------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff888029f03c90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x150 include/linux/skbuff.h:2927
WARNING: CPU: 0 PID: 17614 at lib/debugobjects.c:612 debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 17614 Comm: syz.8.3104 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+0x1a2/0x2b0 lib/debugobjects.c:612
Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 54 41 56 48 8b 14 dd a0 f3 f1 8b 4c 89 e6 48 c7 c7 20 e8 f1 8b e8 8f e1 c7 fc 90 <0f> 0b 90 90 58 83 05 96 d2 cf 0b 01 48 83 c4 18 5b 5d 41 5c 41 5d
RSP: 0018:ffffc90000007a18 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff817b6ee8
RDX: ffff88805d68a480 RSI: ffffffff817b6ef5 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff8bf1eec0
R13: ffffffff8b901fe0 R14: ffffffff8a533b90 R15: ffffc90000007b18
FS:  00007f80d0e946c0(0000) GS:ffff8881249d9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7eef809d74 CR3: 000000007c9ca000 CR4: 00000000003526f0
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:2454 [inline]
 slab_free mm/slub.c:6611 [inline]
 kfree+0x291/0x6d0 mm/slub.c:6818
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x53f/0x630 net/rose/rose_timer.c:183
 call_timer_fn+0x19a/0x620 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers+0x6ef/0x960 kernel/time/timer.c:2372
 __run_timer_base kernel/time/timer.c:2384 [inline]
 __run_timer_base kernel/time/timer.c:2376 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2393
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2403
 handle_softirqs+0x219/0x8e0 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:1052 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 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:__sanitizer_cov_trace_pc+0x56/0x70 kernel/kcov.c:222
Code: 00 f0 00 75 35 8b 82 7c 16 00 00 85 c0 74 2b 8b 82 58 16 00 00 83 f8 02 75 20 48 8b 8a 60 16 00 00 8b 92 5c 16 00 00 48 8b 01 <48> 83 c0 01 48 39 d0 73 07 48 89 01 48 89 34 c1 e9 85 de ab 09 0f
RSP: 0018:ffffc900129ffa30 EFLAGS: 00000246
RAX: 000000000007ffff RBX: 0000000000000001 RCX: ffffc9000d27b000
RDX: 0000000000080000 RSI: ffffffff84aabb1c RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000008 R14: ffffc900129ffb80 R15: ffffc900129ffd98
 get_current arch/x86/include/asm/current.h:25 [inline]
 in_x32_syscall arch/x86/include/asm/compat.h:86 [inline]
 in_32bit_syscall arch/x86/include/asm/compat.h:94 [inline]
 in_compat_syscall arch/x86/include/asm/compat.h:100 [inline]
 import_iovec+0x7c/0x140 lib/iov_iter.c:1429
 copy_msghdr_from_user+0xf9/0x160 net/socket.c:2567
 recvmsg_copy_msghdr net/socket.c:2816 [inline]
 ___sys_recvmsg+0xdb/0x1a0 net/socket.c:2888
 do_recvmmsg+0x2fe/0x750 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+0x22a/0x280 net/socket.c:3077
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f80cff8eec9
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:00007f80d0e94038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f80d01e6090 RCX: 00007f80cff8eec9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 000000000000000a
RBP: 00007f80d0011f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f80d01e6128 R14: 00007f80d01e6090 R15: 00007ffda0157bb8
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 f0                	add    %dh,%al
   2:	00 75 35             	add    %dh,0x35(%rbp)
   5:	8b 82 7c 16 00 00    	mov    0x167c(%rdx),%eax
   b:	85 c0                	test   %eax,%eax
   d:	74 2b                	je     0x3a
   f:	8b 82 58 16 00 00    	mov    0x1658(%rdx),%eax
  15:	83 f8 02             	cmp    $0x2,%eax
  18:	75 20                	jne    0x3a
  1a:	48 8b 8a 60 16 00 00 	mov    0x1660(%rdx),%rcx
  21:	8b 92 5c 16 00 00    	mov    0x165c(%rdx),%edx
  27:	48 8b 01             	mov    (%rcx),%rax
* 2a:	48 83 c0 01          	add    $0x1,%rax <-- trapping instruction
  2e:	48 39 d0             	cmp    %rdx,%rax
  31:	73 07                	jae    0x3a
  33:	48 89 01             	mov    %rax,(%rcx)
  36:	48 89 34 c1          	mov    %rsi,(%rcx,%rax,8)
  3a:	e9 85 de ab 09       	jmp    0x9abdec4
  3f:	0f                   	.byte 0xf