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 9 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: 7677 at lib/debugobjects.c:515 debug_print_object+0xc4/0xd8 lib/debugobjects.c:515 ODEBUG: free active (active state 0) object: 852ed7cc 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 UID: 0 PID: 7677 Comm: kworker/0:6 Not tainted 6.11.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<8195cf00>] (dump_backtrace) from [<8195cffc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:826228c4 r5:00000000 r4:8200ca48 [<8195cfe4>] (show_stack) from [<8197ad20>] (__dump_stack lib/dump_stack.c:93 [inline]) [<8195cfe4>] (show_stack) from [<8197ad20>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119) [<8197accc>] (dump_stack_lvl) from [<8197ad60>] (dump_stack+0x18/0x1c lib/dump_stack.c:128) r5:00000000 r4:8286dd18 [<8197ad48>] (dump_stack) from [<8195daa4>] (panic+0x120/0x368 kernel/panic.c:354) [<8195d984>] (panic) from [<802421e4>] (check_panic_on_warn kernel/panic.c:243 [inline]) [<8195d984>] (panic) from [<802421e4>] (get_taint+0x0/0x1c kernel/panic.c:238) r3:8260c5c4 r2:00000001 r1:81ff526c r0:81ffd044 r7:8082dc3c [<80242170>] (check_panic_on_warn) from [<80242338>] (__warn+0x7c/0x180 kernel/panic.c:741) [<802422bc>] (__warn) from [<80242624>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:774) r8:00000009 r7:8205bd0c r6:dfcfda8c r5:8372a400 r4:00000000 [<80242440>] (warn_slowpath_fmt) from [<8082dc3c>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:515) r10:00000005 r9:852ed000 r8:81a01c24 r7:820862b4 r6:828d171c r5:dfcfdb34 r4:8260cda4 [<8082db78>] (debug_print_object) from [<8082f4dc>] (__debug_check_no_obj_freed lib/debugobjects.c:990 [inline]) [<8082db78>] (debug_print_object) from [<8082f4dc>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1020) r8:852ed800 r7:852ed7cc r6:00000100 r5:00000003 r4:00000000 [<8082f288>] (debug_check_no_obj_freed) from [<804bc95c>] (slab_free_hook mm/slub.c:2219 [inline]) [<8082f288>] (debug_check_no_obj_freed) from [<804bc95c>] (slab_free mm/slub.c:4473 [inline]) [<8082f288>] (debug_check_no_obj_freed) from [<804bc95c>] (kfree+0x198/0x338 mm/slub.c:4594) r10:82779f24 r9:85e5f880 r8:852ed000 r7:804617e0 r6:82c023c0 r5:ddeb38a0 r4:852ed000 [<804bc7c4>] (kfree) from [<804617e0>] (kvfree+0x2c/0x30 mm/util.c:696) r10:82779f24 r9:85e5f880 r8:852ed000 r7:00000000 r6:84ac4d00 r5:85253300 r4:852ed000 [<804617b4>] (kvfree) from [<814c5a7c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) r5:85253300 r4:852ed000 [<814c5a50>] (netdev_release) from [<80a74990>] (device_release+0x38/0xa8 drivers/base/core.c:2582) r5:85253300 r4:852ed3c0 [<80a74958>] (device_release) from [<81936d48>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a74958>] (device_release) from [<81936d48>] (kobject_release lib/kobject.c:720 [inline]) [<80a74958>] (device_release) from [<81936d48>] (kref_put include/linux/kref.h:65 [inline]) [<80a74958>] (device_release) from [<81936d48>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81b4b7cc r4:852ed3c0 [<81936ca8>] (kobject_put) from [<80a74bbc>] (put_device+0x18/0x1c drivers/base/core.c:3790) r7:85e5d800 r6:852ed10c r5:852ed000 r4:00000000 [<80a74ba4>] (put_device) from [<8147a9b4>] (free_netdev+0x114/0x18c net/core/dev.c:11205) [<8147a8a0>] (free_netdev) from [<80d568e8>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:852ed794 r5:852ed680 r4:00000000 [<80d5683c>] (usbnet_disconnect) from [<80dbe548>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:85e5d830 r6:82779f24 r5:00000000 r4:85e5d800 [<80dbe4c4>] (usb_unbind_interface) from [<80a7ca94>] (device_remove drivers/base/dd.c:568 [inline]) [<80dbe4c4>] (usb_unbind_interface) from [<80a7ca94>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:85e5f880 r8:00000044 r7:85e5d874 r6:82779f24 r5:00000000 r4:85e5d830 [<80a7ca30>] (device_remove) from [<80a7dfac>] (__device_release_driver drivers/base/dd.c:1272 [inline]) [<80a7ca30>] (device_remove) from [<80a7dfac>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295) r5:00000000 r4:85e5d830 [<80a7de20>] (device_release_driver_internal) from [<80a7e038>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318) r9:85e5f880 r8:82f5ad40 r7:82f5ad38 r6:82f5ad0c r5:85e5d830 r4:82f5ad30 [<80a7e020>] (device_release_driver) from [<80a7c118>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a7c04c>] (bus_remove_device) from [<80a76228>] (device_del+0x148/0x38c drivers/base/core.c:3871) r9:85e5f880 r8:8372a400 r7:04208060 r6:00000000 r5:85e5d830 r4:85e5d874 [<80a760e0>] (device_del) from [<80dbbf64>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:85e5d800 r7:85e5f800 r6:845add08 r5:00000001 r4:00000038 [<80dbbe88>] (usb_disable_device) from [<80db0dc8>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:83443000 r8:85e5f8c4 r7:83e46000 r6:85e5f880 r5:85e5f800 r4:60000013 [<80db0cdc>] (usb_disconnect) from [<80db3a78>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80db0cdc>] (usb_disconnect) from [<80db3a78>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80db0cdc>] (usb_disconnect) from [<80db3a78>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80db0cdc>] (usb_disconnect) from [<80db3a78>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:837dd900 r7:85e5f800 r6:83e45800 r5:83e46210 r4:00000001 [<80db2c00>] (hub_event) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r10:82e6e805 r9:8372a400 r8:00800000 r7:dddd0000 r6:82e6e800 r5:837dd900 r4:84456000 [<80265d54>] (process_one_work) from [<80266aec>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80265d54>] (process_one_work) from [<80266aec>] (worker_thread+0x1ec/0x3b4 kernel/workqueue.c:3389) r10:8372a400 r9:8445602c r8:61c88647 r7:dddd0020 r6:82604d40 r5:dddd0000 r4:84456000 [<80266900>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:dfc71e78 r8:851c7200 r7:84456000 r6:80266900 r5:8372a400 r4:851c7c40 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfcfdfb0 to 0xdfcfdff8) 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 r5:8026fa00 r4:851c7c40 Rebooting in 86400 seconds..