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 5 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: 3219 at lib/debugobjects.c:612 debug_print_object+0xc4/0xd8 lib/debugobjects.c:612 ODEBUG: free active (active state 0) object: 84ec780c object type: work_struct hint: usbnet_deferred_kevent+0x0/0x394 drivers/net/usb/usbnet.c:644 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 UID: 0 PID: 3219 Comm: kworker/0:3 Not tainted 6.16.0-rc4-syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<80201a00>] (dump_backtrace) from [<80201afc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:8282083c r5:00000000 r4:8225c1d0 [<80201ae4>] (show_stack) from [<8021fd6c>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201ae4>] (show_stack) from [<8021fd6c>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120) [<8021fd18>] (dump_stack_lvl) from [<8021fdac>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:82a6dd18 [<8021fd94>] (dump_stack) from [<80202614>] (panic+0x120/0x374 kernel/panic.c:382) [<802024f4>] (panic) from [<802585b8>] (check_panic_on_warn kernel/panic.c:273 [inline]) [<802024f4>] (panic) from [<802585b8>] (get_taint+0x0/0x1c kernel/panic.c:268) r3:8280c684 r2:00000001 r1:82242d00 r0:8224a6b0 r7:808d5564 [<80258544>] (check_panic_on_warn) from [<8025871c>] (__warn+0x80/0x188 kernel/panic.c:777) [<8025869c>] (__warn) from [<80258a0c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:812) r8:00000009 r7:822b4ce4 r6:dfb15a84 r5:84f6a400 r4:00000000 [<80258828>] (warn_slowpath_fmt) from [<808d5564>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:612) r10:00000005 r9:84ec7000 r8:81c01f18 r7:822dfbfc r6:82ad9ee4 r5:dfb15b2c r4:8280ccbc [<808d54a0>] (debug_print_object) from [<808d6fb0>] (__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]) [<808d54a0>] (debug_print_object) from [<808d6fb0>] (debug_check_no_obj_freed+0x25c/0x2a4 lib/debugobjects.c:1129) r8:84ec8000 r7:84ec780c r6:00000100 r5:00000003 r4:00000000 [<808d6d54>] (debug_check_no_obj_freed) from [<80503ef8>] (slab_free_hook mm/slub.c:2312 [inline]) [<808d6d54>] (debug_check_no_obj_freed) from [<80503ef8>] (slab_free mm/slub.c:4643 [inline]) [<808d6d54>] (debug_check_no_obj_freed) from [<80503ef8>] (kfree+0x190/0x394 mm/slub.c:4842) r10:00000001 r9:8297f9c4 r8:84ec7000 r7:80504d9c r6:83002480 r5:ddeaa300 r4:84ec7000 [<80503d68>] (kfree) from [<80504d9c>] (kvfree+0x2c/0x30 mm/slub.c:5058) r10:00000001 r9:8297f9c4 r8:84ec7000 r7:00000000 r6:85a09040 r5:85829f00 r4:84ec7000 [<80504d70>] (kvfree) from [<815af500>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2231) r5:85829f00 r4:84ec7000 [<815af4d4>] (netdev_release) from [<80b30fc4>] (device_release+0x38/0xa8 drivers/base/core.c:2568) r5:85829f00 r4:84ec73c0 [<80b30f8c>] (device_release) from [<81a072b0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80b30f8c>] (device_release) from [<81a072b0>] (kobject_release lib/kobject.c:720 [inline]) [<80b30f8c>] (device_release) from [<81a072b0>] (kref_put include/linux/kref.h:65 [inline]) [<80b30f8c>] (device_release) from [<81a072b0>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81d4f4fc r4:84ec73c0 [<81a07210>] (kobject_put) from [<80b311f0>] (put_device+0x18/0x1c