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 2 cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.1-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5571 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 8511bfcc 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: 1 UID: 0 PID: 5571 Comm: kworker/1:14 Not tainted 6.12.0-rc2-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<819993d8>] (dump_backtrace) from [<819994d4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622f44 r5:00000000 r4:8203d3c8 [<819994bc>] (show_stack) from [<819b7964>] (__dump_stack lib/dump_stack.c:94 [inline]) [<819994bc>] (show_stack) from [<819b7964>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120) [<819b7910>] (dump_stack_lvl) from [<819b79a4>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:82870d18 [<819b798c>] (dump_stack) from [<8199a000>] (panic+0x120/0x374 kernel/panic.c:354) [<81999ee0>] (panic) from [<802420e0>] (check_panic_on_warn kernel/panic.c:243 [inline]) [<81999ee0>] (panic) from [<802420e0>] (get_taint+0x0/0x1c kernel/panic.c:238) r3:8260c5c4 r2:00000001 r1:820257a8 r0:8202d210 r7:808546e0 [<8024206c>] (check_panic_on_warn) from [<80242244>] (__warn+0x80/0x188 kernel/panic.c:748) [<802421c4>] (__warn) from [<80242534>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:783) r8:00000009 r7:8208c4c4 r6:dfa51a8c r5:8418c800 r4:00000000 [<80242350>] (warn_slowpath_fmt) from [<808546e0>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:8511b800 r8:81a01c24 r7:820b72b4 r6:828dd084 r5:dfa51b34 r4:8260cda4 [<8085461c>] (debug_print_object) from [<80855f70>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8085461c>] (debug_print_object) from [<80855f70>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:8511c000 r7:8511bfcc r6:00000100 r5:00000003 r4:00000000 [<80855d1c>] (debug_check_no_obj_freed) from [<804c908c>] (slab_free_hook mm/slub.c:2273 [inline]) [<80855d1c>] (debug_check_no_obj_freed) from [<804c908c>] (slab_free mm/slub.c:4579 [inline]) [<80855d1c>] (debug_check_no_obj_freed) from [<804c908c>] (kfree+0x190/0x394 mm/slub.c:4727) r10:8277e5bc r9:85044080 r8:8511b800 r7:8046d068 r6:82c023c0 r5:ddeaf760 r4:8511b800 [<804c8efc>] (kfree) from [<8046d068>] (kvfree+0x2c/0x30 mm/util.c:701) r10:8277e5bc r9:85044080 r8:8511b800 r7:00000000 r6:84967480 r5:84960780 r4:8511b800 [<8046d03c>] (kvfree) from [<814fb938>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2034) r5:84960780 r4:8511b800 [<814fb90c>] (netdev_release) from [<80aa3a0c>] (device_release+0x38/0xa8 drivers/base/core.c:2575) r5:84960780 r4:8511bbc0 [<80aa39d4>] (device_release) from [<8197324c>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80aa39d4>] (device_release) from [<8197324c>] (kobject_release lib/kobject.c:720 [inline]) [<80aa39d4>] (device_release) from [<8197324c>] (kref_put include/linux/kref.h:65 [inline]) [<80aa39d4>] (device_release) from [<8197324c>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81b4c8c4 r4:8511bbc0 [<819731ac>] (kobject_put) from [<80aa3c38>] (put_device+0x18/0x1c drivers/base/core.c:3783) r7:8416ec00 r6:00000000 r5:8511b800 r4:00000000 [<80aa3c20>] (put_device) from [<814affd8>] (free_netdev+0x134/0x1ac net/core/dev.c:11255) [<814afea4>] (free_netdev) from [<80d87af0>] (usbnet_disconnect+0xb8/0xfc drivers/net/usb/usbnet.c:1652) r6:8511bf94 r5:8511be80 r4:00000000 [<80d87a38>] (usbnet_disconnect) from [<80df01c0>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8416ec30 r6:8277e5bc r5:00000000 r4:8416ec00 [<80df013c>] (usb_unbind_interface) from [<80aabafc>] (device_remove drivers/base/dd.c:569 [inline]) [<80df013c>] (usb_unbind_interface) from [<80aabafc>] (device_remove+0x64/0x6c drivers/base/dd.c:561) r10:00000000 r9:85044080 r8:00000044 r7:8416ec74 r6:8277e5bc r5:00000000 r4:8416ec30 [<80aaba98>] (device_remove) from [<80aacfe8>] (__device_release_driver drivers/base/dd.c:1273 [inline]) [<80aaba98>] (device_remove) from [<80aacfe8>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1296) r5:00000000 r4:8416ec30 [<80aace5c>] (device_release_driver_internal) from [<80aad074>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1319) r9:85044080 r8:82eb4c40 r7:82eb4c38 r6:82eb4c0c r5:8416ec30 r4:82eb4c30 [<80aad05c>] (device_release_driver) from [<80aab158>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:576) [<80aab08c>] (bus_remove_device) from [<80aa5494>] (device_del+0x148/0x38c drivers/base/core.c:3864) r9:85044080 r8:8418c800 r7:04208060 r6:00000000 r5:8416ec30 r4:8416ec74 [<80aa534c>] (device_del) from [<80dedbdc>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8416ec00 r7:85044000 r6:85090408 r5:00000001 r4:00000038 [<80dedb00>] (usb_disable_device) from [<80de2a40>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:849a2600 r8:850440c4 r7:837a6800 r6:85044080 r5:85044000 r4:60000013 [<80de2954>] (usb_disconnect) from [<80de56f0>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80de2954>] (usb_disconnect) from [<80de56f0>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80de2954>] (usb_disconnect) from [<80de56f0>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80de2954>] (usb_disconnect) from [<80de56f0>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83a39b00 r7:85044000 r6:837a6000 r5:837a6a10 r4:00000001 [<80de4878>] (hub_event) from [<80266034>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3229) r10:82fcf605 r9:8418c800 r8:01800000 r7:ddde40c0 r6:82fcf600 r5:83a39b00 r4:84d06500 [<80265e80>] (process_one_work) from [<80266c18>] (process_scheduled_works kernel/workqueue.c:3310 [inline]) [<80265e80>] (process_one_work) from [<80266c18>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3391) r10:8418c800 r9:84d0652c r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:84d06500 [<80266a2c>] (worker_thread) from [<8026fc90>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:e0111e78 r8:84b0b1c0 r7:84d06500 r6:80266a2c r5:8418c800 r4:84d082c0 [<8026fb8c>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfa51fb0 to 0xdfa51ff8) 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 r5:8026fb8c r4:84d082c0 Rebooting in 86400 seconds..