------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff88811e1f9200 object type: work_struct hint: usbnet_deferred_kevent+0x0/0xeb0 drivers/net/usb/usbnet.c:1510 WARNING: CPU: 1 PID: 24256 at lib/debugobjects.c:612 debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612 Modules linked in: CPU: 1 UID: 0 PID: 24256 Comm: kworker/1:7 Not tainted 6.16.0-syzkaller-11568-gd632ab86aff2 #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: usb_hub_wq hub_event 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 40 65 69 87 4c 89 e6 48 c7 c7 c0 59 69 87 e8 df c7 b2 fe 90 <0f> 0b 90 90 58 83 05 16 d6 ee 07 01 48 83 c4 18 5b 5d 41 5c 41 5d RSP: 0018:ffffc900143cf418 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffc90010cdb000 RDX: 0000000000100000 RSI: ffffffff8140b975 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff87696060 R13: ffffffff87476e40 R14: ffffffff8497c5d0 R15: ffffc900143cf518 FS: 0000000000000000(0000) GS:ffff88826921d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f16d33ab03c CR3: 0000000117194000 CR4: 00000000003506f0 Call Trace: __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:2348 [inline] slab_free mm/slub.c:4680 [inline] kfree+0x2d4/0x470 mm/slub.c:4879 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+0x1e7/0x5a0 lib/kobject.c:737 put_device+0x1f/0x30 drivers/base/core.c:3797 free_netdev+0x61c/0x910 net/core/dev.c:11992 usbnet_disconnect+0x25c/0x500 drivers/net/usb/usbnet.c:1673 usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:571 [inline] device_remove+0x125/0x170 drivers/base/dd.c:563 __device_release_driver drivers/base/dd.c:1274 [inline] device_release_driver_internal+0x44b/0x620 drivers/base/dd.c:1297 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579 device_del+0x396/0x9f0 drivers/base/core.c:3878 usb_disable_device+0x355/0x7d0 drivers/usb/core/message.c:1418 usb_disconnect+0x2e1/0x9c0 drivers/usb/core/hub.c:2344 hub_port_connect drivers/usb/core/hub.c:5406 [inline] hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] port_event drivers/usb/core/hub.c:5870 [inline] hub_event+0x1aa2/0x5060 drivers/usb/core/hub.c:5952 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400 kthread+0x3c5/0x780 kernel/kthread.c:463 ret_from_fork+0x5b6/0x6c0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245