dm9601 1-1:0.0 eth1: unregister 'dm9601' usb-dummy_hcd.0-1, Davicom DM96xx USB 10/100 Ethernet ------------[ cut here ]------------ ODEBUG: free active (active state 0) object: 00000000f311a85e object type: work_struct hint: usbnet_deferred_kevent+0x0/0xa74 drivers/net/usb/usbnet.c:658 WARNING: CPU: 0 PID: 5163 at lib/debugobjects.c:514 debug_print_object+0x184/0x264 lib/debugobjects.c:514 Modules linked in: CPU: 0 PID: 5163 Comm: kworker/0:0 Not tainted 6.9.0-syzkaller-08284-gea5f6ad9ad96 #0 Hardware name: linux,dummy-virt (DT) Workqueue: usb_hub_wq hub_event pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object+0x184/0x264 lib/debugobjects.c:514 lr : debug_print_object+0x184/0x264 lib/debugobjects.c:514 sp : ffff800089ed7090 x29: ffff800089ed7090 x28: dfff800000000000 x27: 0000000000000004 x26: ffff8000801ccddc x25: ffff800089ed7218 x24: ffff80008525a960 x23: 0000000000000003 x22: ffff80008681fc78 x21: ffff800084f95d00 x20: ffff80008525a160 x19: ffff800089ed7200 x18: ffff000013a2a880 x17: 626f206535386131 x16: 0000000000000006 x15: 1fffe0000274550f x14: 1fffe0000274552d x13: 1fffe0000274550c x12: ffff60000d4cba03 x11: 1fffe0000d4cba02 x10: ffff60000d4cba02 x9 : dfff800000000000 x8 : ffff00006a65d013 x7 : 0000000000000001 x6 : ffff60000d4cba02 x5 : ffff00006a65d010 x4 : 1fffe000027453c1 x3 : dfff800000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000013a29e00 Call trace: debug_print_object+0x184/0x264 lib/debugobjects.c:514 __debug_check_no_obj_freed lib/debugobjects.c:989 [inline] debug_check_no_obj_freed+0x3b8/0x4f4 lib/debugobjects.c:1019 slab_free_hook mm/slub.c:2088 [inline] slab_free mm/slub.c:4353 [inline] kfree+0x1b8/0x380 mm/slub.c:4463 kvfree+0x3c/0x4c mm/util.c:680 netdev_freemem+0x48/0x60 net/core/dev.c:10902 netdev_release+0x70/0x98 net/core/net-sysfs.c:2031 device_release+0xe4/0x1e8 drivers/base/core.c:2580 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x17c/0x444 lib/kobject.c:737 put_device+0x14/0x24 drivers/base/core.c:3828 free_netdev+0x2c0/0x474 net/core/dev.c:11099 usbnet_disconnect+0x194/0x38c drivers/net/usb/usbnet.c:1636 usb_unbind_interface+0x168/0x6f4 drivers/usb/core/driver.c:461 device_remove drivers/base/dd.c:568 [inline] device_remove+0x100/0x14c drivers/base/dd.c:560 __device_release_driver drivers/base/dd.c:1270 [inline] device_release_driver_internal+0x310/0x47c drivers/base/dd.c:1293 device_release_driver+0x18/0x24 drivers/base/dd.c:1316 bus_remove_device+0x1a4/0x348 drivers/base/bus.c:574 device_del+0x2e8/0x7d0 drivers/base/core.c:3909 usb_disable_device+0x240/0x5ac drivers/usb/core/message.c:1418 usb_disconnect+0x22c/0x75c drivers/usb/core/hub.c:2305 hub_port_connect drivers/usb/core/hub.c:5362 [inline] hub_port_connect_change drivers/usb/core/hub.c:5662 [inline] port_event drivers/usb/core/hub.c:5822 [inline] hub_event+0x10a8/0x365c drivers/usb/core/hub.c:5904 process_one_work+0x7bc/0x18a4 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x764/0xc24 kernel/workqueue.c:3393 kthread+0x27c/0x300 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 irq event stamp: 59022 hardirqs last enabled at (59021): [] __up_console_sem kernel/printk/printk.c:341 [inline] hardirqs last enabled at (59021): [] __console_unlock kernel/printk/printk.c:2731 [inline] hardirqs last enabled at (59021): [] console_unlock+0x1c0/0x1d8 kernel/printk/printk.c:3050 hardirqs last disabled at (59022): [] el1_dbg+0x24/0x9c arch/arm64/kernel/entry-common.c:470 softirqs last enabled at (58960): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (58960): [] handle_softirqs+0x8a8/0xd80 kernel/softirq.c:582 softirqs last disabled at (58939): [] __do_softirq+0x14/0x20 kernel/softirq.c:588 ---[ end trace 0000000000000000 ]---