------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff88802a8c0890 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: lib/debugobjects.c:615 at debug_print_object lib/debugobjects.c:612 [inline], CPU#1: syz.2.1956/19058
WARNING: lib/debugobjects.c:615 at __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline], CPU#1: syz.2.1956/19058
WARNING: lib/debugobjects.c:615 at debug_check_no_obj_freed+0x405/0x550 lib/debugobjects.c:1129, CPU#1: syz.2.1956/19058
Modules linked in:
CPU: 1 UID: 0 PID: 19058 Comm: syz.2.1956 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 lib/debugobjects.c:612 [inline]
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
RIP: 0010:debug_check_no_obj_freed+0x44a/0x550 lib/debugobjects.c:1129
Code: 89 44 24 20 e8 e7 7d 8e fd 48 8b 44 24 20 4c 8b 4d 00 4c 89 ef 48 c7 c6 20 7c e0 8b 48 c7 c2 40 81 e0 8b 8b 0c 24 4d 89 f8 50 <67> 48 0f b9 3a 48 83 c4 08 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc
RSP: 0018:ffffc90000a08a70 EFLAGS: 00010246
RAX: ffffffff8a4dbe50 RBX: ffffffff99d4c3c8 RCX: 0000000000000000
RDX: ffffffff8be08140 RSI: ffffffff8be07c20 RDI: ffffffff8fac7230
RBP: ffffffff8b8d2580 R08: ffff88802a8c0890 R09: ffffffff8b8d36e0
R10: dffffc0000000000 R11: ffffffff81aeb660 R12: ffff88802a8c0a00
R13: ffffffff8fac7230 R14: ffff88802a8c0000 R15: ffff88802a8c0890
FS:  00007ff5e08266c0(0000) GS:ffff888125d2d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3d65ab CR3: 000000004e1b4000 CR4: 00000000003526f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 slab_free_hook mm/slub.c:2471 [inline]
 slab_free mm/slub.c:6674 [inline]
 kfree+0x13b/0x660 mm/slub.c:6882
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x4cb/0x600 net/rose/rose_timer.c:183
 call_timer_fn+0x16e/0x590 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers kernel/time/timer.c:2373 [inline]
 __run_timer_base+0x61a/0x860 kernel/time/timer.c:2385
 run_timer_base kernel/time/timer.c:2394 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2404
 handle_softirqs+0x27d/0x850 kernel/softirq.c:626
 __do_softirq kernel/softirq.c:660 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:727
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:743
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 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:finish_task_switch+0x242/0x940 kernel/sched/core.c:5116
Code: 0f 84 c2 01 00 00 48 85 db 0f 85 e9 01 00 00 e9 6b 05 00 00 4c 8b 75 d0 4c 89 e7 e8 c8 8c cd 09 e8 53 8e 37 00 fb 4c 8b 65 c0 <49> 8d bc 24 48 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc9000b6a71f8 EFLAGS: 00000282
RAX: 58607ed09055ba00 RBX: 0000000000000000 RCX: 58607ed09055ba00
RDX: 0000000000000000 RSI: ffffffff8d99597b RDI: ffffffff8be075e0
RBP: ffffc9000b6a7250 R08: ffffffff8fa20e77 R09: 1ffffffff1f441ce
R10: dffffc0000000000 R11: fffffbfff1f441cf R12: ffff888056c39e80
R13: dffffc0000000000 R14: ffff88801d6ddb80 R15: ffff8880b873b6d8
 context_switch kernel/sched/core.c:5261 [inline]
 __schedule+0x1516/0x5070 kernel/sched/core.c:6866
 __schedule_loop kernel/sched/core.c:6948 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6963
 schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75
 unix_wait_for_peer+0x1e9/0x2e0 net/unix/af_unix.c:1618
 unix_dgram_sendmsg+0xb6d/0x1840 net/unix/af_unix.c:2250
 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:737
 __sock_sendmsg net/socket.c:752 [inline]
 ____sys_sendmsg+0x577/0x880 net/socket.c:2610
 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2664
 __sys_sendmmsg+0x227/0x430 net/socket.c:2753
 __do_sys_sendmmsg net/socket.c:2780 [inline]
 __se_sys_sendmmsg net/socket.c:2777 [inline]
 __x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2777
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff5df98f749
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:00007ff5e0826038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007ff5dfbe5fa0 RCX: 00007ff5df98f749
RDX: 0000000000000651 RSI: 0000200000000000 RDI: 0000000000000007
RBP: 00007ff5dfa13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff5dfbe6038 R14: 00007ff5dfbe5fa0 R15: 00007ffd26bb5808
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 44 24 20          	mov    %eax,0x20(%rsp)
   4:	e8 e7 7d 8e fd       	call   0xfd8e7df0
   9:	48 8b 44 24 20       	mov    0x20(%rsp),%rax
   e:	4c 8b 4d 00          	mov    0x0(%rbp),%r9
  12:	4c 89 ef             	mov    %r13,%rdi
  15:	48 c7 c6 20 7c e0 8b 	mov    $0xffffffff8be07c20,%rsi
  1c:	48 c7 c2 40 81 e0 8b 	mov    $0xffffffff8be08140,%rdx
  23:	8b 0c 24             	mov    (%rsp),%ecx
  26:	4d 89 f8             	mov    %r15,%r8
  29:	50                   	push   %rax
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	48 83 c4 08          	add    $0x8,%rsp
  33:	4c 8b 6c 24 18       	mov    0x18(%rsp),%r13
  38:	48                   	rex.W
  39:	b9 00 00 00 00       	mov    $0x0,%ecx
  3e:	00 fc                	add    %bh,%ah