------------[ 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: 7 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 0 PID: 7 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
WARNING: CPU: 0 PID: 7 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1009
Modules linked in:
CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
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 a8 74 c5 fd 4c 8b 45 00 48 c7 c7 80 02 bf 8a 48 c7 c6 40 ff be 8a 48 c7 c2 e0 03 bf 8a 8b 0c 24 4d 89 e9 e8 b4 5e 41 fd <0f> 0b 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc ff df ff 05 55 a6 f3
RSP: 0018:ffffc90000007a10 EFLAGS: 00010246
RAX: c77069b8ac2ba300 RBX: ffffffff96bf3000 RCX: ffff88813fe53b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8a6de320 R08: dffffc0000000000 R09: fffffbfff2119072
R10: fffffbfff2119072 R11: 1ffffffff2119071 R12: ffff888079171e00
R13: ffffffff8911f750 R14: ffff888079171000 R15: ffff888079171c90
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000d000 CR3: 0000000028897000 CR4: 00000000003526f0
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+0x1a0/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x529/0x7d0 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 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:check_region_inline mm/kasan/generic.c:172 [inline]
RIP: 0010:kasan_check_range+0x1c/0x290 mm/kasan/generic.c:189
Code: ff c3 00 00 cc cc 00 00 cc cc 00 00 cc cc b0 01 48 85 f6 0f 84 a4 01 00 00 41 57 41 56 53 49 89 f8 49 01 f0 0f 82 57 02 00 00 <49> 89 f8 49 c1 e8 2f 41 81 f8 ff ff 01 00 0f 82 43 02 00 00 49 bf
RSP: 0018:ffffc900000c7aa0 EFLAGS: 00000296
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff81638475
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8dff0e28
RBP: ffffc900000c7bc8 R08: ffffffff8dff0e30 R09: 0000000000000003
R10: fffff52000018f6c R11: 1ffff92000018f6c R12: ffff8880597987a8
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000018f64
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 cpumask_test_cpu include/linux/cpumask.h:444 [inline]
 cpu_online include/linux/cpumask.h:1030 [inline]
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0xc5/0x910 kernel/locking/lockdep.c:5673
 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
 _raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 wg_ratelimiter_gc_entries+0x380/0x450 drivers/net/wireguard/ratelimiter.c:76
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 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:	ff c3                	inc    %ebx
   2:	00 00                	add    %al,(%rax)
   4:	cc                   	int3
   5:	cc                   	int3
   6:	00 00                	add    %al,(%rax)
   8:	cc                   	int3
   9:	cc                   	int3
   a:	00 00                	add    %al,(%rax)
   c:	cc                   	int3
   d:	cc                   	int3
   e:	b0 01                	mov    $0x1,%al
  10:	48 85 f6             	test   %rsi,%rsi
  13:	0f 84 a4 01 00 00    	je     0x1bd
  19:	41 57                	push   %r15
  1b:	41 56                	push   %r14
  1d:	53                   	push   %rbx
  1e:	49 89 f8             	mov    %rdi,%r8
  21:	49 01 f0             	add    %rsi,%r8
  24:	0f 82 57 02 00 00    	jb     0x281
* 2a:	49 89 f8             	mov    %rdi,%r8 <-- trapping instruction
  2d:	49 c1 e8 2f          	shr    $0x2f,%r8
  31:	41 81 f8 ff ff 01 00 	cmp    $0x1ffff,%r8d
  38:	0f 82 43 02 00 00    	jb     0x281
  3e:	49                   	rex.WB
  3f:	bf                   	.byte 0xbf