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 10 cdc_ncm 1-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.0-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4201 at lib/debugobjects.c:515 debug_print_object+0xc4/0xd8 lib/debugobjects.c:515 ODEBUG: free active (active state 0) object: 84d4e7cc 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: 1 UID: 0 PID: 4201 Comm: kworker/1:14 Not tainted 6.11.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<819532c8>] (dump_backtrace) from [<819533c4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:826228c4 r5:00000000 r4:8200ba14 [<819533ac>] (show_stack) from [<81971074>] (__dump_stack lib/dump_stack.c:93 [inline]) [<819533ac>] (show_stack) from [<81971074>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119) [<81971020>] (dump_stack_lvl) from [<819710b4>] (dump_stack+0x18/0x1c lib/dump_stack.c:128) r5:00000000 r4:8286bd18 [<8197109c>] (dump_stack) from [<81953e6c>] (panic+0x120/0x358 kernel/panic.c:348) [<81953d4c>] (panic) from [<802421dc>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<81953d4c>] (panic) from [<802421dc>] (get_taint+0x0/0x1c kernel/panic.c:236) r3:8260c5c4 r2:00000001 r1:81ff4238 r0:81ffc010 r7:8082588c [<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 r7:8205aee4 r6:dfa25a8c r5:83e41800 r4:00000000 [<80242438>] (warn_slowpath_fmt) from [<8082588c>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:515) r10:00000005 r9:84d4e000 r8:81a01c24 r7:820854b0 r6:828cf69c r5:dfa25b34 r4:8260cda4 [<808257c8>] (debug_print_object) from [<8082712c>] (__debug_check_no_obj_freed lib/debugobjects.c:990 [inline]) [<808257c8>] (debug_print_object) from [<8082712c>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1020) r8:84d4e800 r7:84d4e7cc r6:00000100 r5:00000003 r4:00000000 [<80826ed8>] (debug_check_no_obj_freed) from [<804bc4bc>] (slab_free_hook mm/slub.c:2219 [inline]) [<80826ed8>] (debug_check_no_obj_freed) from [<804bc4bc>] (slab_free mm/slub.c:4473 [inline]) [<80826ed8>] (debug_check_no_obj_freed) from [<804bc4bc>] (kfree+0x198/0x338 mm/slub.c:4594) r10:82778724 r9:84544480 r8:84d4e000 r7:80461518 r6:82c023c0 r5:ddea6e20 r4:84d4e000 [<804bc324>] (kfree) from [<80461518>] (kvfree+0x2c/0x30 mm/util.c:696) r10:82778724 r9:84544480 r8:84d4e000 r7:00000000 r6:84d36100 r5:84d7af80 r4:84d4e000 [<804614ec>] (kvfree) from [<814bc6e4>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) r5:84d7af80 r4:84d4e000 [<814bc6b8>] (netdev_release) from [<80a6c558>] (device_release+0x38/0xa8 drivers/base/core.c:2581) r5:84d7af80 r4:84d4e3c0 [<80a6c520>] (device_release) from [<8192d150>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a6c520>] (device_release) from [<8192d150>] (kobject_release lib/kobject.c:720 [inline]) [<80a6c520>] (device_release) from [<8192d150>] (kref_put include/linux/kref.h:65 [inline]) [<80a6c520>] (device_release) from [<8192d150>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b4b6cc r4:84d4e3c0 [<8192d088>] (kobject_put) from [<80a6c784>] (put_device+0x18/0x1c drivers/base/core.c:3787) r7:84545000 r6:84d4e10c r5:84d4e000 r4:00000000 [<80a6c76c>] (put_device) from [<81471674>] (free_netdev+0x114/0x18c net/core/dev.c:11196) [<81471560>] (free_netdev) from [<80d4e0b8>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84d4e794 r5:84d4e680 r4:00000000 [<80d4e00c>] (usbnet_disconnect) from [<80db5dc0>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:84545030 r6:82778724 r5:00000000 r4:84545000 [<80db5d3c>] (usb_unbind_interface) from [<80a7466c>] (device_remove drivers/base/dd.c:568 [inline]) [<80db5d3c>] (usb_unbind_interface) from [<80a7466c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:84544480 r8:00000044 r7:84545074 r6:82778724 r5:00000000 r4:84545030 [<80a74608>] (device_remove) from [<80a75b84>] (__device_release_driver drivers/base/dd.c:1272 [inline]) [<80a74608>] (device_remove) from [<80a75b84>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295) r5:00000000 r4:84545030 [<80a759f8>] (device_release_driver_internal) from [<80a75c10>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318) r9:84544480 r8:82f5ad40 r7:82f5ad38 r6:82f5ad0c r5:84545030 r4:82f5ad30 [<80a75bf8>] (device_release_driver) from [<80a73cf0>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a73c24>] (bus_remove_device) from [<80a6de08>] (device_del+0x148/0x38c drivers/base/core.c:3868) r9:84544480 r8:83e41800 r7:04208060 r6:00000000 r5:84545030 r4:84545074 [<80a6dcc0>] (device_del) from [<80db37dc>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:84545000 r7:84544400 r6:846e23c8 r5:00000001 r4:00000038 [<80db3700>] (usb_disable_device) from [<80da863c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:84723200 r8:845444c4 r7:83dcf800 r6:84544480 r5:84544400 r4:60000113 [<80da8550>] (usb_disconnect) from [<80dab2ec>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80da8550>] (usb_disconnect) from [<80dab2ec>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80da8550>] (usb_disconnect) from [<80dab2ec>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80da8550>] (usb_disconnect) from [<80dab2ec>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83c35b00 r7:84544400 r6:83dcf000 r5:83dcfa10 r4:00000001 [<80daa474>] (hub_event) from [<80265f1c>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r10:82e6ea05 r9:83e41800 r8:01800000 r7:ddde4000 r6:82e6ea00 r5:83c35b00 r4:84d7ac00 [<80265d68>] (process_one_work) from [<80266b00>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80265d68>] (process_one_work) from [<80266b00>] (worker_thread+0x1ec/0x3f4 kernel/workqueue.c:3390) r10:83e41800 r9:84d7ac2c r8:61c88647 r7:ddde4020 r6:82604d40 r5:ddde4000 r4:84d7ac00 [<80266914>] (worker_thread) from [<8026fb58>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:dfac9e78 r8:84c51980 r7:84d7ac00 r6:80266914 r5:83e41800 r4:84db0140 [<8026fa54>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfa25fb0 to 0xdfa25ff8) 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 r5:8026fa54 r4:84db0140 Rebooting in 86400 seconds..