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: 1 PID: 3827 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 853387cc 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: 1 UID: 0 PID: 3827 Comm: kworker/1:7 Not tainted 6.11.0-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<81990bc0>] (dump_backtrace) from [<81990cbc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:826228c4 r5:00000000 r4:82039b90 [<81990ca4>] (show_stack) from [<819aef9c>] (__dump_stack lib/dump_stack.c:94 [inline]) [<81990ca4>] (show_stack) from [<819aef9c>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120) [<819aef48>] (dump_stack_lvl) from [<819aefdc>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:82870d18 [<819aefc4>] (dump_stack) from [<819917e8>] (panic+0x120/0x374 kernel/panic.c:354) [<819916c8>] (panic) from [<8024217c>] (check_panic_on_warn kernel/panic.c:243 [inline]) [<819916c8>] (panic) from [<8024217c>] (get_taint+0x0/0x1c kernel/panic.c:238) r3:8260c5c4 r2:00000001 r1:82021f34 r0:8202999c r7:80852828 [<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 r7:820888ac r6:df9c1a8c r5:844c2400 r4:00000000 [<802423ec>] (warn_slowpath_fmt) from [<80852828>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:85338000 r8:81a01c30 r7:820b2fac r6:828dd084 r5:df9c1b34 r4:8260cda4 [<80852764>] (debug_print_object) from [<808540b8>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<80852764>] (debug_print_object) from [<808540b8>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:85338800 r7:853387cc r6:00000100 r5:00000003 r4:00000000 [<80853e64>] (debug_check_no_obj_freed) from [<804c7a00>] (slab_free_hook mm/slub.c:2274 [inline]) [<80853e64>] (debug_check_no_obj_freed) from [<804c7a00>] (slab_free mm/slub.c:4580 [inline]) [<80853e64>] (debug_check_no_obj_freed) from [<804c7a00>] (kfree+0x190/0x394 mm/slub.c:4728) r10:8277d7dc r9:852c1880 r8:85338000 r7:8046b9e8 r6:82c023c0 r5:ddeb43e0 r4:85338000 [<804c7870>] (kfree) from [<8046b9e8>] (kvfree+0x2c/0x30 mm/util.c:701) r10:8277d7dc r9:852c1880 r8:85338000 r7:00000000 r6:852cc740 r5:85012900 r4:85338000 [<8046b9bc>] (kvfree) from [<814f3c60>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2034) r5:85012900 r4:85338000 [<814f3c34>] (netdev_release) from [<80a9d8dc>] (device_release+0x38/0xa8 drivers/base/core.c:2582) r5:85012900 r4:853383c0 [<80a9d8a4>] (device_release) from [<8196ab6c>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a9d8a4>] (device_release) from [<8196ab6c>] (kobject_release lib/kobject.c:720 [inline]) [<80a9d8a4>] (device_release) from [<8196ab6c>] (kref_put include/linux/kref.h:65 [inline]) [<80a9d8a4>] (device_release) from [<8196ab6c>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81b4c2ac r4:853383c0 [<8196aacc>] (kobject_put) from [<80a9db08>] (put_device+0x18/0x1c drivers/base/core.c:3790) r7:852c3400 r6:00000000 r5:85338000 r4:00000000 [<80a9daf0>] (put_device) from [<814a7dc8>] (free_netdev+0x134/0x1ac net/core/dev.c:11251) [<814a7c94>] (free_netdev) from [<80d81978>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1633) r6:85338794 r5:85338680 r4:00000000 [<80d818cc>] (usbnet_disconnect) from [<80de9834>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:852c3430 r6:8277d7dc r5:00000000 r4:852c3400 [<80de97b0>] (usb_unbind_interface) from [<80aa59dc>] (device_remove drivers/base/dd.c:568 [inline]) [<80de97b0>] (usb_unbind_interface) from [<80aa59dc>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:852c1880 r8:00000044 r7:852c3474 r6:8277d7dc r5:00000000 r4:852c3430 [<80aa5978>] (device_remove) from [<80aa6ef4>] (__device_release_driver drivers/base/dd.c:1272 [inline]) [<80aa5978>] (device_remove) from [<80aa6ef4>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295) r5:00000000 r4:852c3430 [<80aa6d68>] (device_release_driver_internal) from [<80aa6f80>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318) r9:852c1880 r8:82facb40 r7:82facb38 r6:82facb0c r5:852c3430 r4:82facb30 [<80aa6f68>] (device_release_driver) from [<80aa5064>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80aa4f98>] (bus_remove_device) from [<80a9f174>] (device_del+0x148/0x38c drivers/base/core.c:3871) r9:852c1880 r8:844c2400 r7:04208060 r6:00000000 r5:852c3430 r4:852c3474 [<80a9f02c>] (device_del) from [<80de7250>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:852c3400 r7:852c1800 r6:85044d88 r5:00000001 r4:00000038 [<80de7174>] (usb_disable_device) from [<80ddc0b4>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:84870c00 r8:852c18c4 r7:83def400 r6:852c1880 r5:852c1800 r4:60000013 [<80ddbfc8>] (usb_disconnect) from [<80dded64>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80ddbfc8>] (usb_disconnect) from [<80dded64>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80ddbfc8>] (usb_disconnect) from [<80dded64>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80ddbfc8>] (usb_disconnect) from [<80dded64>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83806700 r7:852c1800 r6:83deec00 r5:83def610 r4:00000001 [<80dddeec>] (hub_event) from [<80266148>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3229) r10:82e6b605 r9:844c2400 r8:01800000 r7:ddde40c0 r6:82e6b600 r5:83806700 r4:84831a00 [<80265f94>] (process_one_work) from [<80266d2c>] (process_scheduled_works kernel/workqueue.c:3310 [inline]) [<80265f94>] (process_one_work) from [<80266d2c>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3391) r10:844c2400 r9:84831a2c r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:84831a00 [<80266b40>] (worker_thread) from [<8026fd9c>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:dff09e78 r8:85027a40 r7:84831a00 r6:80266b40 r5:844c2400 r4:85022680 [<8026fc98>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf9c1fb0 to 0xdf9c1ff8) 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 r5:8026fc98 r4:85022680 Rebooting in 86400 seconds..