usb 2-1: USB disconnect, device number 109 cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.1-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 16301 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 84dbb7ac 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: 16301 Comm: kworker/1:2 Not tainted 6.9.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<81879f5c>] (dump_backtrace) from [<8187a058>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fc4844 [<8187a040>] (show_stack) from [<818977f4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<8187a040>] (show_stack) from [<818977f4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818977a0>] (dump_stack_lvl) from [<81897834>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82858d18 [<8189781c>] (dump_stack) from [<8187ab00>] (panic+0x120/0x358 kernel/panic.c:348) [<8187a9e0>] (panic) from [<8024390c>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<8187a9e0>] (panic) from [<8024390c>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fad4c8 r0:81fb5070 r7:8080ba28 [<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 r7:82011468 r6:dfa79a7c r5:84794800 r4:00000000 [<80243c08>] (warn_slowpath_fmt) from [<8080ba28>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84dbb000 r8:81a02b44 r7:820393bc r6:828bc414 r5:dfa79b24 r4:8260ce18 [<8080b964>] (debug_print_object) from [<8080d2c0>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080b964>] (debug_print_object) from [<8080d2c0>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:84dbb800 r7:84dbb7ac r6:00000100 r5:00000003 r4:00000000 [<8080d06c>] (debug_check_no_obj_freed) from [<804b26b0>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080d06c>] (debug_check_no_obj_freed) from [<804b26b0>] (slab_free mm/slub.c:4280 [inline]) [<8080d06c>] (debug_check_no_obj_freed) from [<804b26b0>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a08 r9:845e2880 r8:84dbb000 r7:8045a848 r6:82c023c0 r5:ddea7de0 r4:84dbb000 [<804b2510>] (kfree) from [<8045a848>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a08 r9:845e2880 r8:84dbb000 r7:00000000 r6:846a6c80 r5:84c6e500 r4:84dbb000 [<8045a81c>] (kvfree) from [<813b441c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797) r5:84c6e500 r4:84dbb000 [<813b4400>] (netdev_freemem) from [<813ef47c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<813ef450>] (netdev_release) from [<80a41d90>] (device_release+0x38/0xa8 drivers/base/core.c:2565) r5:84c6e500 r4:84dbb3b8 [<80a41d58>] (device_release) from [<81853ec0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a41d58>] (device_release) from [<81853ec0>] (kobject_release lib/kobject.c:720 [inline]) [<80a41d58>] (device_release) from [<81853ec0>] (kref_put include/linux/kref.h:65 [inline]) [<80a41d58>] (device_release) from [<81853ec0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b485c4 r4:84dbb3b8 [<81853df8>] (kobject_put) from [<80a42018>] (put_device+0x18/0x1c drivers/base/core.c:3813) r7:845e3c00 r6:84dbb10c r5:84dbb000 r4:00000000 [<80a42000>] (put_device) from [<813a5768>] (free_netdev+0x108/0x188 net/core/dev.c:10993) [<813a5660>] (free_netdev) from [<80d11610>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84dbb774 r5:84dbb660 r4:00000000 [<80d11564>] (usbnet_disconnect) from [<80d6c64c>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:845e3c30 r6:82775a08 r5:00000000 r4:845e3c00 [<80d6c5c8>] (usb_unbind_interface) from [<80a49e6c>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6c5c8>] (usb_unbind_interface) from [<80a49e6c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:845e2880 r9:828eccc4 r8:00000044 r7:845e3c74 r6:82775a08 r5:00000000 r4:845e3c30 [<80a49e08>] (device_remove) from [<80a4b384>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a49e08>] (device_remove) from [<80a4b384>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:845e3c30 [<80a4b1f8>] (device_release_driver_internal) from [<80a4b410>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eccc4 r8:83404040 r7:83404038 r6:8340400c r5:845e3c30 r4:83404030 [<80a4b3f8>] (device_release_driver) from [<80a49510>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a49444>] (bus_remove_device) from [<80a43594>] (device_del+0x15c/0x3bc drivers/base/core.c:3894) r9:828eccc4 r8:845e3c00 r7:84794800 r6:84d3fb48 r5:04208060 r4:845e3c30 [<80a43438>] (device_del) from [<80d6a0a8>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:845e3c00 r7:845e2800 r6:84d3fb48 r5:00000001 r4:00000038 [<80d69fcc>] (usb_disable_device) from [<80d5ef14>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:8585fa00 r8:845e28c4 r7:83680800 r6:845e2880 r5:845e2800 r4:60000013 [<80d5ee28>] (usb_disconnect) from [<80d61bc4>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d5ee28>] (usb_disconnect) from [<80d61bc4>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d5ee28>] (usb_disconnect) from [<80d61bc4>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d5ee28>] (usb_disconnect) from [<80d61bc4>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:837a3500 r7:845e2800 r6:83680000 r5:83680a10 r4:00000001 [<80d60d4c>] (hub_event) from [<8026660c>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82fcd005 r9:84794800 r8:00000180 r7:ddde40c0 r6:82fcd000 r5:837a3500 r4:85141000 [<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) r10:84794800 r9:8514102c r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:85141000 [<80267144>] (worker_thread) from [<80270044>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:dfd31e90 r8:83ca5400 r7:85141000 r6:80267144 r5:84794800 r4:83ca5900 [<8026ff40>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfa79fb0 to 0xdfa79ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026ff40 r4:83ca5900 Rebooting in 86400 seconds..