cdc_ncm 1-1:1.0 eth1: 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 19 cdc_ncm 1-1:1.0 eth1: unregister 'cdc_ncm' usb-dummy_hcd.0-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5724 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 84884fcc object type: work_struct hint: usbnet_deferred_kevent+0x0/0x394 drivers/net/usb/usbnet.c:633 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 1 UID: 0 PID: 5724 Comm: kworker/1:3 Not tainted 6.12.0-rc4-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<8199a458>] (dump_backtrace) from [<8199a554>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622f44 r5:00000000 r4:8203d900 [<8199a53c>] (show_stack) from [<819b89f0>] (__dump_stack lib/dump_stack.c:94 [inline]) [<8199a53c>] (show_stack) from [<819b89f0>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120) [<819b899c>] (dump_stack_lvl) from [<819b8a30>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:82870d18 [<819b8a18>] (dump_stack) from [<8199b080>] (panic+0x120/0x374 kernel/panic.c:354) [<8199af60>] (panic) from [<802420e0>] (check_panic_on_warn kernel/panic.c:243 [inline]) [<8199af60>] (panic) from [<802420e0>] (get_taint+0x0/0x1c kernel/panic.c:238) r3:8260c5c4 r2:00000001 r1:82025cd4 r0:8202d73c r7:808547a8 [<8024206c>] (check_panic_on_warn) from [<80242244>] (__warn+0x80/0x188 kernel/panic.c:748) [<802421c4>] (__warn) from [<80242534>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:783) r8:00000009 r7:8208ca24 r6:dfa19a8c r5:83688c00 r4:00000000 [<80242350>] (warn_slowpath_fmt) from [<808547a8>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84884800 r8:81a01c24 r7:820b7814 r6:828dd084 r5:dfa19b34 r4:8260cda4 [<808546e4>] (debug_print_object) from [<80856038>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<808546e4>] (debug_print_object) from [<80856038>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:84885000 r7:84884fcc r6:00000100 r5:00000003 r4:00000000 [<80855de4>] (debug_check_no_obj_freed) from [<804c91c4>] (slab_free_hook mm/slub.c:2273 [inline]) [<80855de4>] (debug_check_no_obj_freed) from [<804c91c4>] (slab_free mm/slub.c:4579 [inline]) [<80855de4>] (debug_check_no_obj_freed) from [<804c91c4>] (kfree+0x190/0x394 mm/slub.c:4727) r10:8277e5bc r9:8503d080 r8:84884800 r7:8046d198 r6:82c023c0 r5:dde9c200 r4:84884800 [<804c9034>] (kfree) from [<8046d198>] (kvfree+0x2c/0x30 mm/util.c:701) r10:8277e5bc r9:8503d080 r8:84884800 r7:00000000 r6:850c6f80 r5:851c7180 r4:84884800 [<8046d16c>] (kvfree) from [<814fc5d0>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2034) r5:851c7180 r4:84884800 [<814fc5a4>] (netdev_release) from [<80aa3b2c>] (device_release+0x38/0xa8 drivers/base/core.c:2575) r5:851c7180 r4:84884bc0 [<80aa3af4>] (device_release) from [<819742ac>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80aa3af4>] (device_release) from [<819742ac>] (kobject_release lib/kobject.c:720 [inline]) [<80aa3af4>] (device_release) from [<819742ac>] (kref_put include/linux/kref.h:65 [inline]) [<80aa3af4>] (device_release) from [<819742ac>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81b4c9c4 r4:84884bc0 [<8197420c>] (kobject_put) from [<80aa3d58>] (put_device+0x18/0x1c drivers/base/core.c:3783) r7:8503c000 r6:00000000 r5:84884800 r4:00000000 [<80aa3d40>] (put_device) from [<814b0c9c>] (free_netdev+0x134/0x1ac net/core/dev.c:11255) [<814b0b68>] (free_netdev) from [<80d8810c>] (usbnet_disconnect+0xb8/0xfc drivers/net/usb/usbnet.c:1652) r6:84884f94 r5:84884e80 r4:00000000 [<80d88054>] (usbnet_disconnect) from [<80df0928>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8503c030 r6:8277e5bc r5:00000000 r4:8503c000 [<80df08a4>] (usb_unbind_interface) from [<80aabc1c>] (device_remove drivers/base/dd.c:569 [inline]) [<80df08a4>] (usb_unbind_interface) from [<80aabc1c>] (device_remove+0x64/0x6c drivers/base/dd.c:561) r10:00000000 r9:8503d080 r8:00000044 r7:8503c074 r6:8277e5bc r5:00000000 r4:8503c030 [<80aabbb8>] (device_remove) from [<80aad108>] (__device_release_driver drivers/base/dd.c:1273 [inline]) [<80aabbb8>] (device_remove) from [<80aad108>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1296) r5:00000000 r4:8503c030 [<80aacf7c>] (device_release_driver_internal) from [<80aad194>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1319) r9:8503d080 r8:82fbd240 r7:82fbd238 r6:82fbd20c r5:8503c030 r4:82fbd230 [<80aad17c>] (device_release_driver) from [<80aab278>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:576) [<80aab1ac>] (bus_remove_device) from [<80aa55b4>] (device_del+0x148/0x38c drivers/base/core.c:3864) r9:8503d080 r8:83688c00 r7:04208060 r6:00000000 r5:8503c030 r4:8503c074 [<80aa546c>] (device_del) from [<80dee344>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8503c000 r7:8503d000 r6:85087048 r5:00000001 r4:00000038 [<80dee268>] (usb_disable_device) from [<80de31a8>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:849d3400 r8:8503d0c4 r7:83b67400 r6:8503d080 r5:8503d000 r4:60000113 [<80de30bc>] (usb_disconnect) from [<80de5e58>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80de30bc>] (usb_disconnect) from [<80de5e58>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80de30bc>] (usb_disconnect) from [<80de5e58>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80de30bc>] (usb_disconnect) from [<80de5e58>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:8392f500 r7:8503d000 r6:83b66c00 r5:83b67610 r4:00000001 [<80de4fe0>] (hub_event) from [<80266034>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3229) r10:82f1da05 r9:83688c00 r8:01800000 r7:ddde40c0 r6:82f1da00 r5:8392f500 r4:851c7880 [<80265e80>] (process_one_work) from [<80266c18>] (process_scheduled_works kernel/workqueue.c:3310 [inline]) [<80265e80>] (process_one_work) from [<80266c18>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3391) r10:83688c00 r9:851c78ac r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:851c7880 [<80266a2c>] (worker_thread) from [<8026fc94>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:ec539e78 r8:851d1f00 r7:851c7880 r6:80266a2c r5:83688c00 r4:851d1800 [<8026fb90>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfa19fb0 to 0xdfa19ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fb90 r4:851d1800 Rebooting in 86400 seconds..