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 75 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: 3994 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 841487ac 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: 3994 Comm: kworker/0:17 Not tainted 6.9.0-rc7-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818a33dc>] (dump_backtrace) from [<818a34d8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fcefb4 [<818a34c0>] (show_stack) from [<818c0c14>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818a34c0>] (show_stack) from [<818c0c14>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818c0bc0>] (dump_stack_lvl) from [<818c0c54>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285ad18 [<818c0c3c>] (dump_stack) from [<818a3f80>] (panic+0x120/0x358 kernel/panic.c:348) [<818a3e60>] (panic) from [<802436ac>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818a3e60>] (panic) from [<802436ac>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fb7cf4 r0:81fbf898 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 r7:8201b8c4 r6:e0ab5a7c r5:84169800 r4:00000000 [<802439a8>] (warn_slowpath_fmt) from [<8080ac38>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84148000 r8:81a02b44 r7:82043874 r6:828be454 r5:e0ab5b24 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) r8:84148800 r7:841487ac r6:00000100 r5:00000003 r4:00000000 [<8080c27c>] (debug_check_no_obj_freed) from [<804b2fdc>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080c27c>] (debug_check_no_obj_freed) from [<804b2fdc>] (slab_free mm/slub.c:4286 [inline]) [<8080c27c>] (debug_check_no_obj_freed) from [<804b2fdc>] (kfree+0x1a0/0x340 mm/slub.c:4396) r10:82775a48 r9:82c96c80 r8:84148000 r7:8045aca4 r6:82c023c0 r5:dde8be20 r4:84148000 [<804b2e3c>] (kfree) from [<8045aca4>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a48 r9:82c96c80 r8:84148000 r7:00000000 r6:82f48ec0 r5:84feec80 r4:84148000 [<8045ac78>] (kvfree) from [<813dd498>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10803) r5:84feec80 r4:84148000 [<813dd47c>] (netdev_freemem) from [<81418558>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<8141852c>] (netdev_release) from [<80a412f0>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:84feec80 r4:841483b8 [<80a412b8>] (device_release) from [<8187d340>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a412b8>] (device_release) from [<8187d340>] (kobject_release lib/kobject.c:720 [inline]) [<80a412b8>] (device_release) from [<8187d340>] (kref_put include/linux/kref.h:65 [inline]) [<80a412b8>] (device_release) from [<8187d340>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b48984 r4:841483b8 [<8187d278>] (kobject_put) from [<80a41578>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:83e6a000 r6:8414810c r5:84148000 r4:00000000 [<80a41560>] (put_device) from [<813ce780>] (free_netdev+0x108/0x188 net/core/dev.c:10999) [<813ce678>] (free_netdev) from [<80d12090>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84148774 r5:84148660 r4:00000000 [<80d11fe4>] (usbnet_disconnect) from [<80d6d184>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:83e6a030 r6:82775a48 r5:00000000 r4:83e6a000 [<80d6d100>] (usb_unbind_interface) from [<80a493cc>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6d100>] (usb_unbind_interface) from [<80a493cc>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:82c96c80 r9:828eecfc r8:00000044 r7:83e6a074 r6:82775a48 r5:00000000 r4:83e6a030 [<80a49368>] (device_remove) from [<80a4a8e4>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a49368>] (device_remove) from [<80a4a8e4>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:83e6a030 [<80a4a758>] (device_release_driver_internal) from [<80a4a970>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eecfc r8:82f4fc40 r7:82f4fc38 r6:82f4fc0c r5:83e6a030 r4:82f4fc30 [<80a4a958>] (device_release_driver) from [<80a48a70>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a489a4>] (bus_remove_device) from [<80a42af4>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828eecfc r8:83e6a000 r7:84169800 r6:85217ac8 r5:04208060 r4:83e6a030 [<80a42998>] (device_del) from [<80d6abe0>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:83e6a000 r7:82c96c00 r6:85217ac8 r5:00000001 r4:00000038 [<80d6ab04>] (usb_disable_device) from [<80d5fa4c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:82e5a800 r8:82c96cc4 r7:83e44c00 r6:82c96c80 r5:82c96c00 r4:60000013 [<80d5f960>] (usb_disconnect) from [<80d626fc>] (hub_port_connect drivers/usb/core/hub.c:5362 [inline]) [<80d5f960>] (usb_disconnect) from [<80d626fc>] (hub_port_connect_change drivers/usb/core/hub.c:5662 [inline]) [<80d5f960>] (usb_disconnect) from [<80d626fc>] (port_event drivers/usb/core/hub.c:5822 [inline]) [<80d5f960>] (usb_disconnect) from [<80d626fc>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5904) r10:00000001 r9:00000100 r8:837e4900 r7:82c96c00 r6:83e44400 r5:83e44e10 r4:00000001 [<80d61884>] (hub_event) from [<80266868>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3267) r10:82e65805 r9:84169800 r8:00000080 r7:dddd00c0 r6:82e65800 r5:837e4900 r4:84ff5000 [<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) r10:84169800 r9:84ff502c r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:84ff5000 [<802673a0>] (worker_thread) from [<802702a0>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:e0019e90 r8:85103d00 r7:84ff5000 r6:802673a0 r5:84169800 r4:85103440 [<8027019c>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xe0ab5fb0 to 0xe0ab5ff8) 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 r5:8027019c r4:85103440 Rebooting in 86400 seconds..