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 2 cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.1-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3763 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 84f2f7ac 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: 3763 Comm: kworker/0:5 Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818a2c9c>] (dump_backtrace) from [<818a2d98>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fcef14 [<818a2d80>] (show_stack) from [<818c04d4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818a2d80>] (show_stack) from [<818c04d4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818c0480>] (dump_stack_lvl) from [<818c0514>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285ad18 [<818c04fc>] (dump_stack) from [<818a3840>] (panic+0x120/0x358 kernel/panic.c:348) [<818a3720>] (panic) from [<80243b2c>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818a3720>] (panic) from [<80243b2c>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fb7c54 r0:81fbf7f8 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 r7:8201b824 r6:e07cda7c r5:84dc6000 r4:00000000 [<80243e28>] (warn_slowpath_fmt) from [<8080a800>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84f2f000 r8:81a02b44 r7:820437ac r6:828be454 r5:e07cdb24 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) r8:84f2f800 r7:84f2f7ac 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 r9:850e0080 r8:84f2f000 r7:8045acbc r6:82c023c0 r5:ddeab1a0 r4:84f2f000 [<804b2e54>] (kfree) from [<8045acbc>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a48 r9:850e0080 r8:84f2f000 r7:00000000 r6:84fac980 r5:84fa5b80 r4:84f2f000 [<8045ac90>] (kvfree) from [<813dcd50>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10803) r5:84fa5b80 r4:84f2f000 [<813dcd34>] (netdev_freemem) from [<81417e10>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<81417de4>] (netdev_release) from [<80a40e90>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:84fa5b80 r4:84f2f3b8 [<80a40e58>] (device_release) from [<8187cc00>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a40e58>] (device_release) from [<8187cc00>] (kobject_release lib/kobject.c:720 [inline]) [<80a40e58>] (device_release) from [<8187cc00>] (kref_put include/linux/kref.h:65 [inline]) [<80a40e58>] (device_release) from [<8187cc00>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b48984 r4:84f2f3b8 [<8187cb38>] (kobject_put) from [<80a41118>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:850e0400 r6:84f2f10c r5:84f2f000 r4:00000000 [<80a41100>] (put_device) from [<813ce038>] (free_netdev+0x108/0x188 net/core/dev.c:10999) [<813cdf30>] (free_netdev) from [<80d11c30>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84f2f774 r5:84f2f660 r4:00000000 [<80d11b84>] (usbnet_disconnect) from [<80d6cd24>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:850e0430 r6:82775a48 r5:00000000 r4:850e0400 [<80d6cca0>] (usb_unbind_interface) from [<80a48f6c>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6cca0>] (usb_unbind_interface) from [<80a48f6c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:850e0080 r9:828eecfc r8:00000044 r7:850e0474 r6:82775a48 r5:00000000 r4:850e0430 [<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 r4:850e0430 [<80a4a2f8>] (device_release_driver_internal) from [<80a4a510>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eecfc r8:82ecdd40 r7:82ecdd38 r6:82ecdd0c r5:850e0430 r4:82ecdd30 [<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 r8:850e0400 r7:84dc6000 r6:85033c48 r5:04208060 r4:850e0430 [<80a42538>] (device_del) from [<80d6a780>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:850e0400 r7:850e0000 r6:85033c48 r5:00000001 r4:00000038 [<80d6a6a4>] (usb_disable_device) from [<80d5f5ec>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:84701c00 r8:850e00c4 r7:835cb800 r6:850e0080 r5:850e0000 r4:60000113 [<80d5f500>] (usb_disconnect) from [<80d6229c>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d5f500>] (usb_disconnect) from [<80d6229c>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d5f500>] (usb_disconnect) from [<80d6229c>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d5f500>] (usb_disconnect) from [<80d6229c>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83802b00 r7:850e0000 r6:835cb000 r5:835cba10 r4:00000001 [<80d61424>] (hub_event) from [<80266878>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3267) r10:82fce205 r9:84dc6000 r8:00000080 r7:dddd00c0 r6:82fce200 r5:83802b00 r4:84fa5980 [<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) r10:84dc6000 r9:84fa59ac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:84fa5980 [<802673b0>] (worker_thread) from [<802702b0>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:dffb5e90 r8:84f9d7c0 r7:84fa5980 r6:802673b0 r5:84dc6000 r4:84fabf00 [<802701ac>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xe07cdfb0 to 0xe07cdff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802701ac r4:84fabf00 Rebooting in 86400 seconds..