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 14 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: 7400 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 845637ac object type: work_struct hint: usbnet_deferred_kevent+0x0/0x388 drivers/net/usb/usbnet.c:630 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 PID: 7400 Comm: kworker/0:31 Not tainted 6.10.0-rc4-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818d4af8>] (dump_backtrace) from [<818d4bf4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622d44 r5:00000000 r4:81fe1468 [<818d4bdc>] (show_stack) from [<818f2224>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818d4bdc>] (show_stack) from [<818f2224>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818f21d0>] (dump_stack_lvl) from [<818f2264>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285fd18 [<818f224c>] (dump_stack) from [<818d569c>] (panic+0x120/0x358 kernel/panic.c:347) [<818d557c>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818d557c>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fca0d8 r0:81fd1d28 r7:8082788c [<80243d58>] (check_panic_on_warn) from [<80243fc0>] (__warn+0x7c/0x180 kernel/panic.c:693) [<80243f44>] (__warn) from [<802442ac>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:726) r8:00000009 r7:8202fe20 r6:dfd1da7c r5:8445e000 r4:00000000 [<802440c8>] (warn_slowpath_fmt) from [<8082788c>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84563000 r8:81a02b44 r7:82058ebc r6:828c3694 r5:dfd1db24 r4:8260cda8 [<808277c8>] (debug_print_object) from [<8082912c>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<808277c8>] (debug_print_object) from [<8082912c>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:84563800 r7:845637ac r6:00000100 r5:00000003 r4:00000000 [<80828ed8>] (debug_check_no_obj_freed) from [<804bb5b4>] (slab_free_hook mm/slub.c:2163 [inline]) [<80828ed8>] (debug_check_no_obj_freed) from [<804bb5b4>] (slab_free mm/slub.c:4437 [inline]) [<80828ed8>] (debug_check_no_obj_freed) from [<804bb5b4>] (kfree+0x1a0/0x340 mm/slub.c:4558) r10:82778808 r9:8eca2080 r8:84563000 r7:804616a0 r6:82c023c0 r5:dde95180 r4:84563000 [<804bb414>] (kfree) from [<804616a0>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82778808 r9:8eca2080 r8:84563000 r7:00000000 r6:85409740 r5:852f9300 r4:84563000 [<80461674>] (kvfree) from [<8140a744>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10903) r5:852f9300 r4:84563000 [<8140a728>] (netdev_freemem) from [<81446074>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<81446048>] (netdev_release) from [<80a6076c>] (device_release+0x38/0xa8 drivers/base/core.c:2581) r5:852f9300 r4:845633b8 [<80a60734>] (device_release) from [<818ae974>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a60734>] (device_release) from [<818ae974>] (kobject_release lib/kobject.c:720 [inline]) [<80a60734>] (device_release) from [<818ae974>] (kref_put include/linux/kref.h:65 [inline]) [<80a60734>] (device_release) from [<818ae974>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b497f4 r4:845633b8 [<818ae8ac>] (kobject_put) from [<80a60998>] (put_device+0x18/0x1c drivers/base/core.c:3787) r7:8eca1c00 r6:8456310c r5:84563000 r4:00000000 [<80a60980>] (put_device) from [<813fb8d8>] (free_netdev+0x10c/0x18c net/core/dev.c:11100) [<813fb7cc>] (free_netdev) from [<80d34628>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84563774 r5:84563660 r4:00000000 [<80d3457c>] (usbnet_disconnect) from [<80d93708>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8eca1c30 r6:82778808 r5:00000000 r4:8eca1c00 [<80d93684>] (usb_unbind_interface) from [<80a68874>] (device_remove drivers/base/dd.c:568 [inline]) [<80d93684>] (usb_unbind_interface) from [<80a68874>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:8eca2080 r8:00000044 r7:8eca1c74 r6:82778808 r5:00000000 r4:8eca1c30 [<80a68810>] (device_remove) from [<80a69d8c>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a68810>] (device_remove) from [<80a69d8c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:8eca1c30 [<80a69c00>] (device_release_driver_internal) from [<80a69e18>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:8eca2080 r8:82f52c40 r7:82f52c38 r6:82f52c0c r5:8eca1c30 r4:82f52c30 [<80a69e00>] (device_release_driver) from [<80a67efc>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a67e30>] (bus_remove_device) from [<80a62014>] (device_del+0x148/0x38c drivers/base/core.c:3868) r9:8eca2080 r8:8445e000 r7:04208060 r6:00000000 r5:8eca1c30 r4:8eca1c74 [<80a61ecc>] (device_del) from [<80d91160>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8eca1c00 r7:8eca2000 r6:8ed4fb08 r5:00000001 r4:00000038 [<80d91084>] (usb_disable_device) from [<80d85fc0>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:8eca5000 r8:8eca20c4 r7:83a2b800 r6:8eca2080 r5:8eca2000 r4:60000113 [<80d85ed4>] (usb_disconnect) from [<80d88c70>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d85ed4>] (usb_disconnect) from [<80d88c70>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d85ed4>] (usb_disconnect) from [<80d88c70>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d85ed4>] (usb_disconnect) from [<80d88c70>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83ce3900 r7:8eca2000 r6:83a2b000 r5:83a2ba10 r4:00000001 [<80d87df8>] (hub_event) from [<802671bc>] (process_one_work+0x1c4/0x510 kernel/workqueue.c:3231) r10:82e69c05 r9:8445e000 r8:00800000 r7:dddd00c0 r6:82e69c00 r5:83ce3900 r4:8eb64c80 [<80266ff8>] (process_one_work) from [<80267df0>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80266ff8>] (process_one_work) from [<80267df0>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3393) r10:8445e000 r9:8eb64cac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:8eb64c80 [<80267c04>] (worker_thread) from [<80271228>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:e044de90 r8:8eb63900 r7:8eb64c80 r6:80267c04 r5:8445e000 r4:8eb63f40 [<80271124>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfd1dfb0 to 0xdfd1dff8) 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 r5:80271124 r4:8eb63f40 Rebooting in 86400 seconds..