dm9601 2-1:0.0 eth1: register 'dm9601' at usb-dummy_hcd.1-1, Davicom DM96xx USB 10/100 Ethernet, ca:41:47:be:7b:18 usb 2-1: USB disconnect, device number 25 dm9601 2-1:0.0 eth1: unregister 'dm9601' usb-dummy_hcd.1-1, Davicom DM96xx USB 10/100 Ethernet ------------[ cut here ]------------ WARNING: CPU: 0 PID: 19091 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 852217ac 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: 19091 Comm: kworker/0:3 Not tainted 6.9.0-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818c4ac8>] (dump_backtrace) from [<818c4bc4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e84 r5:00000000 r4:81fdf8dc [<818c4bac>] (show_stack) from [<818e1ef4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818c4bac>] (show_stack) from [<818e1ef4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818e1ea0>] (dump_stack_lvl) from [<818e1f34>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82860d18 [<818e1f1c>] (dump_stack) from [<818c566c>] (panic+0x120/0x358 kernel/panic.c:348) [<818c554c>] (panic) from [<802437c8>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818c554c>] (panic) from [<802437c8>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c5c4 r2:00000001 r1:81fc858c r0:81fd0188 r7:8081f590 [<80243754>] (check_panic_on_warn) from [<802439bc>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243940>] (__warn) from [<80243ca8>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:8202de58 r6:e09cda7c r5:8429ec00 r4:00000000 [<80243ac4>] (warn_slowpath_fmt) from [<8081f590>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:85221000 r8:81a02b44 r7:82056204 r6:828c449c r5:e09cdb24 r4:8260ce58 [<8081f4cc>] (debug_print_object) from [<80820e30>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8081f4cc>] (debug_print_object) from [<80820e30>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:85221800 r7:852217ac r6:00000100 r5:00000003 r4:00000000 [<80820bdc>] (debug_check_no_obj_freed) from [<804b60ac>] (slab_free_hook mm/slub.c:2088 [inline]) [<80820bdc>] (debug_check_no_obj_freed) from [<804b60ac>] (slab_free mm/slub.c:4353 [inline]) [<80820bdc>] (debug_check_no_obj_freed) from [<804b60ac>] (kfree+0x19c/0x33c mm/slub.c:4463) r10:82778950 r9:85195080 r8:85221000 r7:8045db18 r6:82c023c0 r5:ddeb1c80 r4:85221000 [<804b5f10>] (kfree) from [<8045db18>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82778950 r9:85195080 r8:85221000 r7:00000000 r6:84d19b40 r5:85395200 r4:85221000 [<8045daec>] (kvfree) from [<813f896c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10902) r5:85395200 r4:85221000 [<813f8950>] (netdev_freemem) from [<81434120>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<814340f4>] (netdev_release) from [<80a5705c>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:85395200 r4:852213b8 [<80a57024>] (device_release) from [<8189e9d8>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a57024>] (device_release) from [<8189e9d8>] (kobject_release lib/kobject.c:720 [inline]) [<80a57024>] (device_release) from [<8189e9d8>] (kref_put include/linux/kref.h:65 [inline]) [<80a57024>] (device_release) from [<8189e9d8>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b48d94 r4:852213b8 [<8189e910>] (kobject_put) from [<80a572e4>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:85195400 r6:8522110c r5:85221000 r4:00000000 [<80a572cc>] (put_device) from [<813e9afc>] (free_netdev+0x10c/0x18c net/core/dev.c:11099) [<813e99f0>] (free_netdev) from [<80d2a21c>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:85221774 r5:85221660 r4:00000000 [<80d2a170>] (usbnet_disconnect) from [<80d888f8>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:85195430 r6:82778950 r5:00000000 r4:85195400 [<80d88874>] (usb_unbind_interface) from [<80a5f12c>] (device_remove drivers/base/dd.c:568 [inline]) [<80d88874>] (usb_unbind_interface) from [<80a5f12c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:85195080 r9:828f4d44 r8:00000044 r7:85195474 r6:82778950 r5:00000000 r4:85195430 [<80a5f0c8>] (device_remove) from [<80a60644>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a5f0c8>] (device_remove) from [<80a60644>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:85195430 [<80a604b8>] (device_release_driver_internal) from [<80a606d0>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828f4d44 r8:82ec6b40 r7:82ec6b38 r6:82ec6b0c r5:85195430 r4:82ec6b30 [<80a606b8>] (device_release_driver) from [<80a5e7d0>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a5e704>] (bus_remove_device) from [<80a58860>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828f4d44 r8:85195400 r7:8429ec00 r6:855fddc8 r5:04208060 r4:85195430 [<80a58704>] (device_del) from [<80d8635c>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:85195400 r7:85195000 r6:855fddc8 r5:00000002 r4:00000070 [<80d86280>] (usb_disable_device) from [<80d7b1cc>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:8371b800 r8:851950c4 r7:83d5b400 r6:85195080 r5:85195000 r4:60000013 [<80d7b0e0>] (usb_disconnect) from [<80d7de7c>] (hub_port_connect drivers/usb/core/hub.c:5362 [inline]) [<80d7b0e0>] (usb_disconnect) from [<80d7de7c>] (hub_port_connect_change drivers/usb/core/hub.c:5662 [inline]) [<80d7b0e0>] (usb_disconnect) from [<80d7de7c>] (port_event drivers/usb/core/hub.c:5822 [inline]) [<80d7b0e0>] (usb_disconnect) from [<80d7de7c>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5904) r10:00000001 r9:00000100 r8:83a8ab00 r7:85195000 r6:83d5ac00 r5:83d5b610 r4:00000001 [<80d7d004>] (hub_event) from [<802669bc>] (process_one_work+0x1b8/0x504 kernel/workqueue.c:3267) r10:82fca205 r9:8429ec00 r8:00000080 r7:dddd00c0 r6:82fca200 r5:83a8ab00 r4:855c5680 [<80266804>] (process_one_work) from [<802676dc>] (process_scheduled_works kernel/workqueue.c:3348 [inline]) [<80266804>] (process_one_work) from [<802676dc>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3429) r10:8429ec00 r9:855c56ac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:855c5680 [<802674f0>] (worker_thread) from [<802700ec>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:e0781e90 r8:84faff40 r7:855c5680 r6:802674f0 r5:8429ec00 r4:8534e240 [<8026ffe8>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xe09cdfb0 to 0xe09cdff8) 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 r5:8026ffe8 r4:8534e240 Rebooting in 86400 seconds..