cdc_ncm 1-1:1.0 usb0: register 'cdc_ncm' at usb-dummy_hcd.0-1, CDC NCM (NO ZLP), 42:42:42:42:42:42 usb 1-1: USB disconnect, device number 8 cdc_ncm 1-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.0-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4492 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 84e4dfac 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: 4492 Comm: kworker/0:9 Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818a221c>] (dump_backtrace) from [<818a2318>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fcedd0 [<818a2300>] (show_stack) from [<818bfa54>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818a2300>] (show_stack) from [<818bfa54>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818bfa00>] (dump_stack_lvl) from [<818bfa94>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285ad18 [<818bfa7c>] (dump_stack) from [<818a2dc0>] (panic+0x120/0x358 kernel/panic.c:348) [<818a2ca0>] (panic) from [<802438ec>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818a2ca0>] (panic) from [<802438ec>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fb7b10 r0:81fbf6b4 r7:8080a410 [<80243878>] (check_panic_on_warn) from [<80243ae0>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243a64>] (__warn) from [<80243dcc>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:8201b6e0 r6:dfc8da7c r5:83e93000 r4:00000000 [<80243be8>] (warn_slowpath_fmt) from [<8080a410>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84e4d800 r8:81a02b44 r7:82043668 r6:828be454 r5:dfc8db24 r4:8260ce18 [<8080a34c>] (debug_print_object) from [<8080bca8>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080a34c>] (debug_print_object) from [<8080bca8>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:84e4e000 r7:84e4dfac r6:00000100 r5:00000003 r4:00000000 [<8080ba54>] (debug_check_no_obj_freed) from [<804b2c04>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080ba54>] (debug_check_no_obj_freed) from [<804b2c04>] (slab_free mm/slub.c:4280 [inline]) [<8080ba54>] (debug_check_no_obj_freed) from [<804b2c04>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a48 r9:84eeb880 r8:84e4d800 r7:8045a8cc r6:82c023c0 r5:ddea9220 r4:84e4d800 [<804b2a64>] (kfree) from [<8045a8cc>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a48 r9:84eeb880 r8:84e4d800 r7:00000000 r6:85262880 r5:8524be80 r4:84e4d800 [<8045a8a0>] (kvfree) from [<813dc420>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10803) r5:8524be80 r4:84e4d800 [<813dc404>] (netdev_freemem) from [<8141748c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<81417460>] (netdev_release) from [<80a40aa0>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:8524be80 r4:84e4dbb8 [<80a40a68>] (device_release) from [<8187c180>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a40a68>] (device_release) from [<8187c180>] (kobject_release lib/kobject.c:720 [inline]) [<80a40a68>] (device_release) from [<8187c180>] (kref_put include/linux/kref.h:65 [inline]) [<80a40a68>] (device_release) from [<8187c180>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b48984 r4:84e4dbb8 [<8187c0b8>] (kobject_put) from [<80a40d28>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:84eebc00 r6:84e4d90c r5:84e4d800 r4:00000000 [<80a40d10>] (put_device) from [<813cd708>] (free_netdev+0x108/0x188 net/core/dev.c:10999) [<813cd600>] (free_netdev) from [<80d114b0>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84e4df74 r5:84e4de60 r4:00000000 [<80d11404>] (usbnet_disconnect) from [<80d6c594>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:84eebc30 r6:82775a48 r5:00000000 r4:84eebc00 [<80d6c510>] (usb_unbind_interface) from [<80a48b7c>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6c510>] (usb_unbind_interface) from [<80a48b7c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:84eeb880 r9:828eecfc r8:00000044 r7:84eebc74 r6:82775a48 r5:00000000 r4:84eebc30 [<80a48b18>] (device_remove) from [<80a4a094>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a48b18>] (device_remove) from [<80a4a094>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:84eebc30 [<80a49f08>] (device_release_driver_internal) from [<80a4a120>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eecfc r8:82f52b40 r7:82f52b38 r6:82f52b0c r5:84eebc30 r4:82f52b30 [<80a4a108>] (device_release_driver) from [<80a48220>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a48154>] (bus_remove_device) from [<80a422a4>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828eecfc r8:84eebc00 r7:83e93000 r6:85249dc8 r5:04208060 r4:84eebc30 [<80a42148>] (device_del) from [<80d69ff0>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:84eebc00 r7:84eeb800 r6:85249dc8 r5:00000001 r4:00000038 [<80d69f14>] (usb_disable_device) from [<80d5ee5c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:84e70800 r8:84eeb8c4 r7:83f60800 r6:84eeb880 r5:84eeb800 r4:60000113 [<80d5ed70>] (usb_disconnect) from [<80d61b0c>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d5ed70>] (usb_disconnect) from [<80d61b0c>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d5ed70>] (usb_disconnect) from [<80d61b0c>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d5ed70>] (usb_disconnect) from [<80d61b0c>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83ee8900 r7:84eeb800 r6:83f60000 r5:83f60a10 r4:00000001 [<80d60c94>] (hub_event) from [<802665ec>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82e65805 r9:83e93000 r8:00000080 r7:dddd00c0 r6:82e65800 r5:83ee8900 r4:84f7bf80 [<80266434>] (process_one_work) from [<80267310>] (process_scheduled_works kernel/workqueue.c:3335 [inline]) [<80266434>] (process_one_work) from [<80267310>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3416) r10:83e93000 r9:84f7bfac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:84f7bf80 [<80267124>] (worker_thread) from [<80270024>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:e058de90 r8:850f66c0 r7:84f7bf80 r6:80267124 r5:83e93000 r4:85124d00 [<8026ff20>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfc8dfb0 to 0xdfc8dff8) 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 r5:8026ff20 r4:85124d00 Rebooting in 86400 seconds..