------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff888071d9b890 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 1 PID: 13882 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 1 UID: 0 PID: 13882 Comm: syz.4.2060 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 2c ea 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000a08a00 EFLAGS: 00010296
RAX: 5c62f8c0c76fd200 RBX: dffffc0000000000 RCX: ffff8880698edac0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffffffff8f7cd177 R09: 1ffffffff1ef9a2e
R10: dffffc0000000000 R11: fffffbfff1ef9a2f R12: ffffffff8a391560
R13: ffffffff8bbf1100 R14: ffff888071d9b890 R15: ffffffff8b6cf600
FS:  00007f6de1e5a6c0(0000) GS:ffff88812623e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f70af420440 CR3: 000000002435e000 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:console_flush_all+0x7f4/0xb10 arch/x86/include/asm/irqflags.h:-1
Code: ff ff e8 6f b2 1f 00 90 0f 0b 90 e9 62 fc ff ff e8 61 b2 1f 00 e8 fc ef a5 09 48 85 db 74 c0 e8 52 b2 1f 00 fb 48 8b 5c 24 18 <48> 8b 44 24 20 42 80 3c 20 00 74 08 48 89 df e8 58 67 85 00 48 8b
RSP: 0018:ffffc90005777500 EFLAGS: 00000287
RAX: ffffffff81a0521e RBX: ffffffff8e7679b8 RCX: 0000000000080000
RDX: ffffc9000cfcc000 RSI: 00000000000028e6 RDI: 00000000000028e7
RBP: ffffc90005777650 R08: ffffffff8f7cd177 R09: 1ffffffff1ef9a2e
R10: dffffc0000000000 R11: fffffbfff1ef9a2f R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffff8e767960
 __console_flush_and_unlock kernel/printk/printk.c:3258 [inline]
 console_unlock+0xbb/0x190 kernel/printk/printk.c:3298
 vprintk_emit+0x4c5/0x590 kernel/printk/printk.c:2423
 _printk+0xcf/0x120 kernel/printk/printk.c:2448
 netdev_info+0x10a/0x160 net/core/dev.c:12909
 __dev_set_promiscuity+0x307/0x740 net/core/dev.c:9499
 __dev_change_flags+0x41b/0x6d0 net/core/dev.c:9696
 netif_change_flags+0x88/0x1a0 net/core/dev.c:9750
 dev_change_flags+0x130/0x260 net/core/dev_api.c:68
 dev_ioctl+0x7b4/0x1150 net/core/dev_ioctl.c:838
 sock_do_ioctl+0x22c/0x300 net/socket.c:1268
 sock_ioctl+0x576/0x790 net/socket.c:1375
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 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: 0033:0x7f6de0f8efc9
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:00007f6de1e5a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6de11e5fa0 RCX: 00007f6de0f8efc9
RDX: 0000200000002280 RSI: 0000000000008914 RDI: 0000000000000006
RBP: 00007f6de1011f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6de11e6038 R14: 00007f6de11e5fa0 R15: 00007ffe1b5ecdd8
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	e8 6f b2 1f 00       	call   0x1fb274
   5:	90                   	nop
   6:	0f 0b                	ud2
   8:	90                   	nop
   9:	e9 62 fc ff ff       	jmp    0xfffffc70
   e:	e8 61 b2 1f 00       	call   0x1fb274
  13:	e8 fc ef a5 09       	call   0x9a5f014
  18:	48 85 db             	test   %rbx,%rbx
  1b:	74 c0                	je     0xffffffdd
  1d:	e8 52 b2 1f 00       	call   0x1fb274
  22:	fb                   	sti
  23:	48 8b 5c 24 18       	mov    0x18(%rsp),%rbx
* 28:	48 8b 44 24 20       	mov    0x20(%rsp),%rax <-- trapping instruction
  2d:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  32:	74 08                	je     0x3c
  34:	48 89 df             	mov    %rbx,%rdi
  37:	e8 58 67 85 00       	call   0x856794
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b