------------[ 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: 0 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 0 PID: 0 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
WARNING: CPU: 0 PID: 0 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1009
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
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 38 ae bd fd 4c 8b 45 00 48 c7 c7 00 1b df 8a 48 c7 c6 c0 17 df 8a 48 c7 c2 60 1c df 8a 8b 0c 24 4d 89 e9 e8 b4 11 38 fd <0f> 0b 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc ff df ff 05 b5 53 0a
RSP: 0018:ffffc90000007a10 EFLAGS: 00010246
RAX: 2340d8519341c400 RBX: ffffffff96e17fb0 RCX: ffffffff8c8bc740
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8a8dee20 R08: ffffc90000007687 R09: 1ffff92000000ed0
R10: dffffc0000000000 R11: fffff52000000ed1 R12: ffff888059a47e00
R13: ffffffff892b8f80 R14: ffff888059a47000 R15: ffff888059a47c90
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f55e9780d58 CR3: 0000000027451000 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:tick_nohz_idle_enter+0x217/0x2e0 kernel/time/tick-sched.c:1184
Code: 00 fc ff df 41 0f b6 04 1e 84 c0 0f 85 bb 00 00 00 41 80 0c 24 04 e8 d8 1e eb ff e8 93 d0 12 00 fb 48 c7 44 24 20 0e 36 e0 45 <48> 8b 44 24 18 48 c7 04 18 00 00 00 00 65 48 8b 04 25 28 00 00 00
RSP: 0018:ffffffff8c807ce0 EFLAGS: 00000282
RAX: 2340d8519341c400 RBX: dffffc0000000000 RCX: 2340d8519341c400
RDX: dffffc0000000000 RSI: ffffffff8a8c10a0 RDI: ffffffff8adf11a0
RBP: ffffffff8c807d90 R08: ffffffff8fa0e008 R09: ffffffff8fa0e018
R10: ffffffff8fa0e010 R11: ffffffff8fa0e003 R12: ffff8880b8e2af4c
R13: dffffc0000000000 R14: 1ffff110171c55e9 R15: 0000006b50f91b8b
 do_idle+0xa2/0x680 kernel/sched/idle.c:297
 cpu_startup_entry+0x3f/0x60 kernel/sched/idle.c:422
 rest_init+0x2dc/0x300 init/main.c:745
 arch_call_rest_init+0xa/0xa init/main.c:905
 start_kernel+0x493/0x53c init/main.c:1152
 secondary_startup_64_no_verify+0xcf/0xdb
 </TASK>
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	41 0f b6 04 1e       	movzbl (%r14,%rbx,1),%eax
   5:	84 c0                	test   %al,%al
   7:	0f 85 bb 00 00 00    	jne    0xc8
   d:	41 80 0c 24 04       	orb    $0x4,(%r12)
  12:	e8 d8 1e eb ff       	call   0xffeb1eef
  17:	e8 93 d0 12 00       	call   0x12d0af
  1c:	fb                   	sti
  1d:	48 c7 44 24 20 0e 36 	movq   $0x45e0360e,0x20(%rsp)
  24:	e0 45
* 26:	48 8b 44 24 18       	mov    0x18(%rsp),%rax <-- trapping instruction
  2b:	48 c7 04 18 00 00 00 	movq   $0x0,(%rax,%rbx,1)
  32:	00
  33:	65 48 8b 04 25 28 00 	mov    %gs:0x28,%rax
  3a:	00 00