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: 0 PID: 714 at lib/debugobjects.c:515 debug_print_object+0xc4/0xd8 lib/debugobjects.c:515 ODEBUG: free active (active state 0) object: 848c27cc 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: 714 Comm: kworker/0:2 Not tainted 6.10.0-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818e5500>] (dump_backtrace) from [<818e55fc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622804 r5:00000000 r4:81fe5f10 [<818e55e4>] (show_stack) from [<81902d34>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818e55e4>] (show_stack) from [<81902d34>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<81902ce0>] (dump_stack_lvl) from [<81902d74>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82861d0c [<81902d5c>] (dump_stack) from [<818e60a4>] (panic+0x120/0x358 kernel/panic.c:347) [<818e5f84>] (panic) from [<80241f54>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818e5f84>] (panic) from [<80241f54>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fcf038 r0:81fd66c0 r7:80829764 [<80241ee0>] (check_panic_on_warn) from [<80242148>] (__warn+0x7c/0x180 kernel/panic.c:693) [<802420cc>] (__warn) from [<80242434>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:726) r8:00000009 r7:82035464 r6:e0635a8c r5:83535400 r4:00000000 [<80242250>] (warn_slowpath_fmt) from [<80829764>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:515) r10:00000005 r9:848c2000 r8:81a01b64 r7:8205e5f0 r6:828c5414 r5:e0635b34 r4:8260cda8 [<808296a0>] (debug_print_object) from [<8082b004>] (__debug_check_no_obj_freed lib/debugobjects.c:990 [inline]) [<808296a0>] (debug_print_object) from [<8082b004>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1020) r8:848c2800 r7:848c27cc r6:00000100 r5:00000003 r4:00000000 [<8082adb0>] (debug_check_no_obj_freed) from [<804bae48>] (slab_free_hook mm/slub.c:2163 [inline]) [<8082adb0>] (debug_check_no_obj_freed) from [<804bae48>] (slab_free mm/slub.c:4438 [inline]) [<8082adb0>] (debug_check_no_obj_freed) from [<804bae48>] (kfree+0x1a0/0x340 mm/slub.c:4559) r10:82778d9c r9:85562880 r8:848c2000 r7:80460f78 r6:82c023c0 r5:dde9cb00 r4:848c2000 [<804baca8>] (kfree) from [<80460f78>] (kvfree+0x2c/0x30 mm/util.c:685) r10:82778d9c r9:85562880 r8:848c2000 r7:00000000 r6:8572a600 r5:85202380 r4:848c2000 [<80460f4c>] (kvfree) from [<8144e9fc>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) r5:85202380 r4:848c2000 [<8144e9d0>] (netdev_release) from [<80a6301c>] (device_release+0x38/0xa8 drivers/base/core.c:2581) r5:85202380 r4:848c23c0 [<80a62fe4>] (device_release) from [<818bf35c>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a62fe4>] (device_release) from [<818bf35c>] (kobject_release lib/kobject.c:720 [inline]) [<80a62fe4>] (device_release) from [<818bf35c>] (kref_put include/linux/kref.h:65 [inline]) [<80a62fe4>] (device_release) from [<818bf35c>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b48c84 r4:848c23c0 [<818bf294>] (kobject_put) from [<80a63248>] (put_device+0x18/0x1c drivers/base/core.c:3787) r7:85563000 r6:848c210c r5:848c2000 r4:00000000 [<80a63230>] (put_device) from [<814039dc>] (free_netdev+0x114/0x18c net/core/dev.c:11196) [<814038c8>] (free_netdev) from [<80d39e08>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:848c2794 r5:848c2680 r4:00000000 [<80d39d5c>] (usbnet_disconnect) from [<80d98f0c>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:85563030 r6:82778d9c r5:00000000 r4:85563000 [<80d98e88>] (usb_unbind_interface) from [<80a6b124>] (device_remove drivers/base/dd.c:568 [inline]) [<80d98e88>] (usb_unbind_interface) from [<80a6b124>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:85562880 r8:00000044 r7:85563074 r6:82778d9c r5:00000000 r4:85563030 [<80a6b0c0>] (device_remove) from [<80a6c63c>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a6b0c0>] (device_remove) from [<80a6c63c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:85563030 [<80a6c4b0>] (device_release_driver_internal) from [<80a6c6c8>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:85562880 r8:83408040 r7:83408038 r6:8340800c r5:85563030 r4:83408030 [<80a6c6b0>] (device_release_driver) from [<80a6a7ac>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a6a6e0>] (bus_remove_device) from [<80a648c4>] (device_del+0x148/0x38c drivers/base/core.c:3868) r9:85562880 r8:83535400 r7:04208060 r6:00000000 r5:85563030 r4:85563074 [<80a6477c>] (device_del) from [<80d96964>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:85563000 r7:85562800 r6:8557c3c8 r5:00000001 r4:00000038 [<80d96888>] (usb_disable_device) from [<80d8b7c4>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:84dd3400 r8:855628c4 r7:83d27400 r6:85562880 r5:85562800 r4:60000013 [<80d8b6d8>] (usb_disconnect) from [<80d8e474>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d8b6d8>] (usb_disconnect) from [<80d8e474>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d8b6d8>] (usb_disconnect) from [<80d8e474>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d8b6d8>] (usb_disconnect) from [<80d8e474>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83e70900 r7:85562800 r6:83d26c00 r5:83d27610 r4:00000001 [<80d8d5fc>] (hub_event) from [<802658ac>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r10:82fd4405 r9:83535400 r8:00800000 r7:dddd0000 r6:82fd4400 r5:83e70900 r4:82f33580 [<802656f8>] (process_one_work) from [<80266490>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<802656f8>] (process_one_work) from [<80266490>] (worker_thread+0x1ec/0x3f4 kernel/workqueue.c:3390) r10:83535400 r9:82f335ac r8:61c88647 r7:dddd0020 r6:82604d40 r5:dddd0000 r4:82f33580 [<802662a4>] (worker_thread) from [<8026f4e8>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df841e78 r8:837826c0 r7:82f33580 r6:802662a4 r5:83535400 r4:82f5ec80 [<8026f3e4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:134) Exception stack(0xe0635fb0 to 0xe0635ff8) 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 r5:8026f3e4 r4:82f5ec80 Rebooting in 86400 seconds..