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 32 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: 5812 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 847d97ac 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 PID: 5812 Comm: kworker/1:20 Not tainted 6.9.0-rc7-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818a3220>] (dump_backtrace) from [<818a331c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fcf024 [<818a3304>] (show_stack) from [<818c0a54>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818a3304>] (show_stack) from [<818c0a54>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818c0a00>] (dump_stack_lvl) from [<818c0a94>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285ad18 [<818c0a7c>] (dump_stack) from [<818a3dc4>] (panic+0x120/0x358 kernel/panic.c:348) [<818a3ca4>] (panic) from [<802436ac>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818a3ca4>] (panic) from [<802436ac>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fb7d64 r0:81fbf908 r7:8080ac38 [<80243638>] (check_panic_on_warn) from [<802438a0>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243824>] (__warn) from [<80243b8c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:8201b934 r6:dfabda7c r5:836fbc00 r4:00000000 [<802439a8>] (warn_slowpath_fmt) from [<8080ac38>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:847d9000 r8:81a02b44 r7:820438e8 r6:828be454 r5:dfabdb24 r4:8260ce18 [<8080ab74>] (debug_print_object) from [<8080c4d0>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080ab74>] (debug_print_object) from [<8080c4d0>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:847d9800 r7:847d97ac r6:00000100 r5:00000003 r4:00000000 [<8080c27c>] (debug_check_no_obj_freed) from [<804b2f68>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080c27c>] (debug_check_no_obj_freed) from [<804b2f68>] (slab_free mm/slub.c:4286 [inline]) [<8080c27c>] (debug_check_no_obj_freed) from [<804b2f68>] (kfree+0x1a0/0x340 mm/slub.c:4396) r10:82775a48 r9:8513d480 r8:847d9000 r7:8045ac9c r6:82c023c0 r5:dde9aa60 r4:847d9000 [<804b2dc8>] (kfree) from [<8045ac9c>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a48 r9:8513d480 r8:847d9000 r7:00000000 r6:850940c0 r5:8451ed00 r4:847d9000 [<8045ac70>] (kvfree) from [<813dce44>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10803) r5:8451ed00 r4:847d9000 [<813dce28>] (netdev_freemem) from [<81417f00>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<81417ed4>] (netdev_release) from [<80a40d30>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:8451ed00 r4:847d93b8 [<80a40cf8>] (device_release) from [<8187d100>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a40cf8>] (device_release) from [<8187d100>] (kobject_release lib/kobject.c:720 [inline]) [<80a40cf8>] (device_release) from [<8187d100>] (kref_put include/linux/kref.h:65 [inline]) [<80a40cf8>] (device_release) from [<8187d100>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b48984 r4:847d93b8 [<8187d038>] (kobject_put) from [<80a40fb8>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:8513e000 r6:847d910c r5:847d9000 r4:00000000 [<80a40fa0>] (put_device) from [<813ce12c>] (free_netdev+0x108/0x188 net/core/dev.c:10999) [<813ce024>] (free_netdev) from [<80d11a40>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:847d9774 r5:847d9660 r4:00000000 [<80d11994>] (usbnet_disconnect) from [<80d6cb34>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8513e030 r6:82775a48 r5:00000000 r4:8513e000 [<80d6cab0>] (usb_unbind_interface) from [<80a48e0c>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6cab0>] (usb_unbind_interface) from [<80a48e0c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:8513d480 r9:828eecfc r8:00000044 r7:8513e074 r6:82775a48 r5:00000000 r4:8513e030 [<80a48da8>] (device_remove) from [<80a4a324>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a48da8>] (device_remove) from [<80a4a324>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:8513e030 [<80a4a198>] (device_release_driver_internal) from [<80a4a3b0>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eecfc r8:82f52b40 r7:82f52b38 r6:82f52b0c r5:8513e030 r4:82f52b30 [<80a4a398>] (device_release_driver) from [<80a484b0>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a483e4>] (bus_remove_device) from [<80a42534>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828eecfc r8:8513e000 r7:836fbc00 r6:85043dc8 r5:04208060 r4:8513e030 [<80a423d8>] (device_del) from [<80d6a590>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8513e000 r7:8513d400 r6:85043dc8 r5:00000001 r4:00000038 [<80d6a4b4>] (usb_disable_device) from [<80d5f3fc>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:84525800 r8:8513d4c4 r7:83411000 r6:8513d480 r5:8513d400 r4:60000013 [<80d5f310>] (usb_disconnect) from [<80d620ac>] (hub_port_connect drivers/usb/core/hub.c:5362 [inline]) [<80d5f310>] (usb_disconnect) from [<80d620ac>] (hub_port_connect_change drivers/usb/core/hub.c:5662 [inline]) [<80d5f310>] (usb_disconnect) from [<80d620ac>] (port_event drivers/usb/core/hub.c:5822 [inline]) [<80d5f310>] (usb_disconnect) from [<80d620ac>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5904) r10:00000001 r9:00000100 r8:82e73900 r7:8513d400 r6:83410800 r5:83411210 r4:00000001 [<80d61234>] (hub_event) from [<80266868>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3267) r10:82e65a05 r9:836fbc00 r8:00000180 r7:ddde40c0 r6:82e65a00 r5:82e73900 r4:8522c000 [<802666b0>] (process_one_work) from [<8026758c>] (process_scheduled_works kernel/workqueue.c:3348 [inline]) [<802666b0>] (process_one_work) from [<8026758c>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3429) r10:836fbc00 r9:8522c02c r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:8522c000 [<802673a0>] (worker_thread) from [<802702a0>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df9f5e90 r8:85221040 r7:8522c000 r6:802673a0 r5:836fbc00 r4:85221000 [<8027019c>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfabdfb0 to 0xdfabdff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027019c r4:85221000 Rebooting in 86400 seconds..