------------[ cut here ]------------
WARNING: CPU: 1 PID: 4638 at lib/debugobjects.c:515 debug_print_object+0xc4/0xd8 lib/debugobjects.c:515
ODEBUG: free active (active state 0) object: 84f9afcc 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: 4638 Comm: kworker/1:11 Not tainted 6.11.0-rc1-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: usb_hub_wq hub_event
Call trace: 
[<819532c8>] (dump_backtrace) from [<819533c4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:826228c4 r5:00000000 r4:8200ba14
[<819533ac>] (show_stack) from [<81971074>] (__dump_stack lib/dump_stack.c:93 [inline])
[<819533ac>] (show_stack) from [<81971074>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119)
[<81971020>] (dump_stack_lvl) from [<819710b4>] (dump_stack+0x18/0x1c lib/dump_stack.c:128)
 r5:00000000 r4:8286bd18
[<8197109c>] (dump_stack) from [<81953e6c>] (panic+0x120/0x358 kernel/panic.c:348)
[<81953d4c>] (panic) from [<802421dc>] (check_panic_on_warn kernel/panic.c:241 [inline])
[<81953d4c>] (panic) from [<802421dc>] (get_taint+0x0/0x1c kernel/panic.c:236)
 r3:8260c5c4 r2:00000001 r1:81ff4238 r0:81ffc010
 r7:8082588c
[<80242168>] (check_panic_on_warn) from [<80242330>] (__warn+0x7c/0x180 kernel/panic.c:735)
[<802422b4>] (__warn) from [<8024261c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:768)
 r8:00000009 r7:8205aee4 r6:dfdd9a8c r5:8362d400 r4:00000000
[<80242438>] (warn_slowpath_fmt) from [<8082588c>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:515)
 r10:00000005 r9:84f9a800 r8:81a01c24 r7:820854b0 r6:828cf69c r5:dfdd9b34
 r4:8260cda4
[<808257c8>] (debug_print_object) from [<8082712c>] (__debug_check_no_obj_freed lib/debugobjects.c:990 [inline])
[<808257c8>] (debug_print_object) from [<8082712c>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1020)
 r8:84f9b000 r7:84f9afcc r6:00000100 r5:00000003 r4:00000000
[<80826ed8>] (debug_check_no_obj_freed) from [<804bc4bc>] (slab_free_hook mm/slub.c:2219 [inline])
[<80826ed8>] (debug_check_no_obj_freed) from [<804bc4bc>] (slab_free mm/slub.c:4473 [inline])
[<80826ed8>] (debug_check_no_obj_freed) from [<804bc4bc>] (kfree+0x198/0x338 mm/slub.c:4594)
 r10:82778724 r9:84ea5c80 r8:84f9a800 r7:80461518 r6:82c023c0 r5:ddeac160
 r4:84f9a800
[<804bc324>] (kfree) from [<80461518>] (kvfree+0x2c/0x30 mm/util.c:696)
 r10:82778724 r9:84ea5c80 r8:84f9a800 r7:00000000 r6:84c9c680 r5:85055f80
 r4:84f9a800
[<804614ec>] (kvfree) from [<814bc6e4>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031)
 r5:85055f80 r4:84f9a800
[<814bc6b8>] (netdev_release) from [<80a6c558>] (device_release+0x38/0xa8 drivers/base/core.c:2581)
 r5:85055f80 r4:84f9abc0
[<80a6c520>] (device_release) from [<8192d150>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80a6c520>] (device_release) from [<8192d150>] (kobject_release lib/kobject.c:720 [inline])
[<80a6c520>] (device_release) from [<8192d150>] (kref_put include/linux/kref.h:65 [inline])
[<80a6c520>] (device_release) from [<8192d150>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737)
 r5:81b4b6cc r4:84f9abc0
[<8192d088>] (kobject_put) from [<80a6c784>] (put_device+0x18/0x1c drivers/base/core.c:3787)