drivers/base/core.c:3800) r7:000000c0 r6:00000000 r5:00000000 r4:84ec7000 [<80b311d8>] (put_device) from [<815608bc>] (free_netdev+0x18c/0x244 net/core/dev.c:11900) [<81560730>] (free_netdev) from [<80e23c04>] (usbnet_disconnect+0xb8/0xfc drivers/net/usb/usbnet.c:1663) r7:84cc1800 r6:84ec77d4 r5:84ec76c0 r4:00000000 [<80e23b4c>] (usbnet_disconnect) from [<80e8d7c8>] (usb_unbind_interface+0x84/0x2b4 drivers/usb/core/driver.c:458) r8:84cc0488 r7:84cc1874 r6:84cc1830 r5:00000000 r4:84cc0400 [<80e8d744>] (usb_unbind_interface) from [<80b39278>] (device_remove drivers/base/dd.c:569 [inline]) [<80e8d744>] (usb_unbind_interface) from [<80b39278>] (device_remove+0x64/0x6c drivers/base/dd.c:561) r10:00000001 r9:84cc0488 r8:00000044 r7:84cc1874 r6:8297f9c4 r5:00000000 r4:84cc1830 [<80b39214>] (device_remove) from [<80b3a768>] (__device_release_driver drivers/base/dd.c:1272 [inline]) [<80b39214>] (device_remove) from [<80b3a768>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295) r5:00000000 r4:84cc1830 [<80b3a5dc>] (device_release_driver_internal) from [<80b3a7f4>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318) r9:84cc0488 r8:83397c40 r7:83397c38 r6:83397c0c r5:84cc1830 r4:83397c30 [<80b3a7dc>] (device_release_driver) from [<80b388cc>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:579) [<80b38800>] (bus_remove_device) from [<80b32c28>] (device_del+0x148/0x38c drivers/base/core.c:3881) r9:84cc0488 r8:84f6a400 r7:04208060 r6:00000000 r5:84cc1830 r4:84cc1874 [<80b32ae0>] (device_del) from [<80e8b218>] (usb_disable_device+0xd4/0x1e8 drivers/usb/core/message.c:1418) r10:00000001 r9:00000000 r8:00000000 r7:84cc1800 r6:84cc0400 r5:85a09dc8 r4:00000001 [<80e8b144>] (usb_disable_device) from [<80e7ff2c>] (usb_disconnect+0xec/0x2ac drivers/usb/core/hub.c:2344) r9:84e78000 r8:84cc04cc r7:8334b800 r6:84cc0488 r5:84cc0400 r4:600d0013 [<80e7fe40>] (usb_disconnect) from [<80e82c04>] (hub_port_connect drivers/usb/core/hub.c:5406 [inline]) [<80e7fe40>] (usb_disconnect) from [<80e82c04>] (hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]) [<80e7fe40>] (usb_disconnect) from [<80e82c04>] (port_event drivers/usb/core/hub.c:5866 [inline]) [<80e7fe40>] (usb_disconnect) from [<80e82c04>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5948) r10:00000001 r9:00000100 r8:83ced52c r7:84cc0400 r6:8334b000 r5:8334ba10 r4:00000001 [<80e81d8c>] (hub_event) from [<8027e2e8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3238) r10:83397e70 r9:8326f405 r8:84f6a400 r7:dddced40 r6:8326f400 r5:83ced52c r4:85610280 [<8027e134>] (process_one_work) from [<8027ef30>] (process_scheduled_works kernel/workqueue.c:3321 [inline]) [<8027e134>] (process_one_work) from [<8027ef30>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3402) r10:61c88647 r9:84f6a400 r8:856102ac r7:82804d40 r6:dddced40 r5:dddced60 r4:85610280 [<8027ed34>] (worker_thread) from [<80285f5c>] (kthread+0x12c/0x280 kernel/kthread.c:464) r10:00000000 r9:85610280 r8:8027ed34 r7:df911e60 r6:84bfaf80 r5:84f6a400 r4:00000001 [<80285e30>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb15fb0 to 0xdfb15ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80285e30 r4:8566cb80 Rebooting in 86400 seconds..