cdc_ncm 2-1:1.0 eth1: 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 eth1: unregister 'cdc_ncm' usb-dummy_hcd.1-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4452 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 855bbfcc 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: 4452 Comm: kworker/1:52 Not tainted 6.12.0-rc7-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<8199d478>] (dump_backtrace) from [<8199d574>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622f44 r5:00000000 r4:8203df50 [<8199d55c>] (show_stack) from [<819bba40>] (__dump_stack lib/dump_stack.c:94 [inline]) [<8199d55c>] (show_stack) from [<819bba40>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120) [<819bb9ec>] (dump_stack_lvl) from [<819bba80>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:82870d18 [<819bba68>] (dump_stack) from [<8199e0a0>] (panic+0x120/0x374 kernel/panic.c:354) [<8199df80>] (panic) from [<802420d8>] (check_panic_on_warn kernel/panic.c:243 [inline]) [<8199df80>] (panic) from [<802420d8>] (get_taint+0x0/0x1c kernel/panic.c:238) r3:8260c5c4 r2:00000001 r1:82026324 r0:8202dd8c r7:80855d48 [<80242064>] (check_panic_on_warn) from [<8024223c>] (__warn+0x80/0x188 kernel/panic.c:748) [<802421bc>] (__warn) from [<8024252c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:783) r8:00000009 r7:8208d0b4 r6:df9cda8c r5:848c3000 r4:00000000 [<80242348>] (warn_slowpath_fmt) from [<80855d48>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:855bb800 r8:81a01c24 r7:820b7ec4 r6:828dd084 r5:df9cdb34 r4:8260cda8 [<80855c84>] (debug_print_object) from [<808575d8>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<80855c84>] (debug_print_object) from [<808575d8>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:855bc000 r7:855bbfcc r6:00000100 r5:00000003 r4:00000000 [<80857384>] (debug_check_no_obj_freed) from [<804c9ca0>] (slab_free_hook mm/slub.c:2273 [inline]) [<80857384>] (debug_check_no_obj_freed) from [<804c9ca0>] (slab_free mm/slub.c:4579 [inline]) [<80857384>] (debug_check_no_obj_freed) from [<804c9ca0>] (kfree+0x190/0x394 mm/slub.c:4727) r10:8277e5cc r9:8557ac80 r8:855bb800 r7:8046d500 r6:82c023c0 r5:ddeb9de0 r4:855bb800 [<804c9b10>] (kfree) from [<8046d500>] (kvfree+0x2c/0x30 mm/util.c:701) r10:8277e5cc r9:8557ac80 r8:855bb800 r7:00000000 r6:855e3f00 r5:8540ab00 r4:855bb800 [<8046d4d4>] (kvfree) from [<814ff2ec>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2034) r5:8540ab00 r4:855bb800 [<814ff2c0>] (netdev_release) from [<80aa55ac>] (device_release+0x38/0xa8 drivers/base/core.c:2574) r5:8540ab00 r4:855bbbc0 [<80aa5574>] (device_release) from [<819772cc>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80aa5574>] (device_release) from [<819772cc>] (kobject_release lib/kobject.c:720 [inline]) [<80aa5574>] (device_release) from [<819772cc>] (kref_put include/linux/kref.h:65 [inline]) [<80aa5574>] (device_release) from [<819772cc>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81b4cae4 r4:855bbbc0 [<8197722c>] (kobject_put) from [<80aa57d8>] (put_device+0x18/0x1c drivers/base/core.c:3780) r7:85578c00 r6:00000000 r5:855bb800 r4:00000000 [<80aa57c0>] (put_device) from [<814b3830>] (free_netdev+0x134/0x1ac net/core/dev.c:11259) [<814b36fc>] (free_netdev) from [<80d8a40c>] (usbnet_disconnect+0xb8/0xfc drivers/net/usb/usbnet.c:1652) r6:855bbf94 r5:855bbe80 r4:00000000 [<80d8a354>] (usbnet_disconnect) from [<80df2cf0>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:85578c30 r6:8277e5cc r5:00000000 r4:85578c00 [<80df2c6c>] (usb_unbind_interface) from [<80aad77c>] (device_remove drivers/base/dd.c:569 [inline]) [<80df2c6c>] (usb_unbind_interface) from [<80aad77c>] (device_remove+0x64/0x6c drivers/base/dd.c:561) r10:00000000 r9:8557ac80 r8:00000044 r7:85578c74 r6:8277e5cc r5:00000000 r4:85578c30 [<80aad718>] (device_remove) from [<80aaec68>] (__device_release_driver drivers/base/dd.c:1273 [inline]) [<80aad718>] (device_remove) from [<80aaec68>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1296) r5:00000000 r4:85578c30 [<80aaeadc>] (device_release_driver_internal) from [<80aaecf4>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1319) r9:8557ac80 r8:82f59f40 r7:82f59f38 r6:82f59f0c r5:85578c30 r4:82f59f30 [<80aaecdc>] (device_release_driver) from [<80aacddc>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:576) [<80aacd10>] (bus_remove_device) from [<80aa7120>] (device_del+0x148/0x38c drivers/base/core.c:3861) r9:8557ac80 r8:848c3000 r7:04208060 r6:00000000 r5:85578c30 r4:85578c74 [<80aa6fd8>] (device_del) from [<80df070c>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:85578c00 r7:8557ac00 r6:84b491c8 r5:00000001 r4:00000038 [<80df0630>] (usb_disable_device) from [<80de5570>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:84984a00 r8:8557acc4 r7:83bd2c00 r6:8557ac80 r5:8557ac00 r4:60000013 [<80de5484>] (usb_disconnect) from [<80de8220>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80de5484>] (usb_disconnect) from [<80de8220>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80de5484>] (usb_disconnect) from [<80de8220>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80de5484>] (usb_disconnect) from [<80de8220>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83e20700 r7:8557ac00 r6:83bd2400 r5:83bd2e10 r4:00000001 [<80de73a8>] (hub_event) from [<802660a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3229) r10:82e6ee05 r9:848c3000 r8:01800000 r7:ddde40c0 r6:82e6ee00 r5:83e20700 r4:855eb680 [<80265eec>] (process_one_work) from [<80266c84>] (process_scheduled_works kernel/workqueue.c:3310 [inline]) [<80265eec>] (process_one_work) from [<80266c84>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3391) r10:848c3000 r9:855eb6ac r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:855eb680 [<80266a98>] (worker_thread) from [<8026fd00>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:e0439e78 r8:855e3040 r7:855eb680 r6:80266a98 r5:848c3000 r4:854b4c40 [<8026fbfc>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf9cdfb0 to 0xdf9cdff8) 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 r5:8026fbfc r4:854b4c40 Rebooting in 86400 seconds..