ODEBUG: free active (active state 0) object: ffff88806d5d7c90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x150 include/linux/skbuff.h:2927
WARNING: lib/debugobjects.c:612 at debug_print_object+0x18e/0x2a0 lib/debugobjects.c:612, CPU#0: udevd/5885
Modules linked in:
CPU: 0 UID: 0 PID: 5885 Comm: udevd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:debug_print_object+0x19b/0x2a0 lib/debugobjects.c:612
Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4f 48 8d 3d 72 12 df 0b 41 56 48 8b 14 dd e0 c7 f2 8b 4c 89 e6 <67> 48 0f b9 3a 58 83 05 bc 9b d5 0b 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0018:ffffc90000007a08 EFLAGS: 00010246

RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: ffffffff8bf2c720 RSI: ffffffff8bf2c300 RDI: ffffffff90929100
RBP: 0000000000000001 R08: ffff88806d5d7c90 R09: ffffffff8b906c80
R10: ffffffff9088e9d7 R11: ffff88807b7bc830 R12: ffffffff8bf2c300
R13: ffffffff8b906cc0 R14: ffffffff8a6210f0 R15: ffffc90000007b08
FS:  00007f49027a3880(0000) GS:ffff8881248f6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f490279f000 CR3: 0000000079575000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
 debug_check_no_obj_freed+0x4b7/0x600 lib/debugobjects.c:1129
 slab_free_hook mm/slub.c:2471 [inline]
 slab_free mm/slub.c:6670 [inline]
 kfree+0x2d1/0x6e0 mm/slub.c:6878
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x53f/0x630 net/rose/rose_timer.c:183
 call_timer_fn+0x19a/0x5a0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x74a/0xae0 kernel/time/timer.c:2373
 __run_timer_base kernel/time/timer.c:2385 [inline]
 __run_timer_base kernel/time/timer.c:2377 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2394
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2404
 handle_softirqs+0x219/0x950 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x109/0x170 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+0xa4/0xc0 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:mas_next_node+0x370/0xf50 lib/maple_tree.c:4311
Code: c9 48 c1 e8 03 48 89 4c 24 20 83 e0 0f 89 04 24 e8 a5 d4 50 f6 41 83 fe 01 0f 85 90 04 00 00 45 89 e5 e8 f3 d9 50 f6 4c 89 fa <48> b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 4c 89 fa 83
RSP: 0018:ffffc9000407f670 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffc9000407f728 RCX: ffffffff8b6e038d
RDX: ffffc9000407f775 RSI: ffffffff8b6dfc1d RDI: 0000000000000005
RBP: ffff88807d810600 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000001 R11: ffff88807b7bc830 R12: 0000000000000003
R13: 0000000000000003 R14: 0000000000000001 R15: ffffc9000407f775
 mt_validate_nulls+0x729/0x9d0 lib/maple_tree.c:7132
 mt_validate+0x2f80/0x3f90 lib/maple_tree.c:7179
 validate_mm+0xa9/0x560 mm/vma.c:644
 vms_complete_munmap_vmas+0x602/0x970 mm/vma.c:1299
 do_vmi_align_munmap+0x446/0x7e0 mm/vma.c:1539
 do_vmi_munmap+0x204/0x3e0 mm/vma.c:1587
 __vm_munmap+0x196/0x380 mm/vma.c:3203
 __do_sys_munmap mm/mmap.c:1077 [inline]
 __se_sys_munmap mm/mmap.c:1074 [inline]
 __x64_sys_munmap+0x59/0x80 mm/mmap.c:1074
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f490211e097
Code: 73 01 c3 48 8b 0d 61 2d 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 31 2d 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd4a2f80e8 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 00005557308842d0 RCX: 00007f490211e097
RDX: 0000555730884318 RSI: 0000000000000200 RDI: 00007f4902790000
RBP: 0000000000000011 R08: 0000555730889950 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000246 R12: 00005557308b16a0
R13: 00007f49028ca39c R14: 0000000000002200 R15: 0000000000000009
 </TASK>
----------------
Code disassembly (best guess):
   0:	b8 00 00 00 00       	mov    $0x0,%eax
   5:	00 fc                	add    %bh,%ah
   7:	ff                   	(bad)
   8:	df 48 89             	fisttps -0x77(%rax)
   b:	fa                   	cli
   c:	48 c1 ea 03          	shr    $0x3,%rdx
  10:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  14:	75 4f                	jne    0x65
  16:	48 8d 3d 72 12 df 0b 	lea    0xbdf1272(%rip),%rdi        # 0xbdf128f
  1d:	41 56                	push   %r14
  1f:	48 8b 14 dd e0 c7 f2 	mov    -0x740d3820(,%rbx,8),%rdx
  26:	8b
  27:	4c 89 e6             	mov    %r12,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	58                   	pop    %rax
  30:	83 05 bc 9b d5 0b 01 	addl   $0x1,0xbd59bbc(%rip)        # 0xbd59bf3
  37:	48 83 c4 18          	add    $0x18,%rsp
  3b:	5b                   	pop    %rbx
  3c:	5d                   	pop    %rbp
  3d:	41 5c                	pop    %r12
  3f:	41                   	rex.B