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 4 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: 3860 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 8457e7cc 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: 0 UID: 0 PID: 3860 Comm: kworker/0:5 Not tainted 6.12.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<81998d98>] (dump_backtrace) from [<81998e94>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:826228c4 r5:00000000 r4:8203d370 [<81998e7c>] (show_stack) from [<819b7324>] (__dump_stack lib/dump_stack.c:94 [inline]) [<81998e7c>] (show_stack) from [<819b7324>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120) [<819b72d0>] (dump_stack_lvl) from [<819b7364>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:82870d18 [<819b734c>] (dump_stack) from [<819999c0>] (panic+0x120/0x374 kernel/panic.c:354) [<819998a0>] (panic) from [<8024217c>] (check_panic_on_warn kernel/panic.c:243 [inline]) [<819998a0>] (panic) from [<8024217c>] (get_taint+0x0/0x1c kernel/panic.c:238) r3:8260c5c4 r2:00000001 r1:82025750 r0:8202d1b8 r7:80854610 [<80242108>] (check_panic_on_warn) from [<802422e0>] (__warn+0x80/0x188 kernel/panic.c:748) [<80242260>] (__warn) from [<802425d0>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:783) r8:00000009 r7:8208c458 r6:df999a8c r5:8418c800 r4:00000000 [<802423ec>] (warn_slowpath_fmt) from [<80854610>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:8457e000 r8:81a01c24 r7:820b7248 r6:828dd084 r5:df999b34 r4:8260cda4 [<8085454c>] (debug_print_object) from [<80855ea0>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8085454c>] (debug_print_object) from [<80855ea0>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:8457e800 r7:8457e7cc r6:00000100 r5:00000003 r4:00000000 [<80855c4c>] (debug_check_no_obj_freed) from [<804c90b0>] (slab_free_hook mm/slub.c:2274 [inline]) [<80855c4c>] (debug_check_no_obj_freed) from [<804c90b0>] (slab_free mm/slub.c:4580 [inline]) [<80855c4c>] (debug_check_no_obj_freed) from [<804c90b0>] (kfree+0x190/0x394 mm/slub.c:4728) r10:8277df3c r9:8485dc80 r8:8457e000 r7:8046d068 r6:82c023c0 r5:dde954e0 r4:8457e000 [<804c8f20>] (kfree) from [<8046d068>] (kvfree+0x2c/0x30 mm/util.c:701) r10:8277df3c r9:8485dc80 r8:8457e000 r7:00000000 r6:84d6d4c0 r5:84d31800 r4:8457e000 [<8046d03c>] (kvfree) from [<814fba20>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2034) r5:84d31800 r4:8457e000 [<814fb9f4>] (netdev_release) from [<80aa3bcc>] (device_release+0x38/0xa8 drivers/base/core.c:2575) r5:84d31800 r4:8457e3c0 [<80aa3b94>] (device_release) from [<81972c0c>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80aa3b94>] (device_release) from [<81972c0c>] (kobject_release lib/kobject.c:720 [inline]) [<80aa3b94>] (device_release) from [<81972c0c>] (kref_put include/linux/kref.h:65 [inline]) [<80aa3b94>] (device_release) from [<81972c0c>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81b4c9c4 r4:8457e3c0 [<81972b6c>] (kobject_put) from [<80aa3df8>] (put_device+0x18/0x1c drivers/base/core.c:3783) r7:8485e000 r6:00000000 r5:8457e000 r4:00000000 [<80aa3de0>] (put_device) from [<814b0160>] (free_netdev+0x134/0x1ac net/core/dev.c:11251) [<814b002c>] (free_netdev) from [<80d87b48>] (usbnet_disconnect+0xb8/0xfc drivers/net/usb/usbnet.c:1652) r6:8457e794 r5:8457e680 r4:00000000 [<80d87a90>] (usbnet_disconnect) from [<80deffac>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8485e030 r6:8277df3c r5:00000000 r4:8485e000 [<80deff28>] (usb_unbind_interface) from [<80aabcbc>] (device_remove drivers/base/dd.c:569 [inline]) [<80deff28>] (usb_unbind_interface) from [<80aabcbc>] (device_remove+0x64/0x6c drivers/base/dd.c:561) r10:00000000 r9:8485dc80 r8:00000044 r7:8485e074 r6:8277df3c r5:00000000 r4:8485e030 [<80aabc58>] (device_remove) from [<80aad1a8>] (__device_release_driver drivers/base/dd.c:1273 [inline]) [<80aabc58>] (device_remove) from [<80aad1a8>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1296) r5:00000000 r4:8485e030 [<80aad01c>] (device_release_driver_internal) from [<80aad234>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1319) r9:8485dc80 r8:82f5af40 r7:82f5af38 r6:82f5af0c r5:8485e030 r4:82f5af30 [<80aad21c>] (device_release_driver) from [<80aab318>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:576) [<80aab24c>] (bus_remove_device) from [<80aa5654>] (device_del+0x148/0x38c drivers/base/core.c:3864) r9:8485dc80 r8:8418c800 r7:04208060 r6:00000000 r5:8485e030 r4:8485e074 [<80aa550c>] (device_del) from [<80ded9c8>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8485e000 r7:8485dc00 r6:84d3c5c8 r5:00000001 r4:00000038 [<80ded8ec>] (usb_disable_device) from [<80de282c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:84632c00 r8:8485dcc4 r7:83d6e000 r6:8485dc80 r5:8485dc00 r4:60000013 [<80de2740>] (usb_disconnect) from [<80de54dc>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80de2740>] (usb_disconnect) from [<80de54dc>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80de2740>] (usb_disconnect) from [<80de54dc>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80de2740>] (usb_disconnect) from [<80de54dc>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83a3b300 r7:8485dc00 r6:83863000 r5:83d6e210 r4:00000001 [<80de4664>] (hub_event) from [<802660d0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3229) r10:82e70805 r9:8418c800 r8:00800000 r7:dddd00c0 r6:82e70800 r5:83a3b300 r4:84d31500 [<80265f1c>] (process_one_work) from [<80266cb4>] (process_scheduled_works kernel/workqueue.c:3310 [inline]) [<80265f1c>] (process_one_work) from [<80266cb4>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3391) r10:8418c800 r9:84d3152c r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:84d31500 [<80266ac8>] (worker_thread) from [<8026fd20>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df841e78 r8:84d2de00 r7:84d31500 r6:80266ac8 r5:8418c800 r4:84d265c0 [<8026fc1c>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf999fb0 to 0xdf999ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fc1c r4:84d265c0 Rebooting in 86400 seconds..