dm9601 2-1:0.0 eth1: register 'dm9601' at usb-dummy_hcd.1-1, Davicom DM96xx USB 10/100 Ethernet, e4:9f:1c:17:d6:18 usb 2-1: USB disconnect, device number 8 dm9601 2-1:0.0 eth1: unregister 'dm9601' usb-dummy_hcd.1-1, Davicom DM96xx USB 10/100 Ethernet ------------[ cut here ]------------ WARNING: CPU: 1 PID: 10137 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 848eafac 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: 10137 Comm: kworker/1:7 Not tainted 6.9.0-rc2-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<8187abbc>] (dump_backtrace) from [<8187acb8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fc4b04 [<8187aca0>] (show_stack) from [<818983e0>] (__dump_stack lib/dump_stack.c:88 [inline]) [<8187aca0>] (show_stack) from [<818983e0>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<8189838c>] (dump_stack_lvl) from [<81898420>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82858d18 [<81898408>] (dump_stack) from [<8187b760>] (panic+0x120/0x358 kernel/panic.c:348) [<8187b640>] (panic) from [<8024390c>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<8187b640>] (panic) from [<8024390c>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fad788 r0:81fb5330 r7:8080bb38 [<80243898>] (check_panic_on_warn) from [<80243b00>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243a84>] (__warn) from [<80243dec>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:82011734 r6:dfce1a7c r5:84199800 r4:00000000 [<80243c08>] (warn_slowpath_fmt) from [<8080bb38>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:848ea800 r8:81a02b44 r7:82039688 r6:828bc414 r5:dfce1b24 r4:8260ce18 [<8080ba74>] (debug_print_object) from [<8080d3d0>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080ba74>] (debug_print_object) from [<8080d3d0>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:848eb000 r7:848eafac r6:00000100 r5:00000003 r4:00000000 [<8080d17c>] (debug_check_no_obj_freed) from [<804b2848>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080d17c>] (debug_check_no_obj_freed) from [<804b2848>] (slab_free mm/slub.c:4280 [inline]) [<8080d17c>] (debug_check_no_obj_freed) from [<804b2848>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775110 r9:84a87080 r8:848ea800 r7:8045a948 r6:82c023c0 r5:dde9d0a0 r4:848ea800 [<804b26a8>] (kfree) from [<8045a948>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775110 r9:84a87080 r8:848ea800 r7:00000000 r6:8506c100 r5:84b73c00 r4:848ea800 [<8045a91c>] (kvfree) from [<813b4e04>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797) r5:84b73c00 r4:848ea800 [<813b4de8>] (netdev_freemem) from [<813efe6c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<813efe40>] (netdev_release) from [<80a41f48>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:84b73c00 r4:848eabb8 [<80a41f10>] (device_release) from [<81854b20>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a41f10>] (device_release) from [<81854b20>] (kobject_release lib/kobject.c:720 [inline]) [<80a41f10>] (device_release) from [<81854b20>] (kref_put include/linux/kref.h:65 [inline]) [<80a41f10>] (device_release) from [<81854b20>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b485c4 r4:848eabb8 [<81854a58>] (kobject_put) from [<80a421d0>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:84a86c00 r6:848ea90c r5:848ea800 r4:00000000 [<80a421b8>] (put_device) from [<813a6150>] (free_netdev+0x108/0x188 net/core/dev.c:10993) [<813a6048>] (free_netdev) from [<80d11cc0>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:848eaf74 r5:848eae60 r4:00000000 [<80d11c14>] (usbnet_disconnect) from [<80d6cda4>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:84a86c30 r6:82775110 r5:00000000 r4:84a86c00 [<80d6cd20>] (usb_unbind_interface) from [<80a4a024>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6cd20>] (usb_unbind_interface) from [<80a4a024>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:84a87080 r9:828eccc4 r8:00000044 r7:84a86c74 r6:82775110 r5:00000000 r4:84a86c30 [<80a49fc0>] (device_remove) from [<80a4b53c>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a49fc0>] (device_remove) from [<80a4b53c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:84a86c30 [<80a4b3b0>] (device_release_driver_internal) from [<80a4b5c8>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eccc4 r8:82f51b40 r7:82f51b38 r6:82f51b0c r5:84a86c30 r4:82f51b30 [<80a4b5b0>] (device_release_driver) from [<80a496c8>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a495fc>] (bus_remove_device) from [<80a4374c>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828eccc4 r8:84a86c00 r7:84199800 r6:84ae1b88 r5:04208060 r4:84a86c30 [<80a435f0>] (device_del) from [<80d6a800>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:84a86c00 r7:84a87000 r6:84ae1b88 r5:00000002 r4:00000070 [<80d6a724>] (usb_disable_device) from [<80d5f66c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:85a2fa00 r8:84a870c4 r7:83dae000 r6:84a87080 r5:84a87000 r4:60000013 [<80d5f580>] (usb_disconnect) from [<80d6231c>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d5f580>] (usb_disconnect) from [<80d6231c>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d5f580>] (usb_disconnect) from [<80d6231c>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d5f580>] (usb_disconnect) from [<80d6231c>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83823900 r7:84a87000 r6:83dad800 r5:83dae210 r4:00000001 [<80d614a4>] (hub_event) from [<8026660c>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82e65a05 r9:84199800 r8:00000180 r7:ddde40c0 r6:82e65a00 r5:83823900 r4:85079680 [<80266454>] (process_one_work) from [<80267330>] (process_scheduled_works kernel/workqueue.c:3335 [inline]) [<80266454>] (process_one_work) from [<80267330>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3416) r10:84199800 r9:850796ac r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:85079680 [<80267144>] (worker_thread) from [<80270044>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:dfc39e90 r8:8582b3c0 r7:85079680 r6:80267144 r5:84199800 r4:8582b200 [<8026ff40>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfce1fb0 to 0xdfce1ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026ff40 r4:8582b200 Rebooting in 86400 seconds..