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ODEBUG: free active (active state 0) object: ffff888036577490 object type: timer_list hint: rose_t0timer_expiry+0x0/0x150 include/linux/skbuff.h:2942
WARNING: lib/debugobjects.c:629 at debug_print_object+0x18e/0x2a0 lib/debugobjects.c:629, CPU#0: syz.7.1415/12278
Modules linked in:
CPU: 0 UID: 0 PID: 12278 Comm: syz.7.1415 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:debug_print_object+0x19b/0x2a0 lib/debugobjects.c:629
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 62 f1 e6 0b 41 56 48 8b 14 dd c0 24 1c 8c 4c 89 e6 <67> 48 0f b9 3a 58 83 05 cc 81 dc 0b 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0018:ffffc90000007a28 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: ffffffff8c1c2400 RSI: ffffffff8c1c2020 RDI: ffffffff90e68f50
RBP: 0000000000000001 R08: ffff888036577490 R09: ffffffff8bb2c6e0
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c1c2020
R13: ffffffff8bb2c720 R14: ffffffff8a806670 R15: ffffc90000007b28
FS:  00007fb8f36af6c0(0000) GS:ffff8881242f0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000028000 CR3: 000000007c1a9000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 __debug_check_no_obj_freed lib/debugobjects.c:1116 [inline]
 debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1146
 slab_free_hook mm/slub.c:2620 [inline]
 slab_free mm/slub.c:6246 [inline]
 kfree+0x3d0/0x6c0 mm/slub.c:6561
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x53f/0x630 net/rose/rose_timer.c:183
 call_timer_fn+0x19a/0x640 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x75f/0xaf0 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1ea/0xa00 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1061
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:raw_spin_rq_unlock_irq kernel/sched/sched.h:1645 [inline]
RIP: 0010:__schedule+0x3299/0x6820 kernel/sched/core.c:7193
Code: e8 fe ff ff e8 b8 c6 dd f6 41 c7 86 e0 0d 00 00 00 00 00 00 e9 4d 12 00 00 49 8d 7e 48 e8 bf ea 01 00 e8 2a 25 7a f6 fb 31 ff <e9> 58 de ff ff 49 8d be 88 0e 00 00 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900040778d8 EFLAGS: 00000246
RAX: 0000000000007d67 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8df520cc RDI: 0000000000000000
RBP: ffffc90004077a38 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 000000cba1b3b000 R12: ffff888020300000
R13: 0000000000000001 R14: ffff8880b843b340 R15: ffff888020300000
 preempt_schedule_common+0x42/0xc0 kernel/sched/core.c:7369
 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
 smp_call_function_single_async+0xa7/0xd0 kernel/smp.c:750
 rdmsr_safe_on_cpu+0x115/0x220 arch/x86/lib/msr-smp.c:179
 msr_read+0x19d/0x250 arch/x86/kernel/msr.c:66
 vfs_read+0x1e4/0xb30 fs/read_write.c:572
 ksys_read+0x12a/0x250 fs/read_write.c:717
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb8f279c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb8f36af028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fb8f2a16180 RCX: 00007fb8f279c819
RDX: 0000000000018ff8 RSI: 0000200000019680 RDI: 0000000000000006
RBP: 00007fb8f2832c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb8f2a16218 R14: 00007fb8f2a16180 R15: 00007fffdb675588
 </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 62 f1 e6 0b 	lea    0xbe6f162(%rip),%rdi        # 0xbe6f17f
  1d:	41 56                	push   %r14
  1f:	48 8b 14 dd c0 24 1c 	mov    -0x73e3db40(,%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 cc 81 dc 0b 01 	addl   $0x1,0xbdc81cc(%rip)        # 0xbdc8203
  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