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 6 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: 76 at lib/debugobjects.c:612 debug_print_object+0xc4/0xd8 lib/debugobjects.c:612 ODEBUG: free active (active state 0) object: 8539380c 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: 1 UID: 0 PID: 76 Comm: kworker/1:1 Not tainted 6.15.0-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 r4:8225c8b0 [<80201ae4>] (show_stack) from [<80220608>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201ae4>] (show_stack) from [<80220608>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120) [<802205b4>] (dump_stack_lvl) from [<80220648>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:82a70d18 [<80220630>] (dump_stack) from [<80202614>] (panic+0x120/0x374 kernel/panic.c:382) [<802024f4>] (panic) from [<80258578>] (check_panic_on_warn kernel/panic.c:273 [inline]) [<802024f4>] (panic) from [<80258578>] (get_taint+0x0/0x1c kernel/panic.c:268) r3:8280c684 r2:00000001 r1:82243440 r0:8224adf0 r7:808d0584 [<80258504>] (check_panic_on_warn) from [<802586dc>] (__warn+0x80/0x188 kernel/panic.c:777) [<8025865c>] (__warn) from [<802589cc>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:812) r8:00000009 r7:822b4dbc r6:df981a84 r5:83885400 r4:00000000 [<802587e8>] (warn_slowpath_fmt) from [<808d0584>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:612) r10:00000005 r9:85393000 r8:81c01f18 r7:822dfb98 r6:82adcee4 r5:df981b2c r4:8280ccbc [<808d04c0>] (debug_print_object) from [<808d1fd0>] (__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]) [<808d04c0>] (debug_print_object) from [<808d1fd0>] (debug_check_no_obj_freed+0x25c/0x2a4 lib/debugobjects.c:1129) r8:85394000 r7:8539380c r6:00000100 r5:00000003 r4:00000000 [<808d1d74>] (debug_check_no_obj_freed) from [<80503ba4>] (slab_free_hook mm/slub.c:2311 [inline]) [<808d1d74>] (debug_check_no_obj_freed) from [<80503ba4>] (slab_free mm/slub.c:4642 [inline]) [<808d1d74>] (debug_check_no_obj_freed) from [<80503ba4>] (kfree+0x190/0x394 mm/slub.c:4841) r10:00000001 r9:8297fc1c r8:85393000 r7:80504a48 r6:83002480 r5:ddeb5040 r4:85393000 [<80503a14>] (kfree) from [<80504a48>] (kvfree+0x2c/0x30 mm/slub.c:5055) r10:00000001 r9:8297fc1c r8:85393000 r7:00000000 r6:84b26640 r5:85630a00 r4:85393000 [<80504a1c>] (kvfree) from [<815a6ef8>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2231) r5:85630a00 r4:85393000 [<815a6ecc>] (netdev_release) from [<80b2a3ec>] (device_release+0x38/0xa8 drivers/base/core.c:2568) r5:85630a00 r4:853933c0 [<80b2a3b4>] (device_release) from [<81a3bff0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80b2a3b4>] (device_release) from [<81a3bff0>] (kobject_release lib/kobject.c:720 [inline]) [<80b2a3b4>] (device_release) from [<81a3bff0>] (kref_put include/linux/kref.h:65 [inline]) [<80b2a3b4>] (device_release) from [<81a3bff0>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81d4c55c r4:853933c0 [<81a3bf50>] (kobject_put) from [<80b2a618>] (put_device+0x18/0x1c drivers/base/core.c:3800) r7:000000c0 r6:00000000 r5:00000000 r4:85393000 [<80b2a600>] (put_device) from [<815581d8>] (free_netdev+0x18c/0x244 net/core/dev.c:11899) [<8155804c>] (free_netdev) from [<80e1cb84>] (usbnet_disconnect+0xb8/0xfc drivers/net/usb/usbnet.c:1663) r7:8557c400 r6:853937d4 r5:853936c0 r4:00000000 [<80e1cacc>] (usbnet_disconnect) from [<80e863d8>] (usb_unbind_interface+0x84/0x2b4 drivers/usb/core/driver.c:458) r8:844f9c88 r7:8557c474 r6:8557c430 r5:00000000 r4:844f9c00 [<80e86354>] (usb_unbind_interface) from [<80b326a0>] (device_remove drivers/base/dd.c:569 [inline]) [<80e86354>] (usb_unbind_interface) from [<80b326a0>] (device_remove+0x64/0x6c drivers/base/dd.c:561) r10:00000001 r9:844f9c88 r8:00000044 r7:8557c474 r6:8297fc1c r5:00000000 r4:8557c430 [<80b3263c>] (device_remove) from [<80b33b90>] (__device_release_driver drivers/base/dd.c:1272 [inline]) [<80b3263c>] (device_remove) from [<80b33b90>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295) r5:00000000 r4:8557c430 [<80b33a04>] (device_release_driver_internal) from [<80b33c1c>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318) r9:844f9c88 r8:8335cc40 r7:8335cc38 r6:8335cc0c r5:8557c430 r4:8335cc30 [<80b33c04>] (device_release_driver) from [<80b31cf4>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:579) [<80b31c28>] (bus_remove_device) from [<80b2c050>] (device_del+0x148/0x38c drivers/base/core.c:3881) r9:844f9c88 r8:83885400 r7:04208060 r6:00000000 r5:8557c430 r4:8557c474 [<80b2bf08>] (device_del) from [<80e83e28>] (usb_disable_device+0xd4/0x1e8 drivers/usb/core/message.c:1418) r10:00000001 r9:00000000 r8:00000000 r7:8557c400 r6:844f9c00 r5:84b26788 r4:00000001 [<80e83d54>] (usb_disable_device) from [<80e78ba4>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2316) r9:84873200 r8:844f9ccc r7:84037c00 r6:844f9c88 r5:844f9c00 r4:600d0113 [<80e78ab8>] (usb_disconnect) from [<80e7b864>] (hub_port_connect drivers/usb/core/hub.c:5371 [inline]) [<80e78ab8>] (usb_disconnect) from [<80e7b864>] (hub_port_connect_change drivers/usb/core/hub.c:5671 [inline]) [<80e78ab8>] (usb_disconnect) from [<80e7b864>] (port_event drivers/usb/core/hub.c:5831 [inline]) [<80e78ab8>] (usb_disconnect) from [<80e7b864>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5913) r10:00000001 r9:00000100 r8:84205500 r7:844f9c00 r6:84037400 r5:84037e10 r4:00000001 [<80e7a9ec>] (hub_event) from [<8027e2a8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3238) r10:8335ce70 r9:8326f605 r8:83885400 r7:ddde2d40 r6:8326f600 r5:84205500 r4:832a1180 [<8027e0f4>] (process_one_work) from [<8027eef0>] (process_scheduled_works kernel/workqueue.c:3321 [inline]) [<8027e0f4>] (process_one_work) from [<8027eef0>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3402) r10:61c88647 r9:83885400 r8:832a11ac r7:82804d40 r6:ddde2d40 r5:ddde2d60 r4:832a1180 [<8027ecf4>] (worker_thread) from [<80285f1c>] (kthread+0x12c/0x280 kernel/kthread.c:464) r10:00000000 r9:832a1180 r8:8027ecf4 r7:df879e60 r6:838a3b80 r5:83885400 r4:00000001 [<80285df0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf981fb0 to 0xdf981ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80285df0 r4:832c64c0 Rebooting in 86400 seconds..