dm9601 1-1:0.0 eth1: unregister 'dm9601' usb-dummy_hcd.0-1, Davicom DM96xx USB 10/100 Ethernet ------------[ cut here ]------------ WARNING: CPU: 0 PID: 14673 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: a209d7ac 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: 14673 Comm: kworker/0:3 Not tainted 6.9.0-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818cb288>] (dump_backtrace) from [<818cb384>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e84 r5:00000000 r4:81fe2460 [<818cb36c>] (show_stack) from [<818e89b4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818cb36c>] (show_stack) from [<818e89b4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818e8960>] (dump_stack_lvl) from [<818e89f4>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82861d18 [<818e89dc>] (dump_stack) from [<818cbe2c>] (panic+0x120/0x358 kernel/panic.c:348) [<818cbd0c>] (panic) from [<80243710>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818cbd0c>] (panic) from [<80243710>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c5c4 r2:00000001 r1:81fcb060 r0:81fd2c5c r7:80821288 [<8024369c>] (check_panic_on_warn) from [<80243904>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243888>] (__warn) from [<80243bf0>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:82030b5c r6:ee845a7c r5:836cbc00 r4:00000000 [<80243a0c>] (warn_slowpath_fmt) from [<80821288>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:a209d000 r8:81a02b44 r7:82059c6c r6:828c549c r5:ee845b24 r4:8260ce58 [<808211c4>] (debug_print_object) from [<80822b28>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<808211c4>] (debug_print_object) from [<80822b28>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:a209d800 r7:a209d7ac r6:00000100 r5:00000003 r4:00000000 [<808228d4>] (debug_check_no_obj_freed) from [<804b760c>] (slab_free_hook mm/slub.c:2088 [inline]) [<808228d4>] (debug_check_no_obj_freed) from [<804b760c>] (slab_free mm/slub.c:4353 [inline]) [<808228d4>] (debug_check_no_obj_freed) from [<804b760c>] (kfree+0x19c/0x33c mm/slub.c:4463) r10:82778d28 r9:85308080 r8:a209d000 r7:8045f088 r6:82c023c0 r5:de2c2560 r4:a209d000 [<804b7470>] (kfree) from [<8045f088>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82778d28 r9:85308080 r8:a209d000 r7:00000000 r6:855c7bc0 r5:84af4e80 r4:a209d000 [<8045f05c>] (kvfree) from [<813fefcc>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10902) r5:84af4e80 r4:a209d000 [<813fefb0>] (netdev_freemem) from [<8143a784>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<8143a758>] (netdev_release) from [<80a5aca8>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:84af4e80 r4:a209d3b8 [<80a5ac70>] (device_release) from [<818a5198>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a5ac70>] (device_release) from [<818a5198>] (kobject_release lib/kobject.c:720 [inline]) [<80a5ac70>] (device_release) from [<818a5198>] (kref_put include/linux/kref.h:65 [inline]) [<80a5ac70>] (device_release) from [<818a5198>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b4939c r4:a209d3b8 [<818a50d0>] (kobject_put) from [<80a5af30>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:85308400 r6:a209d10c r5:a209d000 r4:00000000 [<80a5af18>] (put_device) from [<813f015c>] (free_netdev+0x10c/0x18c net/core/dev.c:11099) [<813f0050>] (free_netdev) from [<80d2e068>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:a209d774 r5:a209d660 r4:00000000 [<80d2dfbc>] (usbnet_disconnect) from [<80d8c7b4>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:85308430 r6:82778d28 r5:00000000 r4:85308400 [<80d8c730>] (usb_unbind_interface) from [<80a62d74>] (device_remove drivers/base/dd.c:568 [inline]) [<80d8c730>] (usb_unbind_interface) from [<80a62d74>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:85308080 r9:828f5d44 r8:00000044 r7:85308474 r6:82778d28 r5:00000000 r4:85308430 [<80a62d10>] (device_remove) from [<80a6428c>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a62d10>] (device_remove) from [<80a6428c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:85308430 [<80a64100>] (device_release_driver_internal) from [<80a64318>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828f5d44 r8:82f31140 r7:82f31138 r6:82f3110c r5:85308430 r4:82f31130 [<80a64300>] (device_release_driver) from [<80a6241c>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a62350>] (bus_remove_device) from [<80a5c4ac>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828f5d44 r8:85308400 r7:836cbc00 r6:85151008 r5:04208060 r4:85308430 [<80a5c350>] (device_del) from [<80d8a20c>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:85308400 r7:85308000 r6:85151008 r5:00000002 r4:00000070 [<80d8a130>] (usb_disable_device) from [<80d7f06c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:853eac00 r8:853080c4 r7:83e9cc00 r6:85308080 r5:85308000 r4:60000013 [<80d7ef80>] (usb_disconnect) from [<80d81d1c>] (hub_port_connect drivers/usb/core/hub.c:5362 [inline]) [<80d7ef80>] (usb_disconnect) from [<80d81d1c>] (hub_port_connect_change drivers/usb/core/hub.c:5662 [inline]) [<80d7ef80>] (usb_disconnect) from [<80d81d1c>] (port_event drivers/usb/core/hub.c:5822 [inline]) [<80d7ef80>] (usb_disconnect) from [<80d81d1c>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5904) r10:00000001 r9:00000100 r8:83d85b00 r7:85308000 r6:83e9c400 r5:83e9ce10 r4:00000001 [<80d80ea4>] (hub_event) from [<802664dc>] (process_one_work+0x1c4/0x510 kernel/workqueue.c:3231) r10:82e63e05 r9:836cbc00 r8:00800000 r7:dddd00c0 r6:82e63e00 r5:83d85b00 r4:846efb80 [<80266318>] (process_one_work) from [<80267110>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80266318>] (process_one_work) from [<80267110>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3393) r10:836cbc00 r9:846efbac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:846efb80 [<80266f24>] (worker_thread) from [<80270538>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df91de90 r8:848d46c0 r7:846efb80 r6:80266f24 r5:836cbc00 r4:848d4340 [<80270434>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xee845fb0 to 0xee845ff8) 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 r5:80270434 r4:848d4340 Rebooting in 86400 seconds..