usb 2-1: USB disconnect, device number 7
cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.1-1, CDC NCM (NO ZLP)
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WARNING: CPU: 0 PID: 13782 at lib/debugobjects.c:612 debug_print_object+0xc4/0xd8 lib/debugobjects.c:612
ODEBUG: free active (active state 0) object: 84f4d80c object type: work_struct hint: usbnet_deferred_kevent+0x0/0x394 drivers/net/usb/usbnet.c:644
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 UID: 0 PID: 13782 Comm: kworker/0:1 Not tainted 6.16.0-rc1-syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Workqueue: usb_hub_wq hub_event
Call trace: 
[<80201a00>] (dump_backtrace) from [<80201afc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:828208bc r5:00000000 r4:8225e950
[<80201ae4>] (show_stack) from [<8021fda8>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201ae4>] (show_stack) from [<8021fda8>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<8021fd54>] (dump_stack_lvl) from [<8021fde8>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82a6fd18
[<8021fdd0>] (dump_stack) from [<80202614>] (panic+0x120/0x374 kernel/panic.c:382)
[<802024f4>] (panic) from [<802585b8>] (check_panic_on_warn kernel/panic.c:273 [inline])
[<802024f4>] (panic) from [<802585b8>] (get_taint+0x0/0x1c kernel/panic.c:268)
 r3:8280c684 r2:00000001 r1:82245488 r0:8224ce38
 r7:808d05e4
[<80258544>] (check_panic_on_warn) from [<8025871c>] (__warn+0x80/0x188 kernel/panic.c:777)
[<8025869c>] (__warn) from [<80258a0c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:812)
 r8:00000009 r7:822b6e10 r6:df9f5a84 r5:8421e000 r4:00000000
[<80258828>] (warn_slowpath_fmt) from [<808d05e4>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:612)
 r10:00000005 r9:84f4d000 r8:81c01f18 r7:822e1ce0 r6:82adbee4 r5:df9f5b2c
 r4:8280ccbc
[<808d0520>] (debug_print_object) from [<808d2030>] (__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline])
[<808d0520>] (debug_print_object) from [<808d2030>] (debug_check_no_obj_freed+0x25c/0x2a4 lib/debugobjects.c:1129)
 r8:84f4e000 r7:84f4d80c r6:00000100 r5:00000003 r4:00000000
[<808d1dd4>] (debug_check_no_obj_freed) from [<80503b28>] (slab_free_hook mm/slub.c:2312 [inline])
[<808d1dd4>] (debug_check_no_obj_freed) from [<80503b28>] (slab_free mm/slub.c:4643 [inline])
[<808d1dd4>] (debug_check_no_obj_freed) from [<80503b28>] (kfree+0x190/0x394 mm/slub.c:4842)
 r10:00000001 r9:8297facc r8:84f4d000 r7:805049cc r6:83002480 r5:ddeab620
 r4:84f4d000
[<80503998>] (kfree) from [<805049cc>] (kvfree+0x2c/0x30 mm/slub.c:5058)
 r10:00000001 r9:8297facc r8:84f4d000 r7:00000000 r6:8571f400 r5:8560f800
 r4:84f4d000
[<805049a0>] (kvfree) from [<815a0bb0>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2231)
 r5:8560f800 r4:84f4d000
[<815a0b84>] (netdev_release) from [<80b2bffc>] (device_release+0x38/0xa8 drivers/base/core.c:2568)
 r5:8560f800 r4:84f4d3c0
[<80b2bfc4>] (device_release) from [<81a35d70>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80b2bfc4>] (device_release) from [<81a35d70>] (kobject_release lib/kobject.c:720 [inline])
[<80b2bfc4>] (device_release) from [<81a35d70>] (kref_put include/linux/kref.h:65 [inline])
[<80b2bfc4>] (device_release) from [<81a35d70>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737)
 r5:81d4ecfc r4:84f4d3c0
