------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff88802b709c90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x560 net/rose/rose_link.c:-1
WARNING: lib/debugobjects.c:615 at debug_print_object lib/debugobjects.c:612 [inline], CPU#1: modprobe/12085
WARNING: lib/debugobjects.c:615 at __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline], CPU#1: modprobe/12085
WARNING: lib/debugobjects.c:615 at debug_check_no_obj_freed+0x405/0x550 lib/debugobjects.c:1129, CPU#1: modprobe/12085
Modules linked in:
CPU: 1 UID: 0 PID: 12085 Comm: modprobe Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:debug_print_object lib/debugobjects.c:612 [inline]
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
RIP: 0010:debug_check_no_obj_freed+0x44a/0x550 lib/debugobjects.c:1129
Code: 89 44 24 20 e8 b7 6b 7e fd 48 8b 44 24 20 4c 8b 4d 00 4c 89 ef 48 c7 c6 40 6b 27 8c 48 c7 c2 c0 70 27 8c 8b 0c 24 4d 89 f8 50 <67> 48 0f b9 3a 48 83 c4 08 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc
RSP: 0000:ffffc90000a08b68 EFLAGS: 00010246
RAX: ffffffff8a888d00 RBX: ffffffff9a4a1830 RCX: 0000000000000000
RDX: ffffffff8c2770c0 RSI: ffffffff8c276b40 RDI: ffffffff901b4570
RBP: ffffffff8bcf4a00 R08: ffff88802b709c90 R09: ffffffff8bcf5d20
R10: dffffc0000000000 R11: ffffffff81b099e0 R12: ffff88802b709e00
R13: ffffffff901b4570 R14: ffff88802b709000 R15: ffff88802b709c90
FS:  00007f8f48b62c80(0000) GS:ffff8881255b0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f48c1d000 CR3: 0000000060820000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 slab_free_hook mm/slub.c:2601 [inline]
 slab_free mm/slub.c:6082 [inline]
 kfree+0x13a/0x610 mm/slub.c:6399
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x4cb/0x600 net/rose/rose_timer.c:183
 call_timer_fn+0x192/0x5a0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers kernel/time/timer.c:2373 [inline]
 __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2385
 run_timer_base kernel/time/timer.c:2394 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2404
 handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:752
Code: 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 65 ff 05 c0 85 6d 11 e8 2b e2 f4 09 <89> c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0
RSP: 0000:ffffc9000b00f7e8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000080000002
RDX: 0000000000000000 RSI: ffffffff8c2764e0 RDI: ffffffff8c2764a0
RBP: ffffffff81fedbac R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000406 R11: 0000000000000000 R12: 0000000000000002
R13: ffffffff8e75e0a0 R14: 0000000000000000 R15: 0000000000000000
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0x5f/0x330 kernel/locking/lockdep.c:5831
 rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
 rcu_read_lock include/linux/rcupdate.h:850 [inline]
 page_ref_add_unless include/linux/page_ref.h:235 [inline]
 folio_ref_add_unless include/linux/page_ref.h:248 [inline]
 folio_try_get+0x38/0x340 include/linux/page_ref.h:264
 next_uptodate_folio+0xcb/0x5d0 mm/filemap.c:3709
 filemap_map_pages+0x14fc/0x2000 mm/filemap.c:3929
 do_fault_around mm/memory.c:5716 [inline]
 do_read_fault mm/memory.c:5749 [inline]
 do_fault mm/memory.c:5892 [inline]
 do_pte_missing+0x2036/0x37a0 mm/memory.c:4404
 handle_pte_fault mm/memory.c:6276 [inline]
 __handle_mm_fault mm/memory.c:6414 [inline]
 handle_mm_fault+0x1b8c/0x32a0 mm/memory.c:6583
 do_user_addr_fault+0xa73/0x1360 arch/x86/mm/fault.c:1334
 handle_page_fault arch/x86/mm/fault.c:1474 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f8f48c1d000
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <48> 83 ec 08 48 8b 05 dd cf 00 00 48 85 c0 74 02 ff d0 48 83 c4 08
RSP: 002b:00007ffcab602d98 EFLAGS: 00010206
RAX: 00007f8f48c1d000 RBX: 00007f8f48ecdb20 RCX: 00007ffcab602e40
RDX: 00007ffcab602e40 RSI: 00007ffcab602e18 RDI: 0000000000000004
RBP: 0000000000000004 R08: 00000000000001e0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcab602e18
R13: 00007ffcab602e40 R14: 00007f8f48f0d310 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 44 24 20          	mov    %eax,0x20(%rsp)
   4:	e8 b7 6b 7e fd       	call   0xfd7e6bc0
   9:	48 8b 44 24 20       	mov    0x20(%rsp),%rax
   e:	4c 8b 4d 00          	mov    0x0(%rbp),%r9
  12:	4c 89 ef             	mov    %r13,%rdi
  15:	48 c7 c6 40 6b 27 8c 	mov    $0xffffffff8c276b40,%rsi
  1c:	48 c7 c2 c0 70 27 8c 	mov    $0xffffffff8c2770c0,%rdx
  23:	8b 0c 24             	mov    (%rsp),%ecx
  26:	4d 89 f8             	mov    %r15,%r8
  29:	50                   	push   %rax
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	48 83 c4 08          	add    $0x8,%rsp
  33:	4c 8b 6c 24 18       	mov    0x18(%rsp),%r13
  38:	48                   	rex.W
  39:	b9 00 00 00 00       	mov    $0x0,%ecx
  3e:	00 fc                	add    %bh,%ah