cdc_ncm 1-1:1.0 usb0: register 'cdc_ncm' at usb-dummy_hcd.0-1, CDC NCM (NO ZLP), 42:42:42:42:42:42 usb 1-1: USB disconnect, device number 3 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: 9 at lib/debugobjects.c:515 debug_print_object+0xc4/0xd8 lib/debugobjects.c:515 ODEBUG: free active (active state 0) object: 84bf97cc 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 UID: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.11.0-rc3-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<81953ee8>] (dump_backtrace) from [<81953fe4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:826228c4 r5:00000000 r4:8200bba8 [<81953fcc>] (show_stack) from [<81971cb8>] (__dump_stack lib/dump_stack.c:93 [inline]) [<81953fcc>] (show_stack) from [<81971cb8>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119) [<81971c64>] (dump_stack_lvl) from [<81971cf8>] (dump_stack+0x18/0x1c lib/dump_stack.c:128) r5:00000000 r4:8286bd18 [<81971ce0>] (dump_stack) from [<81954a8c>] (panic+0x120/0x358 kernel/panic.c:348) [<8195496c>] (panic) from [<802421dc>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<8195496c>] (panic) from [<802421dc>] (get_taint+0x0/0x1c kernel/panic.c:236) r3:8260c5c4 r2:00000001 r1:81ff43cc r0:81ffc1a4 r7:80825a74 [<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 r7:8205a8a0 r6:df83da8c r5:82e36000 r4:00000000 [<80242438>] (warn_slowpath_fmt) from [<80825a74>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:515) r10:00000005 r9:84bf9000 r8:81a01c24 r7:82084e28 r6:828cf69c r5:df83db34 r4:8260cda4 [<808259b0>] (debug_print_object) from [<80827314>] (__debug_check_no_obj_freed lib/debugobjects.c:990 [inline]) [<808259b0>] (debug_print_object) from [<80827314>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1020) r8:84bf9800 r7:84bf97cc r6:00000100 r5:00000003 r4:00000000 [<808270c0>] (debug_check_no_obj_freed) from [<804bc624>] (slab_free_hook mm/slub.c:2219 [inline]) [<808270c0>] (debug_check_no_obj_freed) from [<804bc624>] (slab_free mm/slub.c:4473 [inline]) [<808270c0>] (debug_check_no_obj_freed) from [<804bc624>] (kfree+0x198/0x338 mm/slub.c:4594) r10:82778724 r9:84bb7880 r8:84bf9000 r7:80461638 r6:82c023c0 r5:ddea3ee0 r4:84bf9000 [<804bc48c>] (kfree) from [<80461638>] (kvfree+0x2c/0x30 mm/util.c:696) r10:82778724 r9:84bb7880 r8:84bf9000 r7:00000000 r6:8512e480 r5:850ea900 r4:84bf9000 [<8046160c>] (kvfree) from [<814bcd4c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) r5:850ea900 r4:84bf9000 [<814bcd20>] (netdev_release) from [<80a6c678>] (device_release+0x38/0xa8 drivers/base/core.c:2582) r5:850ea900 r4:84bf93c0 [<80a6c640>] (device_release) from [<8192dd70>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a6c640>] (device_release) from [<8192dd70>] (kobject_release lib/kobject.c:720 [inline]) [<80a6c640>] (device_release) from [<8192dd70>] (kref_put include/linux/kref.h:65 [inline]) [<80a6c640>] (device_release) from [<8192dd70>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b4b6cc r4:84bf93c0 [<8192dca8>] (kobject_put) from [<80a6c8a4>] (put_device+0x18/0x1c drivers/base/core.c:3790) r7:84bb7000 r6:84bf910c r5:84bf9000 r4:00000000 [<80a6c88c>] (put_device) from [<81471cb4>] (free_netdev+0x114/0x18c net/core/dev.c:11197) [<81471ba0>] (free_netdev) from [<80d4e018>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84bf9794 r5:84bf9680 r4:00000000 [<80d4df6c>] (usbnet_disconnect) from [<80db5d38>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:84bb7030 r6:82778724 r5:00000000 r4:84bb7000 [<80db5cb4>] (usb_unbind_interface) from [<80a7477c>] (device_remove drivers/base/dd.c:568 [inline]) [<80db5cb4>] (usb_unbind_interface) from [<80a7477c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:84bb7880 r8:00000044 r7:84bb7074 r6:82778724 r5:00000000 r4:84bb7030 [<80a74718>] (device_remove) from [<80a75c94>] (__device_release_driver drivers/base/dd.c:1272 [inline]) [<80a74718>] (device_remove) from [<80a75c94>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295) r5:00000000 r4:84bb7030 [<80a75b08>] (device_release_driver_internal) from [<80a75d20>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318) r9:84bb7880 r8:82eb2b40 r7:82eb2b38 r6:82eb2b0c r5:84bb7030 r4:82eb2b30 [<80a75d08>] (device_release_driver) from [<80a73e00>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a73d34>] (bus_remove_device) from [<80a6df10>] (device_del+0x148/0x38c drivers/base/core.c:3871) r9:84bb7880 r8:82e36000 r7:04208060 r6:00000000 r5:84bb7030 r4:84bb7074 [<80a6ddc8>] (device_del) from [<80db3754>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:84bb7000 r7:84bb7800 r6:850daac8 r5:00000001 r4:00000038 [<80db3678>] (usb_disable_device) from [<80da85b4>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:848c2a00 r8:84bb78c4 r7:83a57000 r6:84bb7880 r5:84bb7800 r4:60000013 [<80da84c8>] (usb_disconnect) from [<80dab264>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80da84c8>] (usb_disconnect) from [<80dab264>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80da84c8>] (usb_disconnect) from [<80dab264>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80da84c8>] (usb_disconnect) from [<80dab264>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83ba9700 r7:84bb7800 r6:83a56800 r5:83a57210 r4:00000001 [<80daa3ec>] (hub_event) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r10:82fcf405 r9:82e36000 r8:00800000 r7:dddd0000 r6:82fcf400 r5:83ba9700 r4:82cb5100 [<80265d54>] (process_one_work) from [<80266aec>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80265d54>] (process_one_work) from [<80266aec>] (worker_thread+0x1ec/0x3f4 kernel/workqueue.c:3390) r10:82e36000 r9:82cb512c r8:61c88647 r7:dddd0020 r6:82604d40 r5:dddd0000 r4:82cb5100 [<80266900>] (worker_thread) from [<8026fb44>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df839e78 r8:82cb4a00 r7:82cb5100 r6:80266900 r5:82e36000 r4:82cb4180 [<8026fa40>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf83dfb0 to 0xdf83dff8) 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 r5:8026fa40 r4:82cb4180 Rebooting in 86400 seconds..