cdc_ncm 2-1:1.0 usb0: register 'cdc_ncm' at usb-dummy_hcd.1-1, CDC NCM (NO ZLP), 42:42:42:42:42:42 usb 2-1: USB disconnect, device number 10 cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.1-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8343 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 84d5cfac 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: 0 PID: 8343 Comm: kworker/0:2 Not tainted 6.10.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818d3698>] (dump_backtrace) from [<818d3794>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622d44 r5:00000000 r4:81fe11d0 [<818d377c>] (show_stack) from [<818f0da4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818d377c>] (show_stack) from [<818f0da4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818f0d50>] (dump_stack_lvl) from [<818f0de4>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285fd18 [<818f0dcc>] (dump_stack) from [<818d423c>] (panic+0x120/0x358 kernel/panic.c:347) [<818d411c>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818d411c>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fc9e40 r0:81fd1a90 r7:8082725c [<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 r7:8202fb80 r6:dfc7da7c r5:8477c800 r4:00000000 [<802440c8>] (warn_slowpath_fmt) from [<8082725c>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84d5c800 r8:81a02b44 r7:82058bf4 r6:828c3694 r5:dfc7db24 r4:8260cda8 [<80827198>] (debug_print_object) from [<80828afc>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<80827198>] (debug_print_object) from [<80828afc>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:84d5d000 r7:84d5cfac r6:00000100 r5:00000003 r4:00000000 [<808288a8>] (debug_check_no_obj_freed) from [<804bb30c>] (slab_free_hook mm/slub.c:2162 [inline]) [<808288a8>] (debug_check_no_obj_freed) from [<804bb30c>] (slab_free mm/slub.c:4436 [inline]) [<808288a8>] (debug_check_no_obj_freed) from [<804bb30c>] (kfree+0x1a0/0x340 mm/slub.c:4557) r10:827787f0 r9:84335480 r8:84d5c800 r7:80461630 r6:82c023c0 r5:ddea7060 r4:84d5c800 [<804bb16c>] (kfree) from [<80461630>] (kvfree+0x2c/0x30 mm/util.c:680) r10:827787f0 r9:84335480 r8:84d5c800 r7:00000000 r6:846dab40 r5:850c0c00 r4:84d5c800 [<80461604>] (kvfree) from [<8140952c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10902) r5:850c0c00 r4:84d5c800 [<81409510>] (netdev_freemem) from [<81444df4>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<81444dc8>] (netdev_release) from [<80a6019c>] (device_release+0x38/0xa8 drivers/base/core.c:2581) r5:850c0c00 r4:84d5cbb8 [<80a60164>] (device_release) from [<818ad514>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a60164>] (device_release) from [<818ad514>] (kobject_release lib/kobject.c:720 [inline]) [<80a60164>] (device_release) from [<818ad514>] (kref_put include/linux/kref.h:65 [inline]) [<80a60164>] (device_release) from [<818ad514>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b4980c r4:84d5cbb8 [<818ad44c>] (kobject_put) from [<80a603c8>] (put_device+0x18/0x1c drivers/base/core.c:3829) r7:84334400 r6:84d5c90c r5:84d5c800 r4:00000000 [<80a603b0>] (put_device) from [<813fa6c0>] (free_netdev+0x10c/0x18c net/core/dev.c:11099) [<813fa5b4>] (free_netdev) from [<80d33960>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84d5cf74 r5:84d5ce60 r4:00000000 [<80d338b4>] (usbnet_disconnect) from [<80d92760>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:84334430 r6:827787f0 r5:00000000 r4:84334400 [<80d926dc>] (usb_unbind_interface) from [<80a6828c>] (device_remove drivers/base/dd.c:568 [inline]) [<80d926dc>] (usb_unbind_interface) from [<80a6828c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:84335480 r8:00000044 r7:84334474 r6:827787f0 r5:00000000 r4:84334430 [<80a68228>] (device_remove) from [<80a697a4>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a68228>] (device_remove) from [<80a697a4>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:84334430 [<80a69618>] (device_release_driver_internal) from [<80a69830>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:84335480 r8:82f52b40 r7:82f52b38 r6:82f52b0c r5:84334430 r4:82f52b30 [<80a69818>] (device_release_driver) from [<80a67914>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a67848>] (bus_remove_device) from [<80a61a2c>] (device_del+0x148/0x38c drivers/base/core.c:3910) r9:84335480 r8:8477c800 r7:04208060 r6:00000000 r5:84334430 r4:84334474 [<80a618e4>] (device_del) from [<80d901b8>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:84334400 r7:84335400 r6:84fda548 r5:00000001 r4:00000038 [<80d900dc>] (usb_disable_device) from [<80d85018>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:8586d200 r8:843354c4 r7:838d1c00 r6:84335480 r5:84335400 r4:60000013 [<80d84f2c>] (usb_disconnect) from [<80d87cc8>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d84f2c>] (usb_disconnect) from [<80d87cc8>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d84f2c>] (usb_disconnect) from [<80d87cc8>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d84f2c>] (usb_disconnect) from [<80d87cc8>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:837def00 r7:84335400 r6:838d1400 r5:838d1e10 r4:00000001 [<80d86e50>] (hub_event) from [<802671bc>] (process_one_work+0x1c4/0x510 kernel/workqueue.c:3231) r10:82e69c05 r9:8477c800 r8:00800000 r7:dddd00c0 r6:82e69c00 r5:837def00 r4:84fc2400 [<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) r10:8477c800 r9:84fc242c r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:84fc2400 [<80267c04>] (worker_thread) from [<80271228>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:dfd05e90 r8:84fda880 r7:84fc2400 r6:80267c04 r5:8477c800 r4:85145640 [<80271124>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfc7dfb0 to 0xdfc7dff8) 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 r5:80271124 r4:85145640 Rebooting in 86400 seconds..