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 13 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: 8 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 8551ffcc object type: work_struct hint: usbnet_deferred_kevent+0x0/0x388 drivers/net/usb/usbnet.c:627 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.11.0-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<819839d8>] (dump_backtrace) from [<81983ad4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:826228c4 r5:00000000 r4:82035550 [<81983abc>] (show_stack) from [<819a1a38>] (__dump_stack lib/dump_stack.c:93 [inline]) [<81983abc>] (show_stack) from [<819a1a38>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119) [<819a19e4>] (dump_stack_lvl) from [<819a1a78>] (dump_stack+0x18/0x1c lib/dump_stack.c:128) r5:00000000 r4:8286ed18 [<819a1a60>] (dump_stack) from [<8198457c>] (panic+0x120/0x370 kernel/panic.c:354) [<8198445c>] (panic) from [<802421cc>] (check_panic_on_warn kernel/panic.c:243 [inline]) [<8198445c>] (panic) from [<802421cc>] (get_taint+0x0/0x1c kernel/panic.c:238) r3:8260c5c4 r2:00000001 r1:8201dd08 r0:82025ad4 r7:80847c08 [<80242158>] (check_panic_on_warn) from [<8024232c>] (__warn+0x80/0x188 kernel/panic.c:748) [<802422ac>] (__warn) from [<8024261c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:783) r8:00000009 r7:8208497c r6:df839a8c r5:82e35400 r4:00000000 [<80242438>] (warn_slowpath_fmt) from [<80847c08>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:8551f800 r8:81a01c24 r7:820aef70 r6:828db0c4 r5:df839b34 r4:8260cda4 [<80847b44>] (debug_print_object) from [<80849498>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<80847b44>] (debug_print_object) from [<80849498>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:85520000 r7:8551ffcc r6:00000100 r5:00000003 r4:00000000 [<80849244>] (debug_check_no_obj_freed) from [<804bef54>] (slab_free_hook mm/slub.c:2217 [inline]) [<80849244>] (debug_check_no_obj_freed) from [<804bef54>] (slab_free mm/slub.c:4474 [inline]) [<80849244>] (debug_check_no_obj_freed) from [<804bef54>] (kfree+0x198/0x338 mm/slub.c:4595) r10:8277acbc r9:8562f880 r8:8551f800 r7:80463c7c r6:82c023c0 r5:ddeb8760 r4:8551f800 [<804bedbc>] (kfree) from [<80463c7c>] (kvfree+0x2c/0x30 mm/util.c:696) r10:8277acbc r9:8562f880 r8:8551f800 r7:00000000 r6:854af340 r5:84c97580 r4:8551f800 [<80463c50>] (kvfree) from [<814e7108>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2034) r5:84c97580 r4:8551f800 [<814e70dc>] (netdev_release) from [<80a91dd8>] (device_release+0x38/0xa8 drivers/base/core.c:2582) r5:84c97580 r4:8551fbc0 [<80a91da0>] (device_release) from [<8195d828>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a91da0>] (device_release) from [<8195d828>] (kobject_release lib/kobject.c:720 [inline]) [<80a91da0>] (device_release) from [<8195d828>] (kref_put include/linux/kref.h:65 [inline]) [<80a91da0>] (device_release) from [<8195d828>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81b4ba0c r4:8551fbc0 [<8195d788>] (kobject_put) from [<80a92004>] (put_device+0x18/0x1c drivers/base/core.c:3790) r7:8562fc00 r6:00000000 r5:8551f800 r4:00000000 [<80a91fec>] (put_device) from [<8149b218>] (free_netdev+0x134/0x1ac net/core/dev.c:11251) [<8149b0e4>] (free_netdev) from [<80d75578>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1633) r6:8551ff94 r5:8551fe80 r4:00000000 [<80d754cc>] (usbnet_disconnect) from [<80ddd434>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8562fc30 r6:8277acbc r5:00000000 r4:8562fc00 [<80ddd3b0>] (usb_unbind_interface) from [<80a99edc>] (device_remove drivers/base/dd.c:568 [inline]) [<80ddd3b0>] (usb_unbind_interface) from [<80a99edc>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:8562f880 r8:00000044 r7:8562fc74 r6:8277acbc r5:00000000 r4:8562fc30 [<80a99e78>] (device_remove) from [<80a9b3f4>] (__device_release_driver drivers/base/dd.c:1272 [inline]) [<80a99e78>] (device_remove) from [<80a9b3f4>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295) r5:00000000 r4:8562fc30 [<80a9b268>] (device_release_driver_internal) from [<80a9b480>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318) r9:8562f880 r8:82f5ad40 r7:82f5ad38 r6:82f5ad0c r5:8562fc30 r4:82f5ad30 [<80a9b468>] (device_release_driver) from [<80a99560>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a99494>] (bus_remove_device) from [<80a93670>] (device_del+0x148/0x38c drivers/base/core.c:3871) r9:8562f880 r8:82e35400 r7:04208060 r6:00000000 r5:8562fc30 r4:8562fc74 [<80a93528>] (device_del) from [<80ddae50>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8562fc00 r7:8562f800 r6:84c77408 r5:00000001 r4:00000038 [<80ddad74>] (usb_disable_device) from [<80dcfcb4>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:84f59c00 r8:8562f8c4 r7:82fa5000 r6:8562f880 r5:8562f800 r4:60000113 [<80dcfbc8>] (usb_disconnect) from [<80dd2964>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80dcfbc8>] (usb_disconnect) from [<80dd2964>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80dcfbc8>] (usb_disconnect) from [<80dd2964>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80dcfbc8>] (usb_disconnect) from [<80dd2964>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83477100 r7:8562f800 r6:82fa4800 r5:82fa5210 r4:00000001 [<80dd1aec>] (hub_event) from [<80265f98>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r10:82e6e805 r9:82e35400 r8:00800000 r7:dddcff40 r6:82e6e800 r5:83477100 r4:82cb5080 [<80265de4>] (process_one_work) from [<80266b7c>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80265de4>] (process_one_work) from [<80266b7c>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3393) r10:82e35400 r9:82cb50ac r8:61c88647 r7:dddcff60 r6:82604d40 r5:dddcff40 r4:82cb5080 [<80266990>] (worker_thread) from [<8026fb98>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df819e48 r8:82cb48c0 r7:82cb5080 r6:80266990 r5:82e35400 r4:82cb4180 [<8026fa94>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf839fb0 to 0xdf839ff8) 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 r5:8026fa94 r4:82cb4180 Rebooting in 86400 seconds..