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 9 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: 7 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 85162fac 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: 7 Comm: kworker/0:0 Not tainted 6.9.0-rc4-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818a18bc>] (dump_backtrace) from [<818a19b8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fcea10 [<818a19a0>] (show_stack) from [<818bf0f0>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818a19a0>] (show_stack) from [<818bf0f0>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818bf09c>] (dump_stack_lvl) from [<818bf130>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285ad18 [<818bf118>] (dump_stack) from [<818a2460>] (panic+0x120/0x358 kernel/panic.c:348) [<818a2340>] (panic) from [<8024390c>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818a2340>] (panic) from [<8024390c>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fb773c r0:81fbf2e0 r7:8080a0d0 [<80243898>] (check_panic_on_warn) from [<80243b00>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243a84>] (__warn) from [<80243dec>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:8201b320 r6:df835a7c r5:82e2c800 r4:00000000 [<80243c08>] (warn_slowpath_fmt) from [<8080a0d0>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:85162800 r8:81a02b44 r7:82043274 r6:828be454 r5:df835b24 r4:8260ce18 [<8080a00c>] (debug_print_object) from [<8080b968>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080a00c>] (debug_print_object) from [<8080b968>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:85163000 r7:85162fac r6:00000100 r5:00000003 r4:00000000 [<8080b714>] (debug_check_no_obj_freed) from [<804b2820>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080b714>] (debug_check_no_obj_freed) from [<804b2820>] (slab_free mm/slub.c:4280 [inline]) [<8080b714>] (debug_check_no_obj_freed) from [<804b2820>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a38 r9:84e84480 r8:85162800 r7:8045a920 r6:82c023c0 r5:ddeb0180 r4:85162800 [<804b2680>] (kfree) from [<8045a920>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a38 r9:84e84480 r8:85162800 r7:00000000 r6:84ecd140 r5:84ddc480 r4:85162800 [<8045a8f4>] (kvfree) from [<813dbb0c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797) r5:84ddc480 r4:85162800 [<813dbaf0>] (netdev_freemem) from [<81416b74>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<81416b48>] (netdev_release) from [<80a404e0>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:84ddc480 r4:85162bb8 [<80a404a8>] (device_release) from [<8187b820>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a404a8>] (device_release) from [<8187b820>] (kobject_release lib/kobject.c:720 [inline]) [<80a404a8>] (device_release) from [<8187b820>] (kref_put include/linux/kref.h:65 [inline]) [<80a404a8>] (device_release) from [<8187b820>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b489c4 r4:85162bb8 [<8187b758>] (kobject_put) from [<80a40768>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:84e84800 r6:8516290c r5:85162800 r4:00000000 [<80a40750>] (put_device) from [<813cce58>] (free_netdev+0x108/0x188 net/core/dev.c:10993) [<813ccd50>] (free_netdev) from [<80d10be0>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:85162f74 r5:85162e60 r4:00000000 [<80d10b34>] (usbnet_disconnect) from [<80d6bcc4>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:84e84830 r6:82775a38 r5:00000000 r4:84e84800 [<80d6bc40>] (usb_unbind_interface) from [<80a485bc>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6bc40>] (usb_unbind_interface) from [<80a485bc>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:84e84480 r9:828eecf4 r8:00000044 r7:84e84874 r6:82775a38 r5:00000000 r4:84e84830 [<80a48558>] (device_remove) from [<80a49ad4>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a48558>] (device_remove) from [<80a49ad4>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:84e84830 [<80a49948>] (device_release_driver_internal) from [<80a49b60>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eecf4 r8:82f50b40 r7:82f50b38 r6:82f50b0c r5:84e84830 r4:82f50b30 [<80a49b48>] (device_release_driver) from [<80a47c60>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a47b94>] (bus_remove_device) from [<80a41ce4>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828eecf4 r8:84e84800 r7:82e2c800 r6:85105fc8 r5:04208060 r4:84e84830 [<80a41b88>] (device_del) from [<80d69720>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:84e84800 r7:84e84400 r6:85105fc8 r5:00000001 r4:00000038 [<80d69644>] (usb_disable_device) from [<80d5e58c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:84c59800 r8:84e844c4 r7:82fb6800 r6:84e84480 r5:84e84400 r4:60000013 [<80d5e4a0>] (usb_disconnect) from [<80d6123c>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d5e4a0>] (usb_disconnect) from [<80d6123c>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d5e4a0>] (usb_disconnect) from [<80d6123c>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d5e4a0>] (usb_disconnect) from [<80d6123c>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83797300 r7:84e84400 r6:82fb6000 r5:82fb6a10 r4:00000001 [<80d603c4>] (hub_event) from [<8026660c>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82e65805 r9:82e2c800 r8:00000080 r7:dddd00c0 r6:82e65800 r5:83797300 r4:82c0be80 [<80266454>] (process_one_work) from [<80267330>] (process_scheduled_works kernel/workqueue.c:3335 [inline]) [<80266454>] (process_one_work) from [<80267330>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3416) r10:82e2c800 r9:82c0beac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:82c0be80 [<80267144>] (worker_thread) from [<80270044>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df819e60 r8:82cad740 r7:82c0be80 r6:80267144 r5:82e2c800 r4:82cad140 [<8026ff40>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf835fb0 to 0xdf835ff8) 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 r5:8026ff40 r4:82cad140 Rebooting in 86400 seconds..