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 31 cdc_ncm 1-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.0-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 10690 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 853d2fac 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: 1 PID: 10690 Comm: kworker/1:27 Not tainted 6.9.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<8187945c>] (dump_backtrace) from [<81879558>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fc474c [<81879540>] (show_stack) from [<81896cf4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<81879540>] (show_stack) from [<81896cf4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<81896ca0>] (dump_stack_lvl) from [<81896d34>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82858d18 [<81896d1c>] (dump_stack) from [<8187a000>] (panic+0x120/0x358 kernel/panic.c:348) [<81879ee0>] (panic) from [<8024390c>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<81879ee0>] (panic) from [<8024390c>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fad3d0 r0:81fb4f78 r7:8080ba28 [<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 r7:82011370 r6:dfee5a7c r5:83681800 r4:00000000 [<80243c08>] (warn_slowpath_fmt) from [<8080ba28>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:853d2800 r8:81a02b44 r7:8203927c r6:828bc414 r5:dfee5b24 r4:8260ce18 [<8080b964>] (debug_print_object) from [<8080d2c0>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080b964>] (debug_print_object) from [<8080d2c0>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:853d3000 r7:853d2fac r6:00000100 r5:00000003 r4:00000000 [<8080d06c>] (debug_check_no_obj_freed) from [<804b26b0>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080d06c>] (debug_check_no_obj_freed) from [<804b26b0>] (slab_free mm/slub.c:4280 [inline]) [<8080d06c>] (debug_check_no_obj_freed) from [<804b26b0>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a30 r9:85d84480 r8:853d2800 r7:8045a848 r6:82c023c0 r5:ddeb5940 r4:853d2800 [<804b2510>] (kfree) from [<8045a848>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a30 r9:85d84480 r8:853d2800 r7:00000000 r6:85364ac0 r5:85ca0b80 r4:853d2800 [<8045a81c>] (kvfree) from [<813b391c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797) r5:85ca0b80 r4:853d2800 [<813b3900>] (netdev_freemem) from [<813ee97c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<813ee950>] (netdev_release) from [<80a41d28>] (device_release+0x38/0xa8 drivers/base/core.c:2565) r5:85ca0b80 r4:853d2bb8 [<80a41cf0>] (device_release) from [<818533c0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a41cf0>] (device_release) from [<818533c0>] (kobject_release lib/kobject.c:720 [inline]) [<80a41cf0>] (device_release) from [<818533c0>] (kref_put include/linux/kref.h:65 [inline]) [<80a41cf0>] (device_release) from [<818533c0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b485c4 r4:853d2bb8 [<818532f8>] (kobject_put) from [<80a41fb0>] (put_device+0x18/0x1c drivers/base/core.c:3813) r7:85d84800 r6:853d290c r5:853d2800 r4:00000000 [<80a41f98>] (put_device) from [<813a4c68>] (free_netdev+0x108/0x188 net/core/dev.c:10993) [<813a4b60>] (free_netdev) from [<80d113a8>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:853d2f74 r5:853d2e60 r4:00000000 [<80d112fc>] (usbnet_disconnect) from [<80d6c320>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:85d84830 r6:82775a30 r5:00000000 r4:85d84800 [<80d6c29c>] (usb_unbind_interface) from [<80a49e04>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6c29c>] (usb_unbind_interface) from [<80a49e04>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:85d84480 r9:828eccc4 r8:00000044 r7:85d84874 r6:82775a30 r5:00000000 r4:85d84830 [<80a49da0>] (device_remove) from [<80a4b31c>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a49da0>] (device_remove) from [<80a4b31c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:85d84830 [<80a4b190>] (device_release_driver_internal) from [<80a4b3a8>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eccc4 r8:82f45940 r7:82f45938 r6:82f4590c r5:85d84830 r4:82f45930 [<80a4b390>] (device_release_driver) from [<80a494a8>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a493dc>] (bus_remove_device) from [<80a4352c>] (device_del+0x15c/0x3bc drivers/base/core.c:3894) r9:828eccc4 r8:85d84800 r7:83681800 r6:85da23c8 r5:04208060 r4:85d84830 [<80a433d0>] (device_del) from [<80d69d7c>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:85d84800 r7:85d84400 r6:85da23c8 r5:00000001 r4:00000038 [<80d69ca0>] (usb_disable_device) from [<80d5ebe8>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2296) r10:00000001 r9:841e4a00 r8:85d844c4 r7:83b41400 r6:85d84480 r5:85d84400 r4:60000113 [<80d5eafc>] (usb_disconnect) from [<80d61898>] (hub_port_connect drivers/usb/core/hub.c:5352 [inline]) [<80d5eafc>] (usb_disconnect) from [<80d61898>] (hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]) [<80d5eafc>] (usb_disconnect) from [<80d61898>] (port_event drivers/usb/core/hub.c:5812 [inline]) [<80d5eafc>] (usb_disconnect) from [<80d61898>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5894) r10:00000001 r9:00000100 r8:83c50700 r7:85d84400 r6:8388d800 r5:83b41610 r4:00000001 [<80d60a20>] (hub_event) from [<8026660c>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82e64805 r9:83681800 r8:00000180 r7:ddde40c0 r6:82e64800 r5:83c50700 r4:84d77300 [<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) r10:83681800 r9:84d7732c r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:84d77300 [<80267144>] (worker_thread) from [<80270044>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:dfee1e90 r8:85329b80 r7:84d77300 r6:80267144 r5:83681800 r4:85361e80 [<8026ff40>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfee5fb0 to 0xdfee5ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026ff40 r4:85361e80 Rebooting in 86400 seconds..