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 19 cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.1-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5706 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 852dcfac 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: 5706 Comm: kworker/0:9 Not tainted 6.9.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<81878ffc>] (dump_backtrace) from [<818790f8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fc471c [<818790e0>] (show_stack) from [<81896894>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818790e0>] (show_stack) from [<81896894>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<81896840>] (dump_stack_lvl) from [<818968d4>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82858d18 [<818968bc>] (dump_stack) from [<81879ba0>] (panic+0x120/0x358 kernel/panic.c:348) [<81879a80>] (panic) from [<8024390c>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<81879a80>] (panic) from [<8024390c>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fad3a0 r0:81fb4f48 r7:8080b9b0 [<80243898>] (check_panic_on_warn) from [<80243b00>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243a84>] (__warn) from [<80243dec>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:820112ec r6:dfb3da7c r5:84cf8c00 r4:00000000 [<80243c08>] (warn_slowpath_fmt) from [<8080b9b0>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:852dc800 r8:81a02b44 r7:820391f4 r6:828bc414 r5:dfb3db24 r4:8260ce18 [<8080b8ec>] (debug_print_object) from [<8080d248>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080b8ec>] (debug_print_object) from [<8080d248>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:852dd000 r7:852dcfac r6:00000100 r5:00000003 r4:00000000 [<8080cff4>] (debug_check_no_obj_freed) from [<804b2620>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080cff4>] (debug_check_no_obj_freed) from [<804b2620>] (slab_free mm/slub.c:4280 [inline]) [<8080cff4>] (debug_check_no_obj_freed) from [<804b2620>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a30 r9:85289480 r8:852dc800 r7:8045a7c8 r6:82c023c0 r5:ddeb3660 r4:852dc800 [<804b2480>] (kfree) from [<8045a7c8>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a30 r9:85289480 r8:852dc800 r7:00000000 r6:8500cc00 r5:84ea7c00 r4:852dc800 [<8045a79c>] (kvfree) from [<813b382c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797) r5:84ea7c00 r4:852dc800 [<813b3810>] (netdev_freemem) from [<813ee88c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<813ee860>] (netdev_release) from [<80a41bd0>] (device_release+0x38/0xa8 drivers/base/core.c:2565) r5:84ea7c00 r4:852dcbb8 [<80a41b98>] (device_release) from [<81852f60>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a41b98>] (device_release) from [<81852f60>] (kobject_release lib/kobject.c:720 [inline]) [<80a41b98>] (device_release) from [<81852f60>] (kref_put include/linux/kref.h:65 [inline]) [<80a41b98>] (device_release) from [<81852f60>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b485c4 r4:852dcbb8 [<81852e98>] (kobject_put) from [<80a41e58>] (put_device+0x18/0x1c drivers/base/core.c:3813) r7:85289800 r6:852dc90c r5:852dc800 r4:00000000 [<80a41e40>] (put_device) from [<813a4b78>] (free_netdev+0x108/0x188 net/core/dev.c:10993) [<813a4a70>] (free_netdev) from [<80d11250>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:852dcf74 r5:852dce60 r4:00000000 [<80d111a4>] (usbnet_disconnect) from [<80d6c1c8>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:85289830 r6:82775a30 r5:00000000 r4:85289800 [<80d6c144>] (usb_unbind_interface) from [<80a49cac>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6c144>] (usb_unbind_interface) from [<80a49cac>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:85289480 r9:828eccc4 r8:00000044 r7:85289874 r6:82775a30 r5:00000000 r4:85289830 [<80a49c48>] (device_remove) from [<80a4b1c4>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a49c48>] (device_remove) from [<80a4b1c4>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:85289830 [<80a4b038>] (device_release_driver_internal) from [<80a4b250>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eccc4 r8:82ecde40 r7:82ecde38 r6:82ecde0c r5:85289830 r4:82ecde30 [<80a4b238>] (device_release_driver) from [<80a49350>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a49284>] (bus_remove_device) from [<80a433d4>] (device_del+0x15c/0x3bc drivers/base/core.c:3894) r9:828eccc4 r8:85289800 r7:84cf8c00 r6:84794ac8 r5:04208060 r4:85289830 [<80a43278>] (device_del) from [<80d69c24>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:85289800 r7:85289400 r6:84794ac8 r5:00000001 r4:00000038 [<80d69b48>] (usb_disable_device) from [<80d5ea90>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2296) r10:00000001 r9:844b1800 r8:852894c4 r7:83629800 r6:85289480 r5:85289400 r4:60000113 [<80d5e9a4>] (usb_disconnect) from [<80d61740>] (hub_port_connect drivers/usb/core/hub.c:5352 [inline]) [<80d5e9a4>] (usb_disconnect) from [<80d61740>] (hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]) [<80d5e9a4>] (usb_disconnect) from [<80d61740>] (port_event drivers/usb/core/hub.c:5812 [inline]) [<80d5e9a4>] (usb_disconnect) from [<80d61740>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5894) r10:00000001 r9:00000100 r8:837d6700 r7:85289400 r6:83629000 r5:83629a10 r4:00000001 [<80d608c8>] (hub_event) from [<8026660c>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82fd2405 r9:84cf8c00 r8:00000080 r7:dddd00c0 r6:82fd2400 r5:837d6700 r4:84e7b580 [<80266454>] (process_one_work) from [<80267330>] (process_scheduled_works kernel/workqueue.c:3335 [inline]) [<80266454>] (process_one_work) from [<80267330>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3416) r10:84cf8c00 r9:84e7b5ac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:84e7b580 [<80267144>] (worker_thread) from [<80270044>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df989e90 r8:84e84200 r7:84e7b580 r6:80267144 r5:84cf8c00 r4:84e84400 [<8026ff40>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfb3dfb0 to 0xdfb3dff8) 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 r5:8026ff40 r4:84e84400 Rebooting in 86400 seconds..