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 5 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: 4032 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 853adfac 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: 4032 Comm: kworker/0:18 Not tainted 6.10.0-rc7-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818d52d8>] (dump_backtrace) from [<818d53d4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622d44 r5:00000000 r4:81fe1584 [<818d53bc>] (show_stack) from [<818f2a3c>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818d53bc>] (show_stack) from [<818f2a3c>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818f29e8>] (dump_stack_lvl) from [<818f2a7c>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285fd18 [<818f2a64>] (dump_stack) from [<818d5e7c>] (panic+0x120/0x358 kernel/panic.c:347) [<818d5d5c>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818d5d5c>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fca1f0 r0:81fd1e48 r7:808275dc [<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 r7:8202fdf0 r6:e0825a7c r5:8414bc00 r4:00000000 [<802440c8>] (warn_slowpath_fmt) from [<808275dc>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:853ad800 r8:81a02b44 r7:82058ef0 r6:828c3454 r5:e0825b24 r4:8260cda8 [<80827518>] (debug_print_object) from [<80828e7c>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<80827518>] (debug_print_object) from [<80828e7c>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:853ae000 r7:853adfac r6:00000100 r5:00000003 r4:00000000 [<80828c28>] (debug_check_no_obj_freed) from [<804bb230>] (slab_free_hook mm/slub.c:2163 [inline]) [<80828c28>] (debug_check_no_obj_freed) from [<804bb230>] (slab_free mm/slub.c:4438 [inline]) [<80828c28>] (debug_check_no_obj_freed) from [<804bb230>] (kfree+0x1a0/0x340 mm/slub.c:4559) r10:82778808 r9:84e2f880 r8:853ad800 r7:80461368 r6:82c023c0 r5:ddeb53a0 r4:853ad800 [<804bb090>] (kfree) from [<80461368>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82778808 r9:84e2f880 r8:853ad800 r7:00000000 r6:850e1d00 r5:84dba800 r4:853ad800 [<8046133c>] (kvfree) from [<8140ab8c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10903) r5:84dba800 r4:853ad800 [<8140ab70>] (netdev_freemem) from [<81446568>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<8144653c>] (netdev_release) from [<80a604bc>] (device_release+0x38/0xa8 drivers/base/core.c:2581) r5:84dba800 r4:853adbb8 [<80a60484>] (device_release) from [<818af154>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a60484>] (device_release) from [<818af154>] (kobject_release lib/kobject.c:720 [inline]) [<80a60484>] (device_release) from [<818af154>] (kref_put include/linux/kref.h:65 [inline]) [<80a60484>] (device_release) from [<818af154>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b497dc r4:853adbb8 [<818af08c>] (kobject_put) from [<80a606e8>] (put_device+0x18/0x1c drivers/base/core.c:3787) r7:84e2f400 r6:853ad90c r5:853ad800 r4:00000000 [<80a606d0>] (put_device) from [<813fbd20>] (free_netdev+0x10c/0x18c net/core/dev.c:11100) [<813fbc14>] (free_netdev) from [<80d34790>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:853adf74 r5:853ade60 r4:00000000 [<80d346e4>] (usbnet_disconnect) from [<80d93870>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:84e2f430 r6:82778808 r5:00000000 r4:84e2f400 [<80d937ec>] (usb_unbind_interface) from [<80a685c4>] (device_remove drivers/base/dd.c:568 [inline]) [<80d937ec>] (usb_unbind_interface) from [<80a685c4>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:84e2f880 r8:00000044 r7:84e2f474 r6:82778808 r5:00000000 r4:84e2f430 [<80a68560>] (device_remove) from [<80a69adc>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a68560>] (device_remove) from [<80a69adc>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:84e2f430 [<80a69950>] (device_release_driver_internal) from [<80a69b68>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:84e2f880 r8:82fb4140 r7:82fb4138 r6:82fb410c r5:84e2f430 r4:82fb4130 [<80a69b50>] (device_release_driver) from [<80a67c4c>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a67b80>] (bus_remove_device) from [<80a61d64>] (device_del+0x148/0x38c drivers/base/core.c:3868) r9:84e2f880 r8:8414bc00 r7:04208060 r6:00000000 r5:84e2f430 r4:84e2f474 [<80a61c1c>] (device_del) from [<80d912c8>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:84e2f400 r7:84e2f800 r6:84f68cc8 r5:00000001 r4:00000038 [<80d911ec>] (usb_disable_device) from [<80d86128>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:8530c000 r8:84e2f8c4 r7:83d75c00 r6:84e2f880 r5:84e2f800 r4:60000013 [<80d8603c>] (usb_disconnect) from [<80d88dd8>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d8603c>] (usb_disconnect) from [<80d88dd8>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d8603c>] (usb_disconnect) from [<80d88dd8>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d8603c>] (usb_disconnect) from [<80d88dd8>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83e3e300 r7:84e2f800 r6:83d75400 r5:83d75e10 r4:00000001 [<80d87f60>] (hub_event) from [<80267258>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3248) r10:82f19805 r9:8414bc00 r8:00800000 r7:dddd00c0 r6:82f19800 r5:83e3e300 r4:85410780 [<802670a4>] (process_one_work) from [<80267e80>] (process_scheduled_works kernel/workqueue.c:3329 [inline]) [<802670a4>] (process_one_work) from [<80267e80>] (worker_thread+0x1ec/0x404 kernel/workqueue.c:3409) r10:8414bc00 r9:854107ac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:85410780 [<80267c94>] (worker_thread) from [<802712c0>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:dfa5de78 r8:8526cbc0 r7:85410780 r6:80267c94 r5:8414bc00 r4:851ded80 [<802711bc>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:134) Exception stack(0xe0825fb0 to 0xe0825ff8) 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 r5:802711bc r4:851ded80 Rebooting in 86400 seconds..