dm9601 2-1:0.0 eth1: register 'dm9601' at usb-dummy_hcd.1-1, Davicom DM96xx USB 10/100 Ethernet, 06:da:ea:5f:bf:b5 usb 2-1: USB disconnect, device number 10 dm9601 2-1:0.0 eth1: unregister 'dm9601' usb-dummy_hcd.1-1, Davicom DM96xx USB 10/100 Ethernet ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1573 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 84ff37ac object type: work_struct hint: usbnet_deferred_kevent+0x0/0x388 drivers/net/usb/usbnet.c:630 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 1 PID: 1573 Comm: kworker/1:3 Not tainted 6.10.0-rc4-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818d4618>] (dump_backtrace) from [<818d4714>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622d44 r5:00000000 r4:81fe136c [<818d46fc>] (show_stack) from [<818f1d44>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818d46fc>] (show_stack) from [<818f1d44>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818f1cf0>] (dump_stack_lvl) from [<818f1d84>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285fd18 [<818f1d6c>] (dump_stack) from [<818d51bc>] (panic+0x120/0x358 kernel/panic.c:347) [<818d509c>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818d509c>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fc9fdc r0:81fd1c2c r7:808273b4 [<80243d58>] (check_panic_on_warn) from [<80243fc0>] (__warn+0x7c/0x180 kernel/panic.c:693) [<80243f44>] (__warn) from [<802442ac>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:726) r8:00000009 r7:8202fc10 r6:eaf15a7c r5:83ed3000 r4:00000000 [<802440c8>] (warn_slowpath_fmt) from [<808273b4>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84ff3000 r8:81a02b44 r7:82058cac r6:828c3654 r5:eaf15b24 r4:8260cda8 [<808272f0>] (debug_print_object) from [<80828c54>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<808272f0>] (debug_print_object) from [<80828c54>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:84ff3800 r7:84ff37ac r6:00000100 r5:00000003 r4:00000000 [<80828a00>] (debug_check_no_obj_freed) from [<804baed4>] (slab_free_hook mm/slub.c:2163 [inline]) [<80828a00>] (debug_check_no_obj_freed) from [<804baed4>] (slab_free mm/slub.c:4437 [inline]) [<80828a00>] (debug_check_no_obj_freed) from [<804baed4>] (kfree+0x1a0/0x340 mm/slub.c:4558) r10:82777ef0 r9:854a3880 r8:84ff3000 r7:80461068 r6:82c023c0 r5:ddeacdc0 r4:84ff3000 [<804bad34>] (kfree) from [<80461068>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82777ef0 r9:854a3880 r8:84ff3000 r7:00000000 r6:855dc200 r5:8505c280 r4:84ff3000 [<8046103c>] (kvfree) from [<8140a26c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10903) r5:8505c280 r4:84ff3000 [<8140a250>] (netdev_freemem) from [<81445b9c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<81445b70>] (netdev_release) from [<80a60294>] (device_release+0x38/0xa8 drivers/base/core.c:2581) r5:8505c280 r4:84ff33b8 [<80a6025c>] (device_release) from [<818ae494>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a6025c>] (device_release) from [<818ae494>] (kobject_release lib/kobject.c:720 [inline]) [<80a6025c>] (device_release) from [<818ae494>] (kref_put include/linux/kref.h:65 [inline]) [<80a6025c>] (device_release) from [<818ae494>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b497f4 r4:84ff33b8 [<818ae3cc>] (kobject_put) from [<80a604c0>] (put_device+0x18/0x1c drivers/base/core.c:3787) r7:854a1400 r6:84ff310c r5:84ff3000 r4:00000000 [<80a604a8>] (put_device) from [<813fb400>] (free_netdev+0x10c/0x18c net/core/dev.c:11100) [<813fb2f4>] (free_netdev) from [<80d34150>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84ff3774 r5:84ff3660 r4:00000000 [<80d340a4>] (usbnet_disconnect) from [<80d93230>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:854a1430 r6:82777ef0 r5:00000000 r4:854a1400 [<80d931ac>] (usb_unbind_interface) from [<80a6839c>] (device_remove drivers/base/dd.c:568 [inline]) [<80d931ac>] (usb_unbind_interface) from [<80a6839c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:854a3880 r8:00000044 r7:854a1474 r6:82777ef0 r5:00000000 r4:854a1430 [<80a68338>] (device_remove) from [<80a698b4>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a68338>] (device_remove) from [<80a698b4>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:854a1430 [<80a69728>] (device_release_driver_internal) from [<80a69940>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:854a3880 r8:82f33440 r7:82f33438 r6:82f3340c r5:854a1430 r4:82f33430 [<80a69928>] (device_release_driver) from [<80a67a24>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a67958>] (bus_remove_device) from [<80a61b3c>] (device_del+0x148/0x38c drivers/base/core.c:3868) r9:854a3880 r8:83ed3000 r7:04208060 r6:00000000 r5:854a1430 r4:854a1474 [<80a619f4>] (device_del) from [<80d90c88>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:854a1400 r7:854a3800 r6:853cfbc8 r5:00000002 r4:00000070 [<80d90bac>] (usb_disable_device) from [<80d85ae8>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:8544ce00 r8:854a38c4 r7:8388ec00 r6:854a3880 r5:854a3800 r4:60000113 [<80d859fc>] (usb_disconnect) from [<80d88798>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d859fc>] (usb_disconnect) from [<80d88798>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d859fc>] (usb_disconnect) from [<80d88798>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d859fc>] (usb_disconnect) from [<80d88798>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83852d00 r7:854a3800 r6:8388e400 r5:8388ee10 r4:00000001 [<80d87920>] (hub_event) from [<802671bc>] (process_one_work+0x1c4/0x510 kernel/workqueue.c:3231) r10:82e61205 r9:83ed3000 r8:01800000 r7:ddde40c0 r6:82e61200 r5:83852d00 r4:83f02880 [<80266ff8>] (process_one_work) from [<80267df0>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80266ff8>] (process_one_work) from [<80267df0>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3393) r10:83ed3000 r9:83f028ac r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:83f02880 [<80267c04>] (worker_thread) from [<80271228>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df87de90 r8:83dd23c0 r7:83f02880 r6:80267c04 r5:83ed3000 r4:83f05400 [<80271124>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:134) Exception stack(0xeaf15fb0 to 0xeaf15ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80271124 r4:83f05400 Rebooting in 86400 seconds..