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 3 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: 9 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 84fa27ac 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: 9 Comm: kworker/0:1 Not tainted 6.9.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818a1f3c>] (dump_backtrace) from [<818a2038>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fceddc [<818a2020>] (show_stack) from [<818bf774>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818a2020>] (show_stack) from [<818bf774>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818bf720>] (dump_stack_lvl) from [<818bf7b4>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285ad18 [<818bf79c>] (dump_stack) from [<818a2ae0>] (panic+0x120/0x358 kernel/panic.c:348) [<818a29c0>] (panic) from [<802438ec>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818a29c0>] (panic) from [<802438ec>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fb7b08 r0:81fbf6ac r7:8080a360 [<80243878>] (check_panic_on_warn) from [<80243ae0>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243a64>] (__warn) from [<80243dcc>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:8201b6ec r6:df83da7c r5:82e2e000 r4:00000000 [<80243be8>] (warn_slowpath_fmt) from [<8080a360>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84fa2000 r8:81a02b44 r7:82043674 r6:828be454 r5:df83db24 r4:8260ce18 [<8080a29c>] (debug_print_object) from [<8080bbf8>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080a29c>] (debug_print_object) from [<8080bbf8>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:84fa2800 r7:84fa27ac r6:00000100 r5:00000003 r4:00000000 [<8080b9a4>] (debug_check_no_obj_freed) from [<804b2b14>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080b9a4>] (debug_check_no_obj_freed) from [<804b2b14>] (slab_free mm/slub.c:4280 [inline]) [<8080b9a4>] (debug_check_no_obj_freed) from [<804b2b14>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a48 r9:84ef4c80 r8:84fa2000 r7:8045a8ec r6:82c023c0 r5:ddeac280 r4:84fa2000 [<804b2974>] (kfree) from [<8045a8ec>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a48 r9:84ef4c80 r8:84fa2000 r7:00000000 r6:850f71c0 r5:850eea00 r4:84fa2000 [<8045a8c0>] (kvfree) from [<813dc170>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10803) r5:850eea00 r4:84fa2000 [<813dc154>] (netdev_freemem) from [<814171dc>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<814171b0>] (netdev_release) from [<80a40a10>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:850eea00 r4:84fa23b8 [<80a409d8>] (device_release) from [<8187bea0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a409d8>] (device_release) from [<8187bea0>] (kobject_release lib/kobject.c:720 [inline]) [<80a409d8>] (device_release) from [<8187bea0>] (kref_put include/linux/kref.h:65 [inline]) [<80a409d8>] (device_release) from [<8187bea0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b48984 r4:84fa23b8 [<8187bdd8>] (kobject_put) from [<80a40c98>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:84ef5800 r6:84fa210c r5:84fa2000 r4:00000000 [<80a40c80>] (put_device) from [<813cd458>] (free_netdev+0x108/0x188 net/core/dev.c:10999) [<813cd350>] (free_netdev) from [<80d11118>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84fa2774 r5:84fa2660 r4:00000000 [<80d1106c>] (usbnet_disconnect) from [<80d6c1fc>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:84ef5830 r6:82775a48 r5:00000000 r4:84ef5800 [<80d6c178>] (usb_unbind_interface) from [<80a48aec>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6c178>] (usb_unbind_interface) from [<80a48aec>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:84ef4c80 r9:828eecfc r8:00000044 r7:84ef5874 r6:82775a48 r5:00000000 r4:84ef5830 [<80a48a88>] (device_remove) from [<80a4a004>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a48a88>] (device_remove) from [<80a4a004>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:84ef5830 [<80a49e78>] (device_release_driver_internal) from [<80a4a090>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eecfc r8:82eaca40 r7:82eaca38 r6:82eaca0c r5:84ef5830 r4:82eaca30 [<80a4a078>] (device_release_driver) from [<80a48190>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a480c4>] (bus_remove_device) from [<80a42214>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828eecfc r8:84ef5800 r7:82e2e000 r6:85109648 r5:04208060 r4:84ef5830 [<80a420b8>] (device_del) from [<80d69c58>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:84ef5800 r7:84ef4c00 r6:85109648 r5:00000001 r4:00000038 [<80d69b7c>] (usb_disable_device) from [<80d5eac4>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:84ca5200 r8:84ef4cc4 r7:83ec5000 r6:84ef4c80 r5:84ef4c00 r4:60000013 [<80d5e9d8>] (usb_disconnect) from [<80d61774>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d5e9d8>] (usb_disconnect) from [<80d61774>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d5e9d8>] (usb_disconnect) from [<80d61774>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d5e9d8>] (usb_disconnect) from [<80d61774>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:837e9b00 r7:84ef4c00 r6:83ec4800 r5:83ec5210 r4:00000001 [<80d608fc>] (hub_event) from [<802665ec>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82fc9405 r9:82e2e000 r8:00000080 r7:dddd00c0 r6:82fc9400 r5:837e9b00 r4:82c0bf80 [<80266434>] (process_one_work) from [<80267310>] (process_scheduled_works kernel/workqueue.c:3335 [inline]) [<80266434>] (process_one_work) from [<80267310>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3416) r10:82e2e000 r9:82c0bfac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:82c0bf80 [<80267124>] (worker_thread) from [<80270024>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df835e90 r8:82cada00 r7:82c0bf80 r6:80267124 r5:82e2e000 r4:82cad800 [<8026ff20>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf83dfb0 to 0xdf83dff8) 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 r5:8026ff20 r4:82cad800 Rebooting in 86400 seconds..