------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff888057acb890 object type: timer_list hint: rose_t0timer_expiry+0x0/0x150 include/linux/skbuff.h:2928
WARNING: lib/debugobjects.c:612 at debug_print_object+0x18e/0x2a0 lib/debugobjects.c:612, CPU#1: syz-executor/5832
Modules linked in:
CPU: 1 UID: 0 PID: 5832 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
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 b2 46 f0 0b 41 56 48 8b 14 dd 60 e8 1a 8c 4c 89 e6 <67> 48 0f b9 3a 58 83 05 fc f0 e5 0b 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0018:ffffc90000a08a38 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: ffffffff8c1ae7a0 RSI: ffffffff8c1ae3c0 RDI: ffffffff90e38080
RBP: 0000000000000001 R08: ffff888057acb890 R09: ffffffff8bb2c880
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c1ae3c0
R13: ffffffff8bb2c8c0 R14: ffffffff8a6d6bd0 R15: ffffc90000a08b38
FS:  000055559058a500(0000) GS:ffff88812448b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fac1df456b8 CR3: 000000005d5e1000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
 debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1129
 slab_free_hook mm/slub.c:2601 [inline]
 slab_free mm/slub.c:6082 [inline]
 kfree+0x343/0x670 mm/slub.c:6399
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x53f/0x630 net/rose/rose_timer.c:183
 call_timer_fn+0x19a/0x590 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xac0 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/0x50 kernel/time/timer.c:2404
 handle_softirqs+0x1ea/0x910 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xef/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+0xa3/0xc0 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_find+0x2e0/0x740 lib/maple_tree.c:5626
Code: 03 48 b8 00 00 00 00 00 fc ff df 0f b6 04 02 84 c0 74 08 3c 03 0f 8e f0 02 00 00 c7 43 48 00 00 00 00 e8 13 42 8e f6 48 89 e8 <5b> 5d 41 5c 41 5d 41 5e e9 ae 90 97 f5 e8 fe 41 8e f6 48 8d 7b 10
RSP: 0018:ffffc9000406f930 EFLAGS: 00000293
RAX: ffff88805d5cb780 RBX: ffffc9000406fa28 RCX: dffffc0000000000
RDX: ffff88807e8f8000 RSI: ffffffff8b78b04d RDI: ffff88807e8f8000
RBP: ffff88805d5cb780 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffffffffffff
R13: ffffc9000406fa70 R14: ffff88805d5cb8c0 R15: dffffc0000000000
 vma_next include/linux/mm.h:1122 [inline]
 dup_mmap+0x527/0x1db0 mm/mmap.c:1749
 dup_mm kernel/fork.c:1530 [inline]
 copy_mm kernel/fork.c:1582 [inline]
 copy_process+0x7371/0x79b0 kernel/fork.c:2223
 kernel_clone+0xfc/0x930 kernel/fork.c:2654
 __do_sys_clone+0xd9/0x120 kernel/fork.c:2795
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fac1d1c4a12
Code: 89 e7 e8 f1 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffc017dc180 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffc017dc180 RCX: 00007fac1d1c4a12
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffc017dc30c R08: 0000000000000000 R09: 0000000000000001
R10: 000055559058a7d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 0000000000064fcf R15: 00007ffc017dc360
 </TASK>
----------------
Code disassembly (best guess):
   0:	b8 00 00 00 00       	mov    $0x0,%eax
   5:	00 fc                	add    %bh,%ah
   7:	ff                   	lcall  (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 b2 46 f0 0b 	lea    0xbf046b2(%rip),%rdi        # 0xbf046cf
  1d:	41 56                	push   %r14
  1f:	48 8b 14 dd 60 e8 1a 	mov    -0x73e517a0(,%rbx,8),%rdx
  26:	8c
  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 fc f0 e5 0b 01 	addl   $0x1,0xbe5f0fc(%rip)        # 0xbe5f133
  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