cdc_ncm 1-1:1.0 usb0: 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 5 cdc_ncm 1-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.0-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 9 at lib/debugobjects.c:515 debug_print_object+0xc4/0xd8 lib/debugobjects.c:515 ODEBUG: free active (active state 0) object: 84b357cc object type: work_struct hint: usbnet_deferred_kevent+0x0/0x388 drivers/net/usb/usbnet.c:627 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 UID: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.11.0-rc7-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<8195d3f8>] (dump_backtrace) from [<8195d4f4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:826228c4 r5:00000000 r4:8200cac0 [<8195d4dc>] (show_stack) from [<8197b214>] (__dump_stack lib/dump_stack.c:93 [inline]) [<8195d4dc>] (show_stack) from [<8197b214>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119) [<8197b1c0>] (dump_stack_lvl) from [<8197b254>] (dump_stack+0x18/0x1c lib/dump_stack.c:128) r5:00000000 r4:8286dd18 [<8197b23c>] (dump_stack) from [<8195df9c>] (panic+0x120/0x368 kernel/panic.c:354) [<8195de7c>] (panic) from [<802421e4>] (check_panic_on_warn kernel/panic.c:243 [inline]) [<8195de7c>] (panic) from [<802421e4>] (get_taint+0x0/0x1c kernel/panic.c:238) r3:8260c5c4 r2:00000001 r1:81ff52e4 r0:81ffd0bc r7:8082de64 [<80242170>] (check_panic_on_warn) from [<80242338>] (__warn+0x7c/0x180 kernel/panic.c:741) [<802422bc>] (__warn) from [<80242624>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:774) r8:00000009 r7:8205bd94 r6:df83da8c r5:82e36000 r4:00000000 [<80242440>] (warn_slowpath_fmt) from [<8082de64>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:515) r10:00000005 r9:84b35000 r8:81a01c24 r7:82086378 r6:828d171c r5:df83db34 r4:8260cda4 [<8082dda0>] (debug_print_object) from [<8082f704>] (__debug_check_no_obj_freed lib/debugobjects.c:990 [inline]) [<8082dda0>] (debug_print_object) from [<8082f704>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1020) r8:84b35800 r7:84b357cc r6:00000100 r5:00000003 r4:00000000 [<8082f4b0>] (debug_check_no_obj_freed) from [<804bc99c>] (slab_free_hook mm/slub.c:2223 [inline]) [<8082f4b0>] (debug_check_no_obj_freed) from [<804bc99c>] (slab_free mm/slub.c:4477 [inline]) [<8082f4b0>] (debug_check_no_obj_freed) from [<804bc99c>] (kfree+0x198/0x338 mm/slub.c:4598) r10:82779fdc r9:8448e080 r8:84b35000 r7:80461778 r6:82c023c0 r5:ddea22c0 r4:84b35000 [<804bc804>] (kfree) from [<80461778>] (kvfree+0x2c/0x30 mm/util.c:696) r10:82779fdc r9:8448e080 r8:84b35000 r7:00000000 r6:84bc9ec0 r5:837de480 r4:84b35000 [<8046174c>] (kvfree) from [<814c5d3c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) r5:837de480 r4:84b35000 [<814c5d10>] (netdev_release) from [<80a747f0>] (device_release+0x38/0xa8 drivers/base/core.c:2582) r5:837de480 r4:84b353c0 [<80a747b8>] (device_release) from [<81937248>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a747b8>] (device_release) from [<81937248>] (kobject_release lib/kobject.c:720 [inline]) [<80a747b8>] (device_release) from [<81937248>] (kref_put include/linux/kref.h:65 [inline]) [<80a747b8>] (device_release) from [<81937248>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81b4b7ac r4:84b353c0 [<819371a8>] (kobject_put) from [<80a74a1c>] (put_device+0x18/0x1c drivers/base/core.c:3790) r7:8448c800 r6:84b3510c r5:84b35000 r4:00000000 [<80a74a04>] (put_device) from [<8147ac74>] (free_netdev+0x114/0x18c net/core/dev.c:11205) [<8147ab60>] (free_netdev) from [<80d569c8>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1633) r6:84b35794 r5:84b35680 r4:00000000 [<80d5691c>] (usbnet_disconnect) from [<80dbe650>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8448c830 r6:82779fdc r5:00000000 r4:8448c800 [<80dbe5cc>] (usb_unbind_interface) from [<80a7c8f4>] (device_remove drivers/base/dd.c:568 [inline]) [<80dbe5cc>] (usb_unbind_interface) from [<80a7c8f4>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:8448e080 r8:00000044 r7:8448c874 r6:82779fdc r5:00000000 r4:8448c830 [<80a7c890>] (device_remove) from [<80a7de0c>] (__device_release_driver drivers/base/dd.c:1272 [inline]) [<80a7c890>] (device_remove) from [<80a7de0c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295) r5:00000000 r4:8448c830 [<80a7dc80>] (device_release_driver_internal) from [<80a7de98>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318) r9:8448e080 r8:83440f40 r7:83440f38 r6:83440f0c r5:8448c830 r4:83440f30 [<80a7de80>] (device_release_driver) from [<80a7bf78>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a7beac>] (bus_remove_device) from [<80a76088>] (device_del+0x148/0x38c drivers/base/core.c:3871) r9:8448e080 r8:82e36000 r7:04208060 r6:00000000 r5:8448c830 r4:8448c874 [<80a75f40>] (device_del) from [<80dbc06c>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8448c800 r7:8448e000 r6:847a6b08 r5:00000001 r4:00000038 [<80dbbf90>] (usb_disable_device) from [<80db0ed0>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:851baa00 r8:8448e0c4 r7:83c95000 r6:8448e080 r5:8448e000 r4:60000013 [<80db0de4>] (usb_disconnect) from [<80db3b80>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80db0de4>] (usb_disconnect) from [<80db3b80>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80db0de4>] (usb_disconnect) from [<80db3b80>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80db0de4>] (usb_disconnect) from [<80db3b80>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83b5fd00 r7:8448e000 r6:83c94800 r5:83c95210 r4:00000001 [<80db2d08>] (hub_event) from [<80265f04>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r10:82fd8405 r9:82e36000 r8:00800000 r7:dddd0000 r6:82fd8400 r5:83b5fd00 r4:82cb5100 [<80265d50>] (process_one_work) from [<80266ae8>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80265d50>] (process_one_work) from [<80266ae8>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3393) r10:82e36000 r9:82cb512c r8:61c88647 r7:dddd0020 r6:82604d40 r5:dddd0000 r4:82cb5100 [<802668fc>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df839e78 r8:82cb4a80 r7:82cb5100 r6:802668fc r5:82e36000 r4:82cb4180 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf83dfb0 to 0xdf83dff8) 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 r5:8026fa00 r4:82cb4180 Rebooting in 86400 seconds..