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 4 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: 3793 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 852967cc object type: work_struct hint: usbnet_deferred_kevent+0x0/0x388 drivers/net/usb/usbnet.c:627 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 UID: 0 PID: 3793 Comm: kworker/0:5 Not tainted 6.11.0-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<819924a0>] (dump_backtrace) from [<8199259c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:826228c4 r5:00000000 r4:82039e54 [<81992584>] (show_stack) from [<819b086c>] (__dump_stack lib/dump_stack.c:94 [inline]) [<81992584>] (show_stack) from [<819b086c>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120) [<819b0818>] (dump_stack_lvl) from [<819b08ac>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:82870d18 [<819b0894>] (dump_stack) from [<819930c8>] (panic+0x120/0x374 kernel/panic.c:354) [<81992fa8>] (panic) from [<8024217c>] (check_panic_on_warn kernel/panic.c:243 [inline]) [<81992fa8>] (panic) from [<8024217c>] (get_taint+0x0/0x1c kernel/panic.c:238) r3:8260c5c4 r2:00000001 r1:820221f8 r0:82029c60 r7:80854168 [<80242108>] (check_panic_on_warn) from [<802422e0>] (__warn+0x80/0x188 kernel/panic.c:748) [<80242260>] (__warn) from [<802425d0>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:783) r8:00000009 r7:8208900c r6:dfd8da8c r5:83de0c00 r4:00000000 [<802423ec>] (warn_slowpath_fmt) from [<80854168>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:85296000 r8:81a01c30 r7:820b370c r6:828dd084 r5:dfd8db34 r4:8260cda4 [<808540a4>] (debug_print_object) from [<808559f8>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<808540a4>] (debug_print_object) from [<808559f8>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:85296800 r7:852967cc r6:00000100 r5:00000003 r4:00000000 [<808557a4>] (debug_check_no_obj_freed) from [<804c91d8>] (slab_free_hook mm/slub.c:2274 [inline]) [<808557a4>] (debug_check_no_obj_freed) from [<804c91d8>] (slab_free mm/slub.c:4580 [inline]) [<808557a4>] (debug_check_no_obj_freed) from [<804c91d8>] (kfree+0x190/0x394 mm/slub.c:4728) r10:8277d7dc r9:851c6880 r8:85296000 r7:8046d1d0 r6:82c023c0 r5:ddeb2c40 r4:85296000 [<804c9048>] (kfree) from [<8046d1d0>] (kvfree+0x2c/0x30 mm/util.c:701) r10:8277d7dc r9:851c6880 r8:85296000 r7:00000000 r6:84bd91c0 r5:84a27300 r4:85296000 [<8046d1a4>] (kvfree) from [<814f5570>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2034) r5:84a27300 r4:85296000 [<814f5544>] (netdev_release) from [<80a9f224>] (device_release+0x38/0xa8 drivers/base/core.c:2582) r5:84a27300 r4:852963c0 [<80a9f1ec>] (device_release) from [<8196c44c>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a9f1ec>] (device_release) from [<8196c44c>] (kobject_release lib/kobject.c:720 [inline]) [<80a9f1ec>] (device_release) from [<8196c44c>] (kref_put include/linux/kref.h:65 [inline]) [<80a9f1ec>] (device_release) from [<8196c44c>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737) r5:81b4c3ac r4:852963c0 [<8196c3ac>] (kobject_put) from [<80a9f450>] (put_device+0x18/0x1c drivers/base/core.c:3790) r7:851c6000 r6:00000000 r5:85296000 r4:00000000 [<80a9f438>] (put_device) from [<814a96dc>] (free_netdev+0x134/0x1ac net/core/dev.c:11251) [<814a95a8>] (free_netdev) from [<80d832b8>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1633) r6:85296794 r5:85296680 r4:00000000 [<80d8320c>] (usbnet_disconnect) from [<80deb174>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:851c6030 r6:8277d7dc r5:00000000 r4:851c6000 [<80deb0f0>] (usb_unbind_interface) from [<80aa7324>] (device_remove drivers/base/dd.c:568 [inline]) [<80deb0f0>] (usb_unbind_interface) from [<80aa7324>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:00000000 r9:851c6880 r8:00000044 r7:851c6074 r6:8277d7dc r5:00000000 r4:851c6030 [<80aa72c0>] (device_remove) from [<80aa883c>] (__device_release_driver drivers/base/dd.c:1272 [inline]) [<80aa72c0>] (device_remove) from [<80aa883c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295) r5:00000000 r4:851c6030 [<80aa86b0>] (device_release_driver_internal) from [<80aa88c8>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318) r9:851c6880 r8:82cd8440 r7:82cd8438 r6:82cd840c r5:851c6030 r4:82cd8430 [<80aa88b0>] (device_release_driver) from [<80aa69ac>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80aa68e0>] (bus_remove_device) from [<80aa0abc>] (device_del+0x148/0x38c drivers/base/core.c:3871) r9:851c6880 r8:83de0c00 r7:04208060 r6:00000000 r5:851c6030 r4:851c6074 [<80aa0974>] (device_del) from [<80de8b90>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:851c6000 r7:851c6800 r6:84b5e008 r5:00000001 r4:00000038 [<80de8ab4>] (usb_disable_device) from [<80ddd9f4>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304) r10:00000001 r9:84b99400 r8:851c68c4 r7:83ea9800 r6:851c6880 r5:851c6800 r4:60000113 [<80ddd908>] (usb_disconnect) from [<80de06a4>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80ddd908>] (usb_disconnect) from [<80de06a4>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80ddd908>] (usb_disconnect) from [<80de06a4>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80ddd908>] (usb_disconnect) from [<80de06a4>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83bc4300 r7:851c6800 r6:83ea9000 r5:83ea9a10 r4:00000001 [<80ddf82c>] (hub_event) from [<8026615c>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3229) r10:82e27005 r9:83de0c00 r8:00800000 r7:dddd00c0 r6:82e27000 r5:83bc4300 r4:849b9580 [<80265fa8>] (process_one_work) from [<80266d40>] (process_scheduled_works kernel/workqueue.c:3310 [inline]) [<80265fa8>] (process_one_work) from [<80266d40>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3391) r10:83de0c00 r9:849b95ac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:849b9580 [<80266b54>] (worker_thread) from [<8026fdac>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:ec7ede78 r8:849fa780 r7:849b9580 r6:80266b54 r5:83de0c00 r4:849fa480 [<8026fca8>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfd8dfb0 to 0xdfd8dff8) 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 r5:8026fca8 r4:849fa480 Rebooting in 86400 seconds..