------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff888043095c90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 0 PID: 16143 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 16143 Comm: syz.6.2097 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 77 e4 92 fd 4d 8b 0f 48 c7 c7 80 0f bf 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 4a 4b f0 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 57 32 ea 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000007a00 EFLAGS: 00010296
RAX: 473787841a9f8800 RBX: dffffc0000000000 RCX: ffff88802ebc5ac0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba650 R12: ffffffff8a392640
R13: ffffffff8bbf1100 R14: ffff888043095c90 R15: ffffffff8b6cf600
FS:  00007f12b97d56c0(0000) GS:ffff88812613d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000c7030 CR3: 0000000047ba2000 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:2470 [inline]
 slab_free mm/slub.c:6630 [inline]
 kfree+0x115/0x6d0 mm/slub.c:6837
 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+0x286/0x870 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__mutex_lock+0xda4/0x1350 kernel/locking/mutex.c:760
Code: c6 44 28 13 00 65 48 8b 05 a9 66 26 07 48 3b 84 24 60 01 00 00 0f 85 e2 03 00 00 89 d8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> e9 06 6b 01 00 cc 4d 85 e4 74 7e 48 8b 44 24 20 42 80 3c 28 00
RSP: 0018:ffffc9000af276d0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc9000af27810 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8bbf05c0 RDI: 00000000ffffffff
RBP: ffffc9000af276d0 R08: ffffffff8f7cd777 R09: 1ffffffff1ef9aee
R10: dffffc0000000000 R11: fffffbfff1ef9aef R12: ffff888030b18000
R13: ffffc9000af27800 R14: ffff888030b180e8 R15: ffffc9000af277c0
 __unix_dgram_recvmsg+0x1e1/0xd60 net/unix/af_unix.c:2587
 sock_recvmsg_nosec+0x186/0x1c0 net/socket.c:1078
 ____sys_recvmsg+0x3aa/0x460 net/socket.c:2848
 ___sys_recvmsg+0x1b5/0x510 net/socket.c:2892
 do_recvmmsg+0x307/0x770 net/socket.c:2987
 __sys_recvmmsg net/socket.c:3061 [inline]
 __do_sys_recvmmsg net/socket.c:3084 [inline]
 __se_sys_recvmmsg net/socket.c:3077 [inline]
 __x64_sys_recvmmsg+0x190/0x240 net/socket.c:3077
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12bb58f6c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f12b97d5038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f12bb7e6180 RCX: 00007f12bb58f6c9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000006
RBP: 00007f12bb611f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12bb7e6218 R14: 00007f12bb7e6180 R15: 00007ffdf1c01548
 </TASK>
----------------
Code disassembly (best guess):
   0:	c6 44 28 13 00       	movb   $0x0,0x13(%rax,%rbp,1)
   5:	65 48 8b 05 a9 66 26 	mov    %gs:0x72666a9(%rip),%rax        # 0x72666b6
   c:	07
   d:	48 3b 84 24 60 01 00 	cmp    0x160(%rsp),%rax
  14:	00
  15:	0f 85 e2 03 00 00    	jne    0x3fd
  1b:	89 d8                	mov    %ebx,%eax
  1d:	48 8d 65 d8          	lea    -0x28(%rbp),%rsp
  21:	5b                   	pop    %rbx
  22:	41 5c                	pop    %r12
  24:	41 5d                	pop    %r13
  26:	41 5e                	pop    %r14
  28:	41 5f                	pop    %r15
* 2a:	5d                   	pop    %rbp <-- trapping instruction
  2b:	e9 06 6b 01 00       	jmp    0x16b36
  30:	cc                   	int3
  31:	4d 85 e4             	test   %r12,%r12
  34:	74 7e                	je     0xb4
  36:	48 8b 44 24 20       	mov    0x20(%rsp),%rax
  3b:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)