cdc_ncm 2-1:1.0 usb0: register 'cdc_ncm' at usb-dummy_hcd.1-1, CDC NCM (NO ZLP), 42:42:42:42:42:42 usb 2-1: USB disconnect, device number 85 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: 21196 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 83ab6fac 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: 21196 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 r4:81fc4838 [<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 r1:81fad4bc r0:81fb5064 r7:8080ba48 [<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 r7:8201145c r6:dfc85a7c r5:83663000 r4:00000000 [<80243c08>] (warn_slowpath_fmt) from [<8080ba48>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:83ab6800 r8:81a02b44 r7:820393b0 r6:828bc414 r5:dfc85b24 r4:8260ce18 [<8080b984>] (debug_print_object) from [<8080d2e0>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080b984>] (debug_print_object) from [<8080d2e0>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:83ab7000 r7:83ab6fac r6:00000100 r5:00000003 r4:00000000 [<8080d08c>] (debug_check_no_obj_freed) from [<804b26e0>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080d08c>] (debug_check_no_obj_freed) from [<804b26e0>] (slab_free mm/slub.c:4280 [inline]) [<8080d08c>] (debug_check_no_obj_freed) from [<804b26e0>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a08 r9:84b48880 r8:83ab6800 r7:8045a878 r6:82c023c0 r5:dde7d0c0 r4:83ab6800 [<804b2540>] (kfree) from [<8045a878>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a08 r9:84b48880 r8:83ab6800 r7:00000000 r6:83ec4800 r5:84dd6200 r4:83ab6800 [<8045a84c>] (kvfree) from [<813b443c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797) r5:84dd6200 r4:83ab6800 [<813b4420>] (netdev_freemem) from [<813ef49c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<813ef470>] (netdev_release) from [<80a41db0>] (device_release+0x38/0xa8 drivers/base/core.c:2565) r5:84dd6200 r4:83ab6bb8 [<80a41d78>] (device_release) from [<81853ee0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a41d78>] (device_release) from [<81853ee0>] (kobject_release lib/kobject.c:720 [inline]) [<80a41d78>] (device_release) from [<81853ee0>] (kref_put include/linux/kref.h:65 [inline]) [<80a41d78>] (device_release) from [<81853ee0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b485c4 r4:83ab6bb8 [<81853e18>] (kobject_put) from [<80a42038>] (put_device+0x18/0x1c drivers/base/core.c:3813) r7:84b49000 r6:83ab690c r5:83ab6800 r4:00000000 [<80a42020>] (put_device) from [<813a5788>] (free_netdev+0x108/0x188 net/core/dev.c:10993) [<813a5680>] (free_netdev) from [<80d11630>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:83ab6f74 r5:83ab6e60 r4:00000000 [<80d11584>] (usbnet_disconnect) from [<80d6c66c>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:84b49030 r6:82775a08 r5:00000000 r4:84b49000 [<80d6c5e8>] (usb_unbind_interface) from [<80a49e8c>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6c5e8>] (usb_unbind_interface) from [<80a49e8c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:84b48880 r9:828eccc4 r8:00000044 r7:84b49074 r6:82775a08 r5:00000000 r4:84b49030 [<80a49e28>] (device_remove) from [<80a4b3a4>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a49e28>] (device_remove) from [<80a4b3a4>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:84b49030 [<80a4b218>] (device_release_driver_internal) from [<80a4b430>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eccc4 r8:82f52a40 r7:82f52a38 r6:82f52a0c r5:84b49030 r4:82f52a30 [<80a4b418>] (device_release_driver) from [<80a49530>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a49464>] (bus_remove_device) from [<80a435b4>] (device_del+0x15c/0x3bc drivers/base/core.c:3894) r9:828eccc4 r8:84b49000 r7:83663000 r6:85221008 r5:04208060 r4:84b49030 [<80a43458>] (device_del) from [<80d6a0c8>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:84b49000 r7:84b48800 r6:85221008 r5:00000001 r4:00000038 [<80d69fec>] (usb_disable_device) from [<80d5ef34>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:84e94600 r8:84b488c4 r7:8391c400 r6:84b48880 r5:84b48800 r4:60000013 [<80d5ee48>] (usb_disconnect) from [<80d61be4>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d5ee48>] (usb_disconnect) from [<80d61be4>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d5ee48>] (usb_disconnect) from [<80d61be4>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d5ee48>] (usb_disconnect) from [<80d61be4>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83a4ff00 r7:84b48800 r6:83913c00 r5:8391c610 r4:00000001 [<80d60d6c>] (hub_event) from [<8026660c>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82e68005 r9:83663000 r8:00000080 r7:dddd00c0 r6:82e68000 r5:83a4ff00 r4:84fffd80 [<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) r10:83663000 r9:84fffdac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:84fffd80 [<80267144>] (worker_thread) from [<80270044>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:dff9de90 r8:84f5b3c0 r7:84fffd80 r6:80267144 r5:83663000 r4:84fe0700 [<8026ff40>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfc85fb0 to 0xdfc85ff8) 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 r4:84fe0700 Rebooting in 86400 seconds..