cdc_ncm 1-1:1.0 eth1: register 'cdc_ncm' at usb-dummy_hcd.0-1, CDC NCM (NO ZLP), 42:42:42:42:42:42 usb 1-1: USB disconnect, device number 9 cdc_ncm 1-1:1.0 eth1: unregister 'cdc_ncm' usb-dummy_hcd.0-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 50 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 8501dfcc object type: work_struct hint: usbnet_deferred_kevent+0x0/0x394 drivers/net/usb/usbnet.c:633 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 1 UID: 0 PID: 50 Comm: kworker/1:2 Not tainted 6.12.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<8199bf98>] (dump_backtrace) from [<8199c094>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622f44 r5:00000000 r4:8203daf4 [<8199c07c>] (show_stack) from [<819ba530>] (__dump_stack lib/dump_stack.c:94 [inline]) [<8199c07c>] (show_stack) from [<819ba530>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120) [<819ba4dc>] (dump_stack_lvl) from [<819ba570>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:82870d18 [<819ba558>] (dump_stack) from [<8199cbc0>] (panic+0x120/0x374 kernel/panic.c:354) [<8199caa0>] (panic) from [<802420d8>] (check_panic_on_warn kernel/panic.c:243 [inline]) [<8199caa0>] (panic) from [<802420d8>] (get_taint+0x0/0x1c kernel/panic.c:238) r3:8260c5c4 r2:00000001 r1:82025ec8 r0:8202d930 r7:808552e0 [<80242064>] (check_panic_on_warn) from [<8024223c>] (__warn+0x80/0x188 kernel/panic.c:748) [<802421bc>] (__warn) from [<8024252c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:783) r8:00000009 r7:8208cc28 r6:df92da8c r5:82f0b000 r4:00000000 [<80242348>] (warn_slowpath_fmt) from [<808552e0>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:8501d800 r8:81a01c24 r7:820b7a18 r6:828dd084 r5:df92db34 r4:8260cda4 [<8085521c>] (debug_print_object) from [<80856b70>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8085521c>] (debug_print_object) from [<80856b70>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:8501e000 r7:8501dfcc r6:00000100 r5:00000003 r4:00000000 [<8085691c>] (debug_check_no_obj_freed) from [<804c972c>] (slab_free_hook mm/slub.c:2273 [inline]) [<8085691c>] (debug_check_no_obj_freed) from [<804c972c>] (slab_free mm/slub.c:4579 [inline]) [<8085691c>] (debug_check_no_obj_freed) from [<804c972c>] (kfree+0x190/0x394 mm/slub.c:4727) r10:8277e5bc r9:8500dc80 r8:8501d800 r7:8046d4fc r6:82c023c0 r5:ddead360 r4:8501d800 [<804c959c>] (kfree) from [<8046d4fc>] (kvfree+0x2c/0x30 mm/util.c:701) r10:8277e5bc r9:8500dc80 r8:8501d800 r7:00000000 r6:8497ac80 r5:8489e280 r4:8501d800 [<8046d4d0>] (kvfree) from [<814fdffc>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2034) r5:8489e280 r4:8501d800 [<814fdfd0>] (netdev_release) from [<80aa494c>] (device_release+0x38/0xa8 drivers/base/core.c:2575) r5:8489e280 r4:8501dbc0 [<80aa4914>] (device_release) from [<81975dec>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80aa4914>] (device_release) from [<81975dec>] (kobject_release lib/kobject.c:720 [inline]) [<80aa4914>] (device_release) from [<81975dec>] (kref_put include/linux/kref.h:65 [inline]) [<80aa4914>] (device_release) from [<81975dec>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81b4c9c4 r4:8501dbc0 [<81975d4c>] (kobject_put) from [<80aa4b78>] (put_device+0x18/0x1c drivers/base/core.c:3783) r7:8500c400 r6:00000000 r5:8501d800 r4:00000000 [<80aa4b60>] (put_device) from [<814b2550>] (free_netdev+0x134/0x1ac net/core/dev.c:11259) [<814b241c>] (free_netdev) from [<80d8925c>] (usbnet_disconnect+0xb8/0xfc drivers/net/usb/usbnet.c:1652) r6:8501df94 r5:8501de80 r4:00000000 [<80d891a4>] (usbnet_disconnect) from [<80df1b40>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8500c430 r6:8277e5bc r5:00000000 r4:8500c400 [<80df1abc>] (usb_unbind_interface) from [<80aacb0c>] (device_remove drivers/base/dd.c:569 [inline]) [<80df1abc>] (usb_unbind_interface) from [<80aacb0c>] (device_remove+0x64/0x6c drivers/base/dd.c:561) r10:00000000 r9:8500dc80 r8:00000044 r7:8500c474 r6:8277e5bc r5:00000000 r4:8500c430 [<80aacaa8>] (device_remove) from [<80aadff8>] (__device_release_driver drivers/base/dd.c:1273 [inline]) [<80aacaa8>] (device_remove) from [<80aadff8>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1296) r5:00000000 r4:8500c430 [<80aade6c>] (device_release_driver_internal) from [<80aae084>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1319) r9:8500dc80 r8:83410040 r7:83410038 r6:8341000c r5:8500c430 r4:83410030 [<80aae06c>] (device_release_driver) from [<80aac16c>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:576) [<80aac0a0>] (bus_remove_device) from [<80aa64a8>] (device_del+0x148/0x38c drivers/base/core.c:3864) r9:8500dc80 r8:82f0b000 r7:04208060 r6:00000000 r5:8500c430 r4:8500c474 [<80aa6360>] (device_del) from [<80def55c>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8500c400 r7:8500dc00 r6:84ab6088 r5:00000001 r4:00000038 [<80def480>] (usb_disable_device) from [<80de43c0>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:85031200 r8:8500dcc4 r7:835d8400 r6:8500dc80 r5:8500dc00 r4:60000113 [<80de42d4>] (usb_disconnect) from [<80de7070>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80de42d4>] (usb_disconnect) from [<80de7070>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80de42d4>] (usb_disconnect) from [<80de7070>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80de42d4>] (usb_disconnect) from [<80de7070>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:8389a700 r7:8500dc00 r6:82f93400 r5:835d8610 r4:00000001 [<80de61f8>] (hub_event) from [<8026609c>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3229) r10:82fd8605 r9:82f0b000 r8:01800000 r7:ddde40c0 r6:82fd8600 r5:8389a700 r4:83415380 [<80265ee8>] (process_one_work) from [<80266c80>] (process_scheduled_works kernel/workqueue.c:3310 [inline]) [<80265ee8>] (process_one_work) from [<80266c80>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3391) r10:82f0b000 r9:834153ac r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:83415380 [<80266a94>] (worker_thread) from [<8026fcfc>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df921e78 r8:834146c0 r7:83415380 r6:80266a94 r5:82f0b000 r4:834144c0 [<8026fbf8>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf92dfb0 to 0xdf92dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fbf8 r4:834144c0 Rebooting in 86400 seconds..