[<81a35cd0>] (kobject_put) from [<80b2c228>] (put_device+0x18/0x1c drivers/base/core.c:3800)
 r7:000000c0 r6:00000000 r5:00000000 r4:84f4d000
[<80b2c210>] (put_device) from [<81551f4c>] (free_netdev+0x18c/0x244 net/core/dev.c:11900)
[<81551dc0>] (free_netdev) from [<80e1ede4>] (usbnet_disconnect+0xb8/0xfc drivers/net/usb/usbnet.c:1663)
 r7:85492400 r6:84f4d7d4 r5:84f4d6c0 r4:00000000
[<80e1ed2c>] (usbnet_disconnect) from [<80e8875c>] (usb_unbind_interface+0x84/0x2b4 drivers/usb/core/driver.c:458)
 r8:85491488 r7:85492474 r6:85492430 r5:00000000 r4:85491400
[<80e886d8>] (usb_unbind_interface) from [<80b342b0>] (device_remove drivers/base/dd.c:569 [inline])
[<80e886d8>] (usb_unbind_interface) from [<80b342b0>] (device_remove+0x64/0x6c drivers/base/dd.c:561)
 r10:00000001 r9:85491488 r8:00000044 r7:85492474 r6:8297facc r5:00000000
 r4:85492430
[<80b3424c>] (device_remove) from [<80b357a0>] (__device_release_driver drivers/base/dd.c:1272 [inline])
[<80b3424c>] (device_remove) from [<80b357a0>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295)
 r5:00000000 r4:85492430
[<80b35614>] (device_release_driver_internal) from [<80b3582c>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318)
 r9:85491488 r8:832d6d40 r7:832d6d38 r6:832d6d0c r5:85492430 r4:832d6d30
[<80b35814>] (device_release_driver) from [<80b33904>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:579)
[<80b33838>] (bus_remove_device) from [<80b2dc60>] (device_del+0x148/0x38c drivers/base/core.c:3881)
 r9:85491488 r8:8421e000 r7:04208060 r6:00000000 r5:85492430 r4:85492474
[<80b2db18>] (device_del) from [<80e861ac>] (usb_disable_device+0xd4/0x1e8 drivers/usb/core/message.c:1418)
 r10:00000001 r9:00000000 r8:00000000 r7:85492400 r6:85491400 r5:83c8fb48
 r4:00000001
[<80e860d8>] (usb_disable_device) from [<80e7af28>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2316)
 r9:85401200 r8:854914cc r7:83f5e000 r6:85491488 r5:85491400 r4:60000013
[<80e7ae3c>] (usb_disconnect) from [<80e7dbe8>] (hub_port_connect drivers/usb/core/hub.c:5375 [inline])
[<80e7ae3c>] (usb_disconnect) from [<80e7dbe8>] (hub_port_connect_change drivers/usb/core/hub.c:5675 [inline])
[<80e7ae3c>] (usb_disconnect) from [<80e7dbe8>] (port_event drivers/usb/core/hub.c:5835 [inline])
[<80e7ae3c>] (usb_disconnect) from [<80e7dbe8>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5917)
 r10:00000001 r9:00000100 r8:8405b100 r7:85491400 r6:83f5d800 r5:83f5e210
 r4:00000001
[<80e7cd70>] (hub_event) from [<8027e2e8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3238)
 r10:832d6f70 r9:83810205 r8:8421e000 r7:dddced40 r6:83810200 r5:8405b100
 r4:8575b000
[<8027e134>] (process_one_work) from [<8027ef30>] (process_scheduled_works kernel/workqueue.c:3321 [inline])
[<8027e134>] (process_one_work) from [<8027ef30>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3402)
 r10:61c88647 r9:8421e000 r8:8575b02c r7:82804d40 r6:dddced40 r5:dddced60
 r4:8575b000
[<8027ed34>] (worker_thread) from [<80285f5c>] (kthread+0x12c/0x280 kernel/kthread.c:464)
 r10:00000000 r9:8575b000 r8:8027ed34 r7:dfdd1e60 r6:855e7a80 r5:8421e000
 r4:00000001
[<80285e30>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdf9f5fb0 to 0xdf9f5ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80285e30
 r4:854e8f80
Rebooting in 86400 seconds..