 r7:84ea5800 r6:84f9a90c r5:84f9a800 r4:00000000
[<80a6c76c>] (put_device) from [<81471674>] (free_netdev+0x114/0x18c net/core/dev.c:11196)
[<81471560>] (free_netdev) from [<80d4e0b8>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636)
 r6:84f9af94 r5:84f9ae80 r4:00000000
[<80d4e00c>] (usbnet_disconnect) from [<80db5dc0>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461)
 r8:00000044 r7:84ea5830 r6:82778724 r5:00000000 r4:84ea5800
[<80db5d3c>] (usb_unbind_interface) from [<80a7466c>] (device_remove drivers/base/dd.c:568 [inline])
[<80db5d3c>] (usb_unbind_interface) from [<80a7466c>] (device_remove+0x64/0x6c drivers/base/dd.c:560)
 r10:00000000 r9:84ea5c80 r8:00000044 r7:84ea5874 r6:82778724 r5:00000000
 r4:84ea5830
[<80a74608>] (device_remove) from [<80a75b84>] (__device_release_driver drivers/base/dd.c:1272 [inline])
[<80a74608>] (device_remove) from [<80a75b84>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295)
 r5:00000000 r4:84ea5830
[<80a759f8>] (device_release_driver_internal) from [<80a75c10>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318)
 r9:84ea5c80 r8:82fb7140 r7:82fb7138 r6:82fb710c r5:84ea5830 r4:82fb7130
[<80a75bf8>] (device_release_driver) from [<80a73cf0>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574)
[<80a73c24>] (bus_remove_device) from [<80a6de08>] (device_del+0x148/0x38c drivers/base/core.c:3868)
 r9:84ea5c80 r8:8362d400 r7:04208060 r6:00000000 r5:84ea5830 r4:84ea5874
[<80a6dcc0>] (device_del) from [<80db37dc>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418)
 r10:00000000 r9:00000000 r8:84ea5800 r7:84ea5c00 r6:84666048 r5:00000001
 r4:00000038
[<80db3700>] (usb_disable_device) from [<80da863c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304)
 r10:00000001 r9:84612c00 r8:84ea5cc4 r7:83b0c800 r6:84ea5c80 r5:84ea5c00
 r4:60000113
[<80da8550>] (usb_disconnect) from [<80dab2ec>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline])
[<80da8550>] (usb_disconnect) from [<80dab2ec>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline])
[<80da8550>] (usb_disconnect) from [<80dab2ec>] (port_event drivers/usb/core/hub.c:5821 [inline])
[<80da8550>] (usb_disconnect) from [<80dab2ec>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903)
 r10:00000001 r9:00000100 r8:83d8fd00 r7:84ea5c00 r6:83b0c000 r5:83b0ca10
 r4:00000001
[<80daa474>] (hub_event) from [<80265f1c>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231)
 r10:82f1da05 r9:8362d400 r8:01800000 r7:ddde4000 r6:82f1da00 r5:83d8fd00
 r4:85055800
[<80265d68>] (process_one_work) from [<80266b00>] (process_scheduled_works kernel/workqueue.c:3312 [inline])
[<80265d68>] (process_one_work) from [<80266b00>] (worker_thread+0x1ec/0x3f4 kernel/workqueue.c:3390)
 r10:8362d400 r9:8505582c r8:61c88647 r7:ddde4020 r6:82604d40 r5:ddde4000
 r4:85055800
[<80266914>] (worker_thread) from [<8026fb58>] (kthread+0x104/0x134 kernel/kthread.c:389)
 r10:00000000 r9:dfe19e78 r8:84fc64c0 r7:85055800 r6:80266914 r5:8362d400
 r4:850477c0
[<8026fa54>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdfdd9fb0 to 0xdfdd9ff8)
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 r5:8026fa54 r4:850477c0
Rebooting in 86400 seconds..