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 12 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: 10 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 84eabfac 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: 10 Comm: kworker/0:1 Not tainted 6.10.0-rc7-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818d4fd8>] (dump_backtrace) from [<818d50d4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622d44 r5:00000000 r4:81fe1570 [<818d50bc>] (show_stack) from [<818f273c>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818d50bc>] (show_stack) from [<818f273c>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818f26e8>] (dump_stack_lvl) from [<818f277c>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285fd18 [<818f2764>] (dump_stack) from [<818d5b7c>] (panic+0x120/0x358 kernel/panic.c:347) [<818d5a5c>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818d5a5c>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fca1dc r0:81fd1e34 r7:8082726c [<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 r7:8202fddc r6:df841a7c r5:82e2ec00 r4:00000000 [<802440c8>] (warn_slowpath_fmt) from [<8082726c>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84eab800 r8:81a02b44 r7:82058edc r6:828c3454 r5:df841b24 r4:8260cda8 [<808271a8>] (debug_print_object) from [<80828b0c>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<808271a8>] (debug_print_object) from [<80828b0c>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:84eac000 r7:84eabfac r6:00000100 r5:00000003 r4:00000000 [<808288b8>] (debug_check_no_obj_freed) from [<804baf40>] (slab_free_hook mm/slub.c:2163 [inline]) [<808288b8>] (debug_check_no_obj_freed) from [<804baf40>] (slab_free mm/slub.c:4438 [inline]) [<808288b8>] (debug_check_no_obj_freed) from [<804baf40>] (kfree+0x1a0/0x340 mm/slub.c:4559) r10:82778808 r9:8515a880 r8:84eab800 r7:804611b8 r6:82c023c0 r5:ddea9fa0 r4:84eab800 [<804bada0>] (kfree) from [<804611b8>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82778808 r9:8515a880 r8:84eab800 r7:00000000 r6:83f94a00 r5:84f06f00 r4:84eab800 [<8046118c>] (kvfree) from [<8140a884>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10903) r5:84f06f00 r4:84eab800 [<8140a868>] (netdev_freemem) from [<81446260>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<81446234>] (netdev_release) from [<80a6014c>] (device_release+0x38/0xa8 drivers/base/core.c:2581) r5:84f06f00 r4:84eabbb8 [<80a60114>] (device_release) from [<818aee54>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a60114>] (device_release) from [<818aee54>] (kobject_release lib/kobject.c:720 [inline]) [<80a60114>] (device_release) from [<818aee54>] (kref_put include/linux/kref.h:65 [inline]) [<80a60114>] (device_release) from [<818aee54>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b497dc r4:84eabbb8 [<818aed8c>] (kobject_put) from [<80a60378>] (put_device+0x18/0x1c drivers/base/core.c:3787) r7:8515b000 r6:84eab90c r5:84eab800 r4:00000000 [<80a60360>] (put_device) from [<813fba18>] (free_netdev+0x10c/0x18c net/core/dev.c:11100) [<813fb90c>] (free_netdev) from [<80d34488>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84eabf74 r5:84eabe60 r4:00000000 [<80d343dc>] (usbnet_disconnect) from [<80d93568>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8515b030 r6:82778808 r5:00000000 r4:8515b000 [<80d934e4>] (usb_unbind_interface) from [<80a68254>] (device_remove drivers/base/dd.c:568 [inline]) [<80d934e4>] (usb_unbind_interface) from [<80a68254>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:8515a880 r8:00000044 r7:8515b074 r6:82778808 r5:00000000 r4:8515b030 [<80a681f0>] (device_remove) from [<80a6976c>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a681f0>] (device_remove) from [<80a6976c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:8515b030 [<80a695e0>] (device_release_driver_internal) from [<80a697f8>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:8515a880 r8:82f52c40 r7:82f52c38 r6:82f52c0c r5:8515b030 r4:82f52c30 [<80a697e0>] (device_release_driver) from [<80a678dc>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a67810>] (bus_remove_device) from [<80a619f4>] (device_del+0x148/0x38c drivers/base/core.c:3868) r9:8515a880 r8:82e2ec00 r7:04208060 r6:00000000 r5:8515b030 r4:8515b074 [<80a618ac>] (device_del) from [<80d90fc0>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8515b000 r7:8515a800 r6:84d72288 r5:00000001 r4:00000038 [<80d90ee4>] (usb_disable_device) from [<80d85e20>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:84304400 r8:8515a8c4 r7:83a6e800 r6:8515a880 r5:8515a800 r4:60000113 [<80d85d34>] (usb_disconnect) from [<80d88ad0>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d85d34>] (usb_disconnect) from [<80d88ad0>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d85d34>] (usb_disconnect) from [<80d88ad0>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d85d34>] (usb_disconnect) from [<80d88ad0>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83c3f500 r7:8515a800 r6:83a6e000 r5:83a6ea10 r4:00000001 [<80d87c58>] (hub_event) from [<80267258>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3248) r10:82e69c05 r9:82e2ec00 r8:00800000 r7:dddd00c0 r6:82e69c00 r5:83c3f500 r4:82cb2000 [<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) r10:82e2ec00 r9:82cb202c r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:82cb2000 [<80267c94>] (worker_thread) from [<802712c0>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df839e78 r8:82cb1b80 r7:82cb2000 r6:80267c94 r5:82e2ec00 r4:82cb1a40 [<802711bc>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf841fb0 to 0xdf841ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802711bc r4:82cb1a40 Rebooting in 86400 seconds..