usb 1-1: USB disconnect, device number 13
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: 2847 at lib/debugobjects.c:515 debug_print_object+0xc4/0xd8 lib/debugobjects.c:515
ODEBUG: free active (active state 0) object: 855177cc 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 UID: 0 PID: 2847 Comm: kworker/1:3 Not tainted 6.10.0-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: usb_hub_wq hub_event
Call trace: 
[<818ef10c>] (dump_backtrace) from [<818ef208>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622804 r5:00000000 r4:81feb1a4
[<818ef1f0>] (show_stack) from [<8190c848>] (__dump_stack lib/dump_stack.c:93 [inline])
[<818ef1f0>] (show_stack) from [<8190c848>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119)
[<8190c7f4>] (dump_stack_lvl) from [<8190c888>] (dump_stack+0x18/0x1c lib/dump_stack.c:128)
 r5:00000000 r4:82863d0c
[<8190c870>] (dump_stack) from [<818efcb0>] (panic+0x120/0x358 kernel/panic.c:348)
[<818efb90>] (panic) from [<80241f4c>] (check_panic_on_warn kernel/panic.c:241 [inline])
[<818efb90>] (panic) from [<80241f4c>] (get_taint+0x0/0x1c kernel/panic.c:236)
 r3:8260c5c4 r2:00000001 r1:81fd3dfc r0:81fdb810
 r7:8082680c
[<80241ed8>] (check_panic_on_warn) from [<802420a0>] (__warn+0x7c/0x180 kernel/panic.c:735)
[<80242024>] (__warn) from [<8024238c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:768)
 r8:00000009 r7:8203b254 r6:ea755a8c r5:834b6000 r4:00000000
[<802421a8>] (warn_slowpath_fmt) from [<8082680c>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:515)
 r10:00000005 r9:85517000 r8:81a01bc0 r7:82064d04 r6:828c7694 r5:ea755b34
 r4:8260cda4
[<80826748>] (debug_print_object) from [<808280ac>] (__debug_check_no_obj_freed lib/debugobjects.c:990 [inline])
[<80826748>] (debug_print_object) from [<808280ac>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1020)
 r8:85517800 r7:855177cc r6:00000100 r5:00000003 r4:00000000
[<80827e58>] (debug_check_no_obj_freed) from [<804bc67c>] (slab_free_hook mm/slub.c:2219 [inline])
[<80827e58>] (debug_check_no_obj_freed) from [<804bc67c>] (slab_free mm/slub.c:4473 [inline])
[<80827e58>] (debug_check_no_obj_freed) from [<804bc67c>] (kfree+0x198/0x338 mm/slub.c:4594)
 r10:82777cc0 r9:85343080 r8:85517000 r7:80461678 r6:82c023c0 r5:ddeb8640
 r4:85517000
[<804bc4e4>] (kfree) from [<80461678>] (kvfree+0x2c/0x30 mm/util.c:696)
 r10:82777cc0 r9:85343080 r8:85517000 r7:00000000 r6:841f7e00 r5:84a0a280
 r4:85517000
[<8046164c>] (kvfree) from [<814586ac>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031)
 r5:84a0a280 r4:85517000
[<81458680>] (netdev_release) from [<80a63c34>] (device_release+0x38/0xa8 drivers/base/core.c:2581)
 r5:84a0a280 r4:855173c0
[<80a63bfc>] (device_release) from [<818c8f90>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80a63bfc>] (device_release) from [<818c8f90>] (kobject_release lib/kobject.c:720 [inline])
[<80a63bfc>] (device_release) from [<818c8f90>] (kref_put include/linux/kref.h:65 [inline])
[<80a63bfc>] (device_release) from [<818c8f90>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737)
 r5:81b49224 r4:855173c0
[<818c8ec8>] (kobject_put) from [<80a63e60>] (put_device+0x18/0x1c drivers/base/core.c:3787)
 r7:85340000 r6:8551710c r5:85517000 r4:00000000
[<80a63e48>] (put_device) from [<8140d694>] (free_netdev+0x114/0x18c net/core/dev.c:11196)
[<8140d580>] (free_netdev) from [<80d3af58>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636)
 r6:85517794 r5:85517680 r4:00000000
[<80d3aeac>] (usbnet_disconnect) from [<80d9f6f8>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461)
 r8:00000044 r7:85340030 r6:82777cc0 r5:00000000 r4:85340000
[<80d9f674>] (usb_unbind_interface) from [<80a6bd3c>] (device_remove drivers/base/dd.c:568 [inline])
[<80d9f674>] (usb_unbind_interface) from [<80a6bd3c>] (device_remove+0x64/0x6c drivers/base/dd.c:560)
 r10:00000000 r9:85343080 r8:00000044 r7:85340074 r6:82777cc0 r5:00000000
 r4:85340030
[<80a6bcd8>] (device_remove) from [<80a6d254>] (__device_release_driver drivers/base/dd.c:1270 [inline])
[<80a6bcd8>] (device_remove) from [<80a6d254>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293)
 r5:00000000 r4:85340030
[<80a6d0c8>] (device_release_driver_internal) from [<80a6d2e0>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316)
 r9:85343080 r8:82f58d40 r7:82f58d38 r6:82f58d0c r5:85340030 r4:82f58d30
[<80a6d2c8>] (device_release_driver) from [<80a6b3c4>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574)
[<80a6b2f8>] (bus_remove_device) from [<80a654dc>] (device_del+0x148/0x38c drivers/base/core.c:3868)
 r9:85343080 r8:834b6000 r7:04208060 r6:00000000 r5:85340030 r4:85340074
[<80a65394>] (device_del) from [<80d9d114>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418)
 r10:00000000 r9:00000000 r8:85340000 r7:85343000 r6:85057a08 r5:00000001
 r4:00000038
[<80d9d038>] (usb_disable_device) from [<80d91f74>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304)
 r10:00000001 r9:84576a00 r8:853430c4 r7:83d6e800 r6:85343080 r5:85343000
 r4:60000013
[<80d91e88>] (usb_disconnect) from [<80d94c24>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline])
[<80d91e88>] (usb_disconnect) from [<80d94c24>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline])
[<80d91e88>] (usb_disconnect) from [<80d94c24>] (port_event drivers/usb/core/hub.c:5821 [inline])
[<80d91e88>] (usb_disconnect) from [<80d94c24>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903)
 r10:00000001 r9:00000100 r8:8384db00 r7:85343000 r6:83d6e000 r5:83d6ea10
 r4:00000001
[<80d93dac>] (hub_event) from [<8026594c>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231)
 r10:82e6ca05 r9:834b6000 r8:01800000 r7:ddde4000 r6:82e6ca00 r5:8384db00
 r4:85435700
[<80265798>] (process_one_work) from [<80266530>] (process_scheduled_works kernel/workqueue.c:3312 [inline])
[<80265798>] (process_one_work) from [<80266530>] (worker_thread+0x1ec/0x3f4 kernel/workqueue.c:3390)
 r10:834b6000 r9:8543572c r8:61c88647 r7:ddde4020 r6:82604d40 r5:ddde4000
 r4:85435700
[<80266344>] (worker_thread) from [<8026f588>] (kthread+0x104/0x134 kernel/kthread.c:389)
 r10:00000000 r9:df87de78 r8:845ca240 r7:85435700 r6:80266344 r5:834b6000
 r4:82c9fdc0
[<8026f484>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:134)
Exception stack(0xea755fb0 to 0xea755ff8)
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 r5:8026f484 r4:82c9fdc0
Rebooting in 86400 seconds..