RIP: 0010:debug_print_object lib/debugobjects.c:515 [inline]
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
RIP: 0010:debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1009
Code: ef e8 48 cc bd fd 4c 8b 45 00 48 c7 c7 c0 18 df 8a 48 c7 c6 80 15 df 8a 48 c7 c2 20 1a df 8a 8b 0c 24 4d 89 e9 e8 34 52 38 fd <0f> 0b 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc ff df ff 05 a5 7a 0a
RSP: 0018:ffffc90000007a10 EFLAGS: 00010246
RAX: 768d43ebaf2c5500 RBX: ffffffff96e3bf90 RCX: ffff888019b6bb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8a8def40 R08: ffffc90000007687 R09: 1ffff92000000ed0
R10: dffffc0000000000 R11: fffff52000000ed1 R12: ffff8880586cca00
R13: ffffffff892aadc0 R14: ffff8880586cc000 R15: ffff8880586cc890
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f77081456b8 CR3: 000000000c88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 slab_free_hook mm/slub.c:1704 [inline]
 slab_free_freelist_hook+0xd2/0x1a0 mm/slub.c:1755
 slab_free mm/slub.c:3687 [inline]
 __kmem_cache_free+0xb6/0x1f0 mm/slub.c:3700
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x4a7/0x5d0 net/rose/rose_timer.c:183
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:delay_tsc+0x5c/0xc0 arch/x86/lib/delay.c:79
Code: c1 e7 20 49 09 c7 4d 29 f7 49 39 df 73 53 bf 01 00 00 00 e8 76 68 38 f7 65 8b 05 37 ed e1 75 85 c0 74 1c f3 90 bf 01 00 00 00 <e8> cf 66 38 f7 e8 fa 97 0c 00 39 c5 75 0e 0f 01 f9 66 90 eb bd e8
RSP: 0018:ffffc900049f7ab8 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 0000000000002af9 RCX: 0000000000000000
RDX: 00000000000000b9 RSI: ffffffff8adf0f40 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8e1fd76f R09: 1ffffffff1c3faed
R10: dffffc0000000000 R11: fffffbfff1c3faee R12: ffff8880b8f44008
R13: dffffc0000000000 R14: 000000b9f18c6298 R15: 00000000000005de
 try_check_zero+0x3bf/0x3e0 kernel/rcu/srcutree.c:975
 srcu_advance_state kernel/rcu/srcutree.c:1549 [inline]
 process_srcu+0x1a0/0x1180 kernel/rcu/srcutree.c:1651
 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess):
   0:	c1 e7 20             	shl    $0x20,%edi
   3:	49 09 c7             	or     %rax,%r15
   6:	4d 29 f7             	sub    %r14,%r15
   9:	49 39 df             	cmp    %rbx,%r15
   c:	73 53                	jae    0x61
   e:	bf 01 00 00 00       	mov    $0x1,%edi
  13:	e8 76 68 38 f7       	call   0xf738688e
  18:	65 8b 05 37 ed e1 75 	mov    %gs:0x75e1ed37(%rip),%eax        # 0x75e1ed56
  1f:	85 c0                	test   %eax,%eax
  21:	74 1c                	je     0x3f
  23:	f3 90                	pause
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 cf 66 38 f7       	call   0xf73866fe <-- trapping instruction
  2f:	e8 fa 97 0c 00       	call   0xc982e
  34:	39 c5                	cmp    %eax,%ebp
  36:	75 0e                	jne    0x46
  38:	0f 01 f9             	rdtscp
  3b:	66 90                	xchg   %ax,%ax
  3d:	eb bd                	jmp    0xfffffffc
  3f:	e8                   	.byte 0xe8