usb 1-1: USB disconnect, device number 2 cdc_ncm 1-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.0-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 18068 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 84ccffac 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: 18068 Comm: kworker/1:0 Not tainted 6.10.0-rc7-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818d6078>] (dump_backtrace) from [<818d6174>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622d44 r5:00000000 r4:81fe1c70 [<818d615c>] (show_stack) from [<818f37dc>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818d615c>] (show_stack) from [<818f37dc>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818f3788>] (dump_stack_lvl) from [<818f381c>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285fd18 [<818f3804>] (dump_stack) from [<818d6c1c>] (panic+0x120/0x358 kernel/panic.c:347) [<818d6afc>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818d6afc>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fca8dc r0:81fd2534 r7:8082858c [<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 r7:82030f1c r6:e042da7c r5:83f2c800 r4:00000000 [<802440c8>] (warn_slowpath_fmt) from [<8082858c>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84ccf800 r8:81a02b44 r7:8205a01c r6:828c3454 r5:e042db24 r4:8260cda8 [<808284c8>] (debug_print_object) from [<80829e2c>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<808284c8>] (debug_print_object) from [<80829e2c>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:84cd0000 r7:84ccffac r6:00000100 r5:00000003 r4:00000000 [<80829bd8>] (debug_check_no_obj_freed) from [<804bb350>] (slab_free_hook mm/slub.c:2163 [inline]) [<80829bd8>] (debug_check_no_obj_freed) from [<804bb350>] (slab_free mm/slub.c:4438 [inline]) [<80829bd8>] (debug_check_no_obj_freed) from [<804bb350>] (kfree+0x1a0/0x340 mm/slub.c:4559) r10:82778808 r9:84548880 r8:84ccf800 r7:80461488 r6:82c023c0 r5:ddea5c20 r4:84ccf800 [<804bb1b0>] (kfree) from [<80461488>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82778808 r9:84548880 r8:84ccf800 r7:00000000 r6:84f48f40 r5:85048f00 r4:84ccf800 [<8046145c>] (kvfree) from [<8140bbf8>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10903) r5:85048f00 r4:84ccf800 [<8140bbdc>] (netdev_freemem) from [<814475d8>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<814475ac>] (netdev_release) from [<80a6146c>] (device_release+0x38/0xa8 drivers/base/core.c:2581) r5:85048f00 r4:84ccfbb8 [<80a61434>] (device_release) from [<818afef4>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a61434>] (device_release) from [<818afef4>] (kobject_release lib/kobject.c:720 [inline]) [<80a61434>] (device_release) from [<818afef4>] (kref_put include/linux/kref.h:65 [inline]) [<80a61434>] (device_release) from [<818afef4>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b49adc r4:84ccfbb8 [<818afe2c>] (kobject_put) from [<80a61698>] (put_device+0x18/0x1c drivers/base/core.c:3787) r7:8454ac00 r6:84ccf90c r5:84ccf800 r4:00000000 [<80a61680>] (put_device) from [<813fcd8c>] (free_netdev+0x10c/0x18c net/core/dev.c:11100) [<813fcc80>] (free_netdev) from [<80d35868>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84ccff74 r5:84ccfe60 r4:00000000 [<80d357bc>] (usbnet_disconnect) from [<80d94948>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8454ac30 r6:82778808 r5:00000000 r4:8454ac00 [<80d948c4>] (usb_unbind_interface) from [<80a69574>] (device_remove drivers/base/dd.c:568 [inline]) [<80d948c4>] (usb_unbind_interface) from [<80a69574>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:84548880 r8:00000044 r7:8454ac74 r6:82778808 r5:00000000 r4:8454ac30 [<80a69510>] (device_remove) from [<80a6aa8c>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a69510>] (device_remove) from [<80a6aa8c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:8454ac30 [<80a6a900>] (device_release_driver_internal) from [<80a6ab18>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:84548880 r8:82f8fc40 r7:82f8fc38 r6:82f8fc0c r5:8454ac30 r4:82f8fc30 [<80a6ab00>] (device_release_driver) from [<80a68bfc>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a68b30>] (bus_remove_device) from [<80a62d14>] (device_del+0x148/0x38c drivers/base/core.c:3868) r9:84548880 r8:83f2c800 r7:04208060 r6:00000000 r5:8454ac30 r4:8454ac74 [<80a62bcc>] (device_del) from [<80d923a0>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8454ac00 r7:84548800 r6:8512a3c8 r5:00000001 r4:00000038 [<80d922c4>] (usb_disable_device) from [<80d87200>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:8463e600 r8:845488c4 r7:83895800 r6:84548880 r5:84548800 r4:60000013 [<80d87114>] (usb_disconnect) from [<80d89eb0>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d87114>] (usb_disconnect) from [<80d89eb0>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d87114>] (usb_disconnect) from [<80d89eb0>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d87114>] (usb_disconnect) from [<80d89eb0>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:839b9100 r7:84548800 r6:83895000 r5:83895a10 r4:00000001 [<80d89038>] (hub_event) from [<80267258>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3248) r10:82e69e05 r9:83f2c800 r8:01800000 r7:ddde40c0 r6:82e69e00 r5:839b9100 r4:845efa00 [<802670a4>] (process_one_work) from [<80267e80>] (process_scheduled_works kernel/workqueue.c:3329 [inline]) [<802670a4>] (process_one_work) from [<80267e80>] (worker_thread+0x1ec/0x404 kernel/workqueue.c:3409) r10:83f2c800 r9:845efa2c r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:845efa00 [<80267c94>] (worker_thread) from [<802712c0>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:eda09e78 r8:85189540 r7:845efa00 r6:80267c94 r5:83f2c800 r4:85189280 [<802711bc>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:134) Exception stack(0xe042dfb0 to 0xe042dff8) 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 r5:802711bc r4:85189280 Rebooting in 86400 seconds..