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ODEBUG: free active (active state 0) object: ffff888058209c90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 1 PID: 20021 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 1 UID: 0 PID: 20021 Comm: syz.2.4232 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 97 e8 52 fd 4d 8b 0f 48 c7 c7 20 40 e3 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 2a 1e b3 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 67 8a d3 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0000:ffffc90000a08a10 EFLAGS: 00010292
RAX: 63e9acf6823eb800 RBX: dffffc0000000000 RCX: ffff88804479da00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1ec R12: ffffffff8a6c9770
R13: ffffffff8be341a0 R14: ffff888058209c90 R15: ffffffff8b8cdfa0
FS:  00007fa8cb3516c0(0000) GS:ffff888125d1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa8cb350f98 CR3: 000000007d64c000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
 debug_check_no_obj_freed+0x3a2/0x470 lib/debugobjects.c:1129
 slab_free_hook mm/slub.c:2348 [inline]
 slab_free mm/slub.c:4680 [inline]
 kfree+0x112/0x440 mm/slub.c:4879
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x4cb/0x600 net/rose/rose_timer.c:183
 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers kernel/time/timer.c:2372 [inline]
 __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384
 run_timer_base kernel/time/timer.c:2393 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:check_kcov_mode kernel/kcov.c:194 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:246 [inline]
RIP: 0010:__sanitizer_cov_trace_cmp8+0x37/0x90 kernel/kcov.c:294
Code: 08 50 a0 92 65 8b 15 88 a2 e0 10 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 57 83 b9 3c 16 00 00 00 74 4e 8b 91 18 16 00 00 <83> fa 03 75 43 48 8b 91 20 16 00 00 44 8b 89 1c 16 00 00 49 c1 e1
RSP: 0000:ffffc90016237c38 EFLAGS: 00000246
RAX: ffffffff8b716ccc RBX: 0000000000000003 RCX: ffff88804479da00
RDX: 0000000000000000 RSI: ffff88801a474b00 RDI: ffff888032434e00
RBP: dffffc0000000000 R08: ffff88804479da00 R09: 0000000000000004
R10: 0000000000000003 R11: 0000000000000000 R12: 00007fa8cb332000
R13: ffffffffffffffff R14: ffff88801a474b00 R15: ffff888032434e00
 ma_dead_node lib/maple_tree.c:576 [inline]
 mtree_range_walk+0x57c/0x840 lib/maple_tree.c:2798
 mas_state_walk lib/maple_tree.c:3636 [inline]
 mas_walk+0xc6/0x2e0 lib/maple_tree.c:4939
 lock_vma_under_rcu+0x18f/0x3d0 mm/mmap_lock.c:143
 do_user_addr_fault+0x2d9/0x1390 arch/x86/mm/fault.c:1327
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa8ca44e1ee
Code: f6 31 c0 e8 b4 f2 13 00 48 81 c4 90 00 00 00 48 98 5b c3 66 0f 1f 84 00 00 00 00 00 41 54 55 53 48 89 fb 48 81 ec d0 00 00 00 <48> 89 74 24 28 48 89 54 24 30 48 89 4c 24 38 4c 89 44 24 40 4c 89
RSP: 002b:00007fa8cb350f70 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 00007fa8ca613167 RCX: 00007fa8ca60fdd8
RDX: 00000000000130a6 RSI: 0000000000000001 RDI: 00007fa8ca613167
RBP: 00007fa8ca7b6090 R08: 0000000007bfa0b3 R09: 7fffffffffffffff
R10: 3fffffffffffffff R11: 0000000000000246 R12: 0000000000000001
R13: 00007fa8ca7b6128 R14: 00007fa8ca7b6090 R15: 00007ffe45e651e8
 </TASK>
----------------
Code disassembly (best guess):
   0:	08 50 a0             	or     %dl,-0x60(%rax)
   3:	92                   	xchg   %eax,%edx
   4:	65 8b 15 88 a2 e0 10 	mov    %gs:0x10e0a288(%rip),%edx        # 0x10e0a293
   b:	81 e2 00 01 ff 00    	and    $0xff0100,%edx
  11:	74 11                	je     0x24
  13:	81 fa 00 01 00 00    	cmp    $0x100,%edx
  19:	75 57                	jne    0x72
  1b:	83 b9 3c 16 00 00 00 	cmpl   $0x0,0x163c(%rcx)
  22:	74 4e                	je     0x72
  24:	8b 91 18 16 00 00    	mov    0x1618(%rcx),%edx
* 2a:	83 fa 03             	cmp    $0x3,%edx <-- trapping instruction
  2d:	75 43                	jne    0x72
  2f:	48 8b 91 20 16 00 00 	mov    0x1620(%rcx),%rdx
  36:	44 8b 89 1c 16 00 00 	mov    0x161c(%rcx),%r9d
  3d:	49                   	rex.WB
  3e:	c1                   	.byte 0xc1
  3f:	e1                   	.byte 0xe1