usb 2-1: USB disconnect, device number 24 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: 14143 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 85549fac 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: 14143 Comm: kworker/0:1 Not tainted 6.9.0-rc2-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<81879f7c>] (dump_backtrace) from [<8187a078>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fc4844 [<8187a060>] (show_stack) from [<81897814>] (__dump_stack lib/dump_stack.c:88 [inline]) [<8187a060>] (show_stack) from [<81897814>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818977c0>] (dump_stack_lvl) from [<81897854>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82858d18 [<8189783c>] (dump_stack) from [<8187ab20>] (panic+0x120/0x358 kernel/panic.c:348) [<8187aa00>] (panic) from [<8024390c>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<8187aa00>] (panic) from [<8024390c>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fad4c8 r0:81fb5070 r7:8080ba58 [<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:eccf5a7c r5:8360d400 r4:00000000 [<80243c08>] (warn_slowpath_fmt) from [<8080ba58>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:85549800 r8:81a02b44 r7:820393bc r6:828bc414 r5:eccf5b24 r4:8260ce18 [<8080b994>] (debug_print_object) from [<8080d2f0>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080b994>] (debug_print_object) from [<8080d2f0>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:8554a000 r7:85549fac r6:00000100 r5:00000003 r4:00000000 [<8080d09c>] (debug_check_no_obj_freed) from [<804b26e0>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080d09c>] (debug_check_no_obj_freed) from [<804b26e0>] (slab_free mm/slub.c:4280 [inline]) [<8080d09c>] (debug_check_no_obj_freed) from [<804b26e0>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a08 r9:84c57c80 r8:85549800 r7:8045a878 r6:82c023c0 r5:ddeb8e20 r4:85549800 [<804b2540>] (kfree) from [<8045a878>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a08 r9:84c57c80 r8:85549800 r7:00000000 r6:85165000 r5:84fb7180 r4:85549800 [<8045a84c>] (kvfree) from [<813b444c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797) r5:84fb7180 r4:85549800 [<813b4430>] (netdev_freemem) from [<813ef4ac>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<813ef480>] (netdev_release) from [<80a41dc0>] (device_release+0x38/0xa8 drivers/base/core.c:2565) r5:84fb7180 r4:85549bb8 [<80a41d88>] (device_release) from [<81853ee0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a41d88>] (device_release) from [<81853ee0>] (kobject_release lib/kobject.c:720 [inline]) [<80a41d88>] (device_release) from [<81853ee0>] (kref_put include/linux/kref.h:65 [inline]) [<80a41d88>] (device_release) from [<81853ee0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b485c4 r4:85549bb8 [<81853e18>] (kobject_put) from [<80a42048>] (put_device+0x18/0x1c drivers/base/core.c:3813) r7:84c55800 r6:8554990c r5:85549800 r4:00000000 [<80a42030>] (put_device) from [<813a5798>] (free_netdev+0x108/0x188 net/core/dev.c:10993) [<813a5690>] (free_netdev) from [<80d11640>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:85549f74 r5:85549e60 r4:00000000 [<80d11594>] (usbnet_disconnect) from [<80d6c67c>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:84c55830 r6:82775a08 r5:00000000 r4:84c55800 [<80d6c5f8>] (usb_unbind_interface) from [<80a49e9c>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6c5f8>] (usb_unbind_interface) from [<80a49e9c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:84c57c80 r9:828eccc4 r8:00000044 r7:84c55874 r6:82775a08 r5:00000000 r4:84c55830 [<80a49e38>] (device_remove) from [<80a4b3b4>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a49e38>] (device_remove) from [<80a4b3b4>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:84c55830 [<80a4b228>] (device_release_driver_internal) from [<80a4b440>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eccc4 r8:83407a40 r7:83407a38 r6:83407a0c r5:84c55830 r4:83407a30 [<80a4b428>] (device_release_driver) from [<80a49540>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a49474>] (bus_remove_device) from [<80a435c4>] (device_del+0x15c/0x3bc drivers/base/core.c:3894) r9:828eccc4 r8:84c55800 r7:8360d400 r6:853a15c8 r5:04208060 r4:84c55830 [<80a43468>] (device_del) from [<80d6a0d8>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:84c55800 r7:84c57c00 r6:853a15c8 r5:00000001 r4:00000038 [<80d69ffc>] (usb_disable_device) from [<80d5ef44>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:84eeac00 r8:84c57cc4 r7:83d6dc00 r6:84c57c80 r5:84c57c00 r4:60000013 [<80d5ee58>] (usb_disconnect) from [<80d61bf4>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d5ee58>] (usb_disconnect) from [<80d61bf4>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d5ee58>] (usb_disconnect) from [<80d61bf4>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d5ee58>] (usb_disconnect) from [<80d61bf4>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83859f00 r7:84c57c00 r6:83891c00 r5:83d6de10 r4:00000001 [<80d60d7c>] (hub_event) from [<8026660c>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82f95005 r9:8360d400 r8:00000080 r7:dddd00c0 r6:82f95000 r5:83859f00 r4:845e8780 [<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) r10:8360d400 r9:845e87ac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:845e8780 [<80267144>] (worker_thread) from [<80270044>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df835e90 r8:84fe6d40 r7:845e8780 r6:80267144 r5:8360d400 r4:84fe6bc0 [<8026ff40>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xeccf5fb0 to 0xeccf5ff8) 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 r5:8026ff40 r4:84fe6bc0 Rebooting in 86400 seconds..