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 13 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: 3779 at lib/debugobjects.c:612 debug_print_object+0xc4/0xd8 lib/debugobjects.c:612 ODEBUG: free active (active state 0) object: 8519d80c 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: 3779 Comm: kworker/0:4 Not tainted 6.15.0-syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<802019e4>] (dump_backtrace) from [<80201ae0>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:828227fc r5:00000000 r4:82257fc0 [<80201ac8>] (show_stack) from [<8021ff7c>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201ac8>] (show_stack) from [<8021ff7c>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120) [<8021ff28>] (dump_stack_lvl) from [<8021ffbc>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:82a70d4c [<8021ffa4>] (dump_stack) from [<802025f8>] (panic+0x120/0x374 kernel/panic.c:354) [<802024d8>] (panic) from [<802619e8>] (check_panic_on_warn kernel/panic.c:243 [inline]) [<802024d8>] (panic) from [<802619e8>] (get_taint+0x0/0x1c kernel/panic.c:238) r3:8280c604 r2:00000001 r1:8223eb8c r0:8224668c r7:808c8d74 [<80261974>] (check_panic_on_warn) from [<80261b4c>] (__warn+0x80/0x188 kernel/panic.c:749) [<80261acc>] (__warn) from [<80261e3c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:784) r8:00000009 r7:822afbf8 r6:dfc9da84 r5:85036c00 r4:00000000 [<80261c58>] (warn_slowpath_fmt) from [<808c8d74>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:612) r10:00000005 r9:8519d000 r8:81c01f84 r7:822da7a8 r6:82add134 r5:dfc9db2c r4:8280cc1c [<808c8cb0>] (debug_print_object) from [<808ca7c0>] (__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]) [<808c8cb0>] (debug_print_object) from [<808ca7c0>] (debug_check_no_obj_freed+0x25c/0x2a4 lib/debugobjects.c:1129) r8:8519e000 r7:8519d80c r6:00000100 r5:00000003 r4:00000000 [<808ca564>] (debug_check_no_obj_freed) from [<80505bf0>] (slab_free_hook mm/slub.c:2311 [inline]) [<808ca564>] (debug_check_no_obj_freed) from [<80505bf0>] (slab_free mm/slub.c:4642 [inline]) [<808ca564>] (debug_check_no_obj_freed) from [<80505bf0>] (kfree+0x190/0x394 mm/slub.c:4841) r10:00000001 r9:82981094 r8:8519d000 r7:80506a94 r6:83002480 r5:ddeb0960 r4:8519d000 [<80505a60>] (kfree) from [<80506a94>] (kvfree+0x2c/0x30 mm/slub.c:5055) r10:00000001 r9:82981094 r8:8519d000 r7:00000000 r6:8549e4c0 r5:855c1600 r4:8519d000 [<80506a68>] (kvfree) from [<81597444>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2231) r5:855c1600 r4:8519d000 [<81597418>] (netdev_release) from [<80b1f574>] (device_release+0x38/0xa8 drivers/base/core.c:2568) r5:855c1600 r4:8519d3c0 [<80b1f53c>] (device_release) from [<81a29010>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80b1f53c>] (device_release) from [<81a29010>] (kobject_release lib/kobject.c:720 [inline]) [<80b1f53c>] (device_release) from [<81a29010>] (kref_put include/linux/kref.h:65 [inline]) [<80b1f53c>] (device_release) from [<81a29010>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81d4b794 r4:8519d3c0 [<81a28f70>] (kobject_put) from [<80b1f7a0>] (put_device+0x18/0x1c drivers/base/core.c:3800) r7:000000c0 r6:00000000 r5:00000000 r4:8519d000 [<80b1f788>] (put_device) from [<815492e4>] (free_netdev+0x18c/0x244 net/core/dev.c:11795) [<81549158>] (free_netdev) from [<80e0fd58>] (usbnet_disconnect+0xb8/0xfc drivers/net/usb/usbnet.c:1663) r7:8480c400 r6:8519d7d4 r5:8519d6c0 r4:00000000 [<80e0fca0>] (usbnet_disconnect) from [<80e7950c>] (usb_unbind_interface+0x84/0x2b4 drivers/usb/core/driver.c:458) r8:8480fc88 r7:8480c474 r6:8480c430 r5:00000000 r4:8480fc00 [<80e79488>] (usb_unbind_interface) from [<80b27828>] (device_remove drivers/base/dd.c:569 [inline]) [<80e79488>] (usb_unbind_interface) from [<80b27828>] (device_remove+0x64/0x6c drivers/base/dd.c:561) r10:00000001 r9:8480fc88 r8:00000044 r7:8480c474 r6:82981094 r5:00000000 r4:8480c430 [<80b277c4>] (device_remove) from [<80b28d18>] (__device_release_driver drivers/base/dd.c:1272 [inline]) [<80b277c4>] (device_remove) from [<80b28d18>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295) r5:00000000 r4:8480c430 [<80b28b8c>] (device_release_driver_internal) from [<80b28da4>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318) r9:8480fc88 r8:83326f40 r7:83326f38 r6:83326f0c r5:8480c430 r4:83326f30 [<80b28d8c>] (device_release_driver) from [<80b26e7c>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:579) [<80b26db0>] (bus_remove_device) from [<80b211d8>] (device_del+0x148/0x38c drivers/base/core.c:3881) r9:8480fc88 r8:85036c00 r7:04208060 r6:00000000 r5:8480c430 r4:8480c474 [<80b21090>] (device_del) from [<80e76f5c>] (usb_disable_device+0xd4/0x1e8 drivers/usb/core/message.c:1418) r10:00000001 r9:00000000 r8:00000000 r7:8480c400 r6:8480fc00 r5:85683f88 r4:00000001 [<80e76e88>] (usb_disable_device) from [<80e6bcf0>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2316) r9:8533ee00 r8:8480fccc r7:84163800 r6:8480fc88 r5:8480fc00 r4:60000113 [<80e6bc04>] (usb_disconnect) from [<80e6e9b0>] (hub_port_connect drivers/usb/core/hub.c:5371 [inline]) [<80e6bc04>] (usb_disconnect) from [<80e6e9b0>] (hub_port_connect_change drivers/usb/core/hub.c:5671 [inline]) [<80e6bc04>] (usb_disconnect) from [<80e6e9b0>] (port_event drivers/usb/core/hub.c:5831 [inline]) [<80e6bc04>] (usb_disconnect) from [<80e6e9b0>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5913) r10:00000001 r9:00000100 r8:83e15f00 r7:8480fc00 r6:84163000 r5:84163a10 r4:00000001 [<80e6db38>] (hub_event) from [<802873bc>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3238) r10:8332c170 r9:83271805 r8:85036c00 r7:dddced80 r6:83271800 r5:83e15f00 r4:85498280 [<80287208>] (process_one_work) from [<80288004>] (process_scheduled_works kernel/workqueue.c:3319 [inline]) [<80287208>] (process_one_work) from [<80288004>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3400) r10:61c88647 r9:85036c00 r8:854982ac r7:82804d40 r6:dddced80 r5:dddceda0 r4:85498280 [<80287e08>] (worker_thread) from [<8028f07c>] (kthread+0x12c/0x280 kernel/kthread.c:464) r10:00000000 r9:85498280 r8:80287e08 r7:df83de60 r6:85498400 r5:85036c00 r4:00000001 [<8028ef50>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfc9dfb0 to 0xdfc9dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8028ef50 r4:8549ee40 Rebooting in 86400 seconds..