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 2 cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.1-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 23 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 850e17ac 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: 23 Comm: kworker/1:0 Not tainted 6.9.0-rc2-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<8187a55c>] (dump_backtrace) from [<8187a658>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fc4918 [<8187a640>] (show_stack) from [<81897df8>] (__dump_stack lib/dump_stack.c:88 [inline]) [<8187a640>] (show_stack) from [<81897df8>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<81897da4>] (dump_stack_lvl) from [<81897e38>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82858d18 [<81897e20>] (dump_stack) from [<8187b100>] (panic+0x120/0x358 kernel/panic.c:348) [<8187afe0>] (panic) from [<8024390c>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<8187afe0>] (panic) from [<8024390c>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fad59c r0:81fb5144 r7:8080bbb0 [<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 r7:8201153c r6:df879a7c r5:82e3a400 r4:00000000 [<80243c08>] (warn_slowpath_fmt) from [<8080bbb0>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:850e1000 r8:81a02b44 r7:82039490 r6:828bc414 r5:df879b24 r4:8260ce18 [<8080baec>] (debug_print_object) from [<8080d448>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080baec>] (debug_print_object) from [<8080d448>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:850e1800 r7:850e17ac r6:00000100 r5:00000003 r4:00000000 [<8080d1f4>] (debug_check_no_obj_freed) from [<804b27b0>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080d1f4>] (debug_check_no_obj_freed) from [<804b27b0>] (slab_free mm/slub.c:4280 [inline]) [<8080d1f4>] (debug_check_no_obj_freed) from [<804b27b0>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a08 r9:847a9880 r8:850e1000 r7:8045a948 r6:82c023c0 r5:ddeaef80 r4:850e1000 [<804b2610>] (kfree) from [<8045a948>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a08 r9:847a9880 r8:850e1000 r7:00000000 r6:85062840 r5:8506c680 r4:850e1000 [<8045a91c>] (kvfree) from [<813b47bc>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797) r5:8506c680 r4:850e1000 [<813b47a0>] (netdev_freemem) from [<813ef824>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<813ef7f8>] (netdev_release) from [<80a41f18>] (device_release+0x38/0xa8 drivers/base/core.c:2565) r5:8506c680 r4:850e13b8 [<80a41ee0>] (device_release) from [<818544c0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a41ee0>] (device_release) from [<818544c0>] (kobject_release lib/kobject.c:720 [inline]) [<80a41ee0>] (device_release) from [<818544c0>] (kref_put include/linux/kref.h:65 [inline]) [<80a41ee0>] (device_release) from [<818544c0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b485c4 r4:850e13b8 [<818543f8>] (kobject_put) from [<80a421a0>] (put_device+0x18/0x1c drivers/base/core.c:3813) r7:847a9000 r6:850e110c r5:850e1000 r4:00000000 [<80a42188>] (put_device) from [<813a5b08>] (free_netdev+0x108/0x188 net/core/dev.c:10993) [<813a5a00>] (free_netdev) from [<80d119b0>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:850e1774 r5:850e1660 r4:00000000 [<80d11904>] (usbnet_disconnect) from [<80d6c9ec>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:847a9030 r6:82775a08 r5:00000000 r4:847a9000 [<80d6c968>] (usb_unbind_interface) from [<80a49ff4>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6c968>] (usb_unbind_interface) from [<80a49ff4>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:847a9880 r9:828eccc4 r8:00000044 r7:847a9074 r6:82775a08 r5:00000000 r4:847a9030 [<80a49f90>] (device_remove) from [<80a4b50c>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a49f90>] (device_remove) from [<80a4b50c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:847a9030 [<80a4b380>] (device_release_driver_internal) from [<80a4b598>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eccc4 r8:82eaeb40 r7:82eaeb38 r6:82eaeb0c r5:847a9030 r4:82eaeb30 [<80a4b580>] (device_release_driver) from [<80a49698>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a495cc>] (bus_remove_device) from [<80a4371c>] (device_del+0x15c/0x3bc drivers/base/core.c:3894) r9:828eccc4 r8:847a9000 r7:82e3a400 r6:850a85c8 r5:04208060 r4:847a9030 [<80a435c0>] (device_del) from [<80d6a448>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:847a9000 r7:847a9800 r6:850a85c8 r5:00000001 r4:00000038 [<80d6a36c>] (usb_disable_device) from [<80d5f2b4>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:84ce1c00 r8:847a98c4 r7:83f3b400 r6:847a9880 r5:847a9800 r4:60000013 [<80d5f1c8>] (usb_disconnect) from [<80d61f64>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d5f1c8>] (usb_disconnect) from [<80d61f64>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d5f1c8>] (usb_disconnect) from [<80d61f64>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d5f1c8>] (usb_disconnect) from [<80d61f64>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83b04b00 r7:847a9800 r6:83f3ac00 r5:83f3b610 r4:00000001 [<80d610ec>] (hub_event) from [<8026660c>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82fc9605 r9:82e3a400 r8:00000180 r7:ddde40c0 r6:82fc9600 r5:83b04b00 r4:82cae100 [<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) r10:82e3a400 r9:82cae12c r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:82cae100 [<80267144>] (worker_thread) from [<80270044>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df819d60 r8:82cbfc40 r7:82cae100 r6:80267144 r5:82e3a400 r4:82cbfa00 [<8026ff40>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf879fb0 to 0xdf879ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026ff40 r4:82cbfa00 Rebooting in 86400 seconds..