usb 1-1: USB disconnect, device number 40 cdc_ncm 1-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.0-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2794 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 8524cfac 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: 2794 Comm: kworker/0:3 Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818a297c>] (dump_backtrace) from [<818a2a78>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fcee18 [<818a2a60>] (show_stack) from [<818c01b4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818a2a60>] (show_stack) from [<818c01b4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818c0160>] (dump_stack_lvl) from [<818c01f4>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285ad18 [<818c01dc>] (dump_stack) from [<818a3520>] (panic+0x120/0x358 kernel/panic.c:348) [<818a3400>] (panic) from [<80243b2c>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818a3400>] (panic) from [<80243b2c>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fb7b58 r0:81fbf6fc r7:8080a800 [<80243ab8>] (check_panic_on_warn) from [<80243d20>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243ca4>] (__warn) from [<8024400c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:8201b728 r6:ebe55a7c r5:836e3000 r4:00000000 [<80243e28>] (warn_slowpath_fmt) from [<8080a800>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:8524c800 r8:81a02b44 r7:820436b0 r6:828be454 r5:ebe55b24 r4:8260ce18 [<8080a73c>] (debug_print_object) from [<8080c098>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080a73c>] (debug_print_object) from [<8080c098>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:8524d000 r7:8524cfac r6:00000100 r5:00000003 r4:00000000 [<8080be44>] (debug_check_no_obj_freed) from [<804b2ff4>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080be44>] (debug_check_no_obj_freed) from [<804b2ff4>] (slab_free mm/slub.c:4280 [inline]) [<8080be44>] (debug_check_no_obj_freed) from [<804b2ff4>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a48 r9:8505e080 r8:8524c800 r7:8045acbc r6:82c023c0 r5:ddeb2220 r4:8524c800 [<804b2e54>] (kfree) from [<8045acbc>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a48 r9:8505e080 r8:8524c800 r7:00000000 r6:845ccb80 r5:84f19580 r4:8524c800 [<8045ac90>] (kvfree) from [<813dca38>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10803) r5:84f19580 r4:8524c800 [<813dca1c>] (netdev_freemem) from [<81417af8>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<81417acc>] (netdev_release) from [<80a40e90>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:84f19580 r4:8524cbb8 [<80a40e58>] (device_release) from [<8187c8e0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a40e58>] (device_release) from [<8187c8e0>] (kobject_release lib/kobject.c:720 [inline]) [<80a40e58>] (device_release) from [<8187c8e0>] (kref_put include/linux/kref.h:65 [inline]) [<80a40e58>] (device_release) from [<8187c8e0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b48984 r4:8524cbb8 [<8187c818>] (kobject_put) from [<80a41118>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:8505d000 r6:8524c90c r5:8524c800 r4:00000000 [<80a41100>] (put_device) from [<813cdd20>] (free_netdev+0x108/0x188 net/core/dev.c:10999) [<813cdc18>] (free_netdev) from [<80d11a28>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:8524cf74 r5:8524ce60 r4:00000000 [<80d1197c>] (usbnet_disconnect) from [<80d6cb1c>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8505d030 r6:82775a48 r5:00000000 r4:8505d000 [<80d6ca98>] (usb_unbind_interface) from [<80a48f6c>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6ca98>] (usb_unbind_interface) from [<80a48f6c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:8505e080 r9:828eecfc r8:00000044 r7:8505d074 r6:82775a48 r5:00000000 r4:8505d030 [<80a48f08>] (device_remove) from [<80a4a484>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a48f08>] (device_remove) from [<80a4a484>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:8505d030 [<80a4a2f8>] (device_release_driver_internal) from [<80a4a510>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eecfc r8:82f52b40 r7:82f52b38 r6:82f52b0c r5:8505d030 r4:82f52b30 [<80a4a4f8>] (device_release_driver) from [<80a48610>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a48544>] (bus_remove_device) from [<80a42694>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828eecfc r8:8505d000 r7:836e3000 r6:84ec5208 r5:04208060 r4:8505d030 [<80a42538>] (device_del) from [<80d6a578>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8505d000 r7:8505e000 r6:84ec5208 r5:00000001 r4:00000038 [<80d6a49c>] (usb_disable_device) from [<80d5f3e4>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:83fcb200 r8:8505e0c4 r7:83841400 r6:8505e080 r5:8505e000 r4:60000013 [<80d5f2f8>] (usb_disconnect) from [<80d62094>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d5f2f8>] (usb_disconnect) from [<80d62094>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d5f2f8>] (usb_disconnect) from [<80d62094>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d5f2f8>] (usb_disconnect) from [<80d62094>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:8372bf00 r7:8505e000 r6:83840c00 r5:83841610 r4:00000001 [<80d6121c>] (hub_event) from [<80266878>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3267) r10:82e65805 r9:836e3000 r8:00000080 r7:dddd00c0 r6:82e65800 r5:8372bf00 r4:8428b100 [<802666c0>] (process_one_work) from [<8026759c>] (process_scheduled_works kernel/workqueue.c:3348 [inline]) [<802666c0>] (process_one_work) from [<8026759c>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3429) r10:836e3000 r9:8428b12c r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:8428b100 [<802673b0>] (worker_thread) from [<802702b0>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df835e90 r8:8428ae00 r7:8428b100 r6:802673b0 r5:836e3000 r4:8428ad80 [<802701ac>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xebe55fb0 to 0xebe55ff8) 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 r5:802701ac r4:8428ad80 Rebooting in 86400 seconds..