------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff888140423810 object type: timer_list hint: rtl_ips_nic_off_wq_callback+0x0/0x680 include/linux/etherdevice.h:384
WARNING: lib/debugobjects.c:629 at debug_print_object+0x18e/0x2a0 lib/debugobjects.c:629, CPU#1: kworker/1:5/5295
Modules linked in:
CPU: 1 UID: 0 PID: 5295 Comm: kworker/1:5 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: usb_hub_wq hub_event
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 82 e3 22 08 41 56 48 8b 14 dd 60 d8 af 87 4c 89 e6 <67> 48 0f b9 3a 58 83 05 0c 7d 1e 08 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0018:ffffc900038af438 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: ffffffff87afd7a0 RSI: ffffffff87afd3c0 RDI: ffffffff8af472f0
RBP: 0000000000000001 R08: ffff888140423810 R09: ffffffff878d0200
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff87afd3c0
R13: ffffffff878d0240 R14: ffffffff848df2a0 R15: ffffc900038af538
FS: 0000000000000000(0000) GS:ffff8882687ce000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557b8eb02300 CR3: 000000013cbbe000 CR4: 00000000003506f0
Call Trace:
<TASK>
__debug_check_no_obj_freed lib/debugobjects.c:1116 [inline]
debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1146
__free_pages_prepare mm/page_alloc.c:1440 [inline]
__free_pages_ok+0x3cf/0xea0 mm/page_alloc.c:1614
device_release+0xa4/0x240 drivers/base/core.c:2565
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1f7/0x640 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3797
rtl_usb_disconnect+0x2b3/0x3b0 drivers/net/wireless/realtek/rtlwifi/usb.c:1077
usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:573 [inline]
device_remove+0x12a/0x180 drivers/base/dd.c:565
__device_release_driver drivers/base/dd.c:1284 [inline]
device_release_driver_internal+0x42e/0x600 drivers/base/dd.c:1307
bus_remove_device+0x22f/0x440 drivers/base/bus.c:616
device_del+0x376/0x9b0 drivers/base/core.c:3878
usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1478
usb_disconnect+0x2e2/0x9a0 drivers/usb/core/hub.c:2345
hub_port_connect drivers/usb/core/hub.c:5407 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
port_event drivers/usb/core/hub.c:5871 [inline]
hub_event+0x1d0c/0x4af0 drivers/usb/core/hub.c:5953
process_one_work+0xa23/0x19a0 kernel/workqueue.c:3276
process_scheduled_works kernel/workqueue.c:3359 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3440
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x6c3/0xcb0 arch/x86/kernel/process.c:158
----------------
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 82 e3 22 08 lea 0x822e382(%rip),%rdi # 0x822e39f
1d: 41 56 push %r14
1f: 48 8b 14 dd 60 d8 af mov -0x785027a0(,%rbx,8),%rdx
26: 87
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 0c 7d 1e 08 01 addl $0x1,0x81e7d0c(%rip) # 0x81e7d43
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