usb 2-1: USB disconnect, device number 67 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: 9718 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 8476b7ac 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: 9718 Comm: kworker/0:1 Not tainted 6.9.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<81878e9c>] (dump_backtrace) from [<81878f98>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fc4710 [<81878f80>] (show_stack) from [<81896734>] (__dump_stack lib/dump_stack.c:88 [inline]) [<81878f80>] (show_stack) from [<81896734>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818966e0>] (dump_stack_lvl) from [<81896774>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82858d18 [<8189675c>] (dump_stack) from [<81879a40>] (panic+0x120/0x358 kernel/panic.c:348) [<81879920>] (panic) from [<8024390c>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<81879920>] (panic) from [<8024390c>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fad394 r0:81fb4f3c r7:8080b848 [<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 r7:820112e0 r6:dfdf5a7c r5:85ad1800 r4:00000000 [<80243c08>] (warn_slowpath_fmt) from [<8080b848>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:8476b000 r8:81a02b44 r7:820391e8 r6:828bc414 r5:dfdf5b24 r4:8260ce18 [<8080b784>] (debug_print_object) from [<8080d0e0>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080b784>] (debug_print_object) from [<8080d0e0>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:8476b800 r7:8476b7ac r6:00000100 r5:00000003 r4:00000000 [<8080ce8c>] (debug_check_no_obj_freed) from [<804b2648>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080ce8c>] (debug_check_no_obj_freed) from [<804b2648>] (slab_free mm/slub.c:4280 [inline]) [<8080ce8c>] (debug_check_no_obj_freed) from [<804b2648>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a30 r9:850c5480 r8:8476b000 r7:8045a7a4 r6:82c023c0 r5:dde99aa0 r4:8476b000 [<804b24a8>] (kfree) from [<8045a7a4>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a30 r9:850c5480 r8:8476b000 r7:00000000 r6:8500fd80 r5:852d1900 r4:8476b000 [<8045a778>] (kvfree) from [<813b36c4>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797) r5:852d1900 r4:8476b000 [<813b36a8>] (netdev_freemem) from [<813ee724>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<813ee6f8>] (netdev_release) from [<80a41a68>] (device_release+0x38/0xa8 drivers/base/core.c:2565) r5:852d1900 r4:8476b3b8 [<80a41a30>] (device_release) from [<81852e00>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a41a30>] (device_release) from [<81852e00>] (kobject_release lib/kobject.c:720 [inline]) [<80a41a30>] (device_release) from [<81852e00>] (kref_put include/linux/kref.h:65 [inline]) [<80a41a30>] (device_release) from [<81852e00>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b485c4 r4:8476b3b8 [<81852d38>] (kobject_put) from [<80a41cf0>] (put_device+0x18/0x1c drivers/base/core.c:3813) r7:850c6000 r6:8476b10c r5:8476b000 r4:00000000 [<80a41cd8>] (put_device) from [<813a4a10>] (free_netdev+0x108/0x188 net/core/dev.c:10993) [<813a4908>] (free_netdev) from [<80d110e8>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:8476b774 r5:8476b660 r4:00000000 [<80d1103c>] (usbnet_disconnect) from [<80d6c060>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:850c6030 r6:82775a30 r5:00000000 r4:850c6000 [<80d6bfdc>] (usb_unbind_interface) from [<80a49b44>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6bfdc>] (usb_unbind_interface) from [<80a49b44>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:850c5480 r9:828eccc4 r8:00000044 r7:850c6074 r6:82775a30 r5:00000000 r4:850c6030 [<80a49ae0>] (device_remove) from [<80a4b05c>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a49ae0>] (device_remove) from [<80a4b05c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:850c6030 [<80a4aed0>] (device_release_driver_internal) from [<80a4b0e8>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eccc4 r8:82eced40 r7:82eced38 r6:82eced0c r5:850c6030 r4:82eced30 [<80a4b0d0>] (device_release_driver) from [<80a491e8>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a4911c>] (bus_remove_device) from [<80a4326c>] (device_del+0x15c/0x3bc drivers/base/core.c:3894) r9:828eccc4 r8:850c6000 r7:85ad1800 r6:85a5c748 r5:04208060 r4:850c6030 [<80a43110>] (device_del) from [<80d69abc>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:850c6000 r7:850c5400 r6:85a5c748 r5:00000001 r4:00000038 [<80d699e0>] (usb_disable_device) from [<80d5e928>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2296) r10:00000001 r9:83fd8200 r8:850c54c4 r7:83680800 r6:850c5480 r5:850c5400 r4:60000013 [<80d5e83c>] (usb_disconnect) from [<80d615d8>] (hub_port_connect drivers/usb/core/hub.c:5352 [inline]) [<80d5e83c>] (usb_disconnect) from [<80d615d8>] (hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]) [<80d5e83c>] (usb_disconnect) from [<80d615d8>] (port_event drivers/usb/core/hub.c:5812 [inline]) [<80d5e83c>] (usb_disconnect) from [<80d615d8>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5894) r10:00000001 r9:00000100 r8:837ac300 r7:850c5400 r6:83680000 r5:83680a10 r4:00000001 [<80d60760>] (hub_event) from [<802665fc>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82fce205 r9:85ad1800 r8:00000080 r7:dddcff00 r6:82fce200 r5:837ac300 r4:84d36680 [<80266444>] (process_one_work) from [<80267320>] (process_scheduled_works kernel/workqueue.c:3335 [inline]) [<80266444>] (process_one_work) from [<80267320>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3416) r10:85ad1800 r9:84d366ac r8:61c88647 r7:dddcff20 r6:82604d40 r5:dddcff00 r4:84d36680 [<80267134>] (worker_thread) from [<80270034>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:dfcc1e90 r8:84fa8f80 r7:84d36680 r6:80267134 r5:85ad1800 r4:84d1fd80 [<8026ff30>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfdf5fb0 to 0xdfdf5ff8) 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 r5:8026ff30 r4:84d1fd80 Rebooting in 86400 seconds..