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 81 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: 2154 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 84e167ac 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: 2154 Comm: kworker/0:0 Not tainted 6.9.0-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818c91c8>] (dump_backtrace) from [<818c92c4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e84 r5:00000000 r4:81fe17d0 [<818c92ac>] (show_stack) from [<818e68dc>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818c92ac>] (show_stack) from [<818e68dc>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818e6888>] (dump_stack_lvl) from [<818e691c>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82860d18 [<818e6904>] (dump_stack) from [<818c9d6c>] (panic+0x120/0x358 kernel/panic.c:348) [<818c9c4c>] (panic) from [<802437c8>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818c9c4c>] (panic) from [<802437c8>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c5c4 r2:00000001 r1:81fca480 r0:81fd207c r7:8081fb98 [<80243754>] (check_panic_on_warn) from [<802439bc>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243940>] (__warn) from [<80243ca8>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:8202fe58 r6:e06a5a7c r5:85190000 r4:00000000 [<80243ac4>] (warn_slowpath_fmt) from [<8081fb98>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84e16000 r8:81a02b44 r7:82058f68 r6:828c449c r5:e06a5b24 r4:8260ce58 [<8081fad4>] (debug_print_object) from [<80821438>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8081fad4>] (debug_print_object) from [<80821438>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:84e16800 r7:84e167ac r6:00000100 r5:00000003 r4:00000000 [<808211e4>] (debug_check_no_obj_freed) from [<804b60ac>] (slab_free_hook mm/slub.c:2088 [inline]) [<808211e4>] (debug_check_no_obj_freed) from [<804b60ac>] (slab_free mm/slub.c:4353 [inline]) [<808211e4>] (debug_check_no_obj_freed) from [<804b60ac>] (kfree+0x19c/0x33c mm/slub.c:4463) r10:82779240 r9:84e78c80 r8:84e16000 r7:8045db18 r6:82c023c0 r5:ddea8a40 r4:84e16000 [<804b5f10>] (kfree) from [<8045db18>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82779240 r9:84e78c80 r8:84e16000 r7:00000000 r6:84f0e9c0 r5:853ebb80 r4:84e16000 [<8045daec>] (kvfree) from [<813fd06c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10902) r5:853ebb80 r4:84e16000 [<813fd050>] (netdev_freemem) from [<81438820>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<814387f4>] (netdev_release) from [<80a59494>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:853ebb80 r4:84e163b8 [<80a5945c>] (device_release) from [<818a30d8>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a5945c>] (device_release) from [<818a30d8>] (kobject_release lib/kobject.c:720 [inline]) [<80a5945c>] (device_release) from [<818a30d8>] (kref_put include/linux/kref.h:65 [inline]) [<80a5945c>] (device_release) from [<818a30d8>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b4939c r4:84e163b8 [<818a3010>] (kobject_put) from [<80a5971c>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:84e79400 r6:84e1610c r5:84e16000 r4:00000000 [<80a59704>] (put_device) from [<813ee1fc>] (free_netdev+0x10c/0x18c net/core/dev.c:11099) [<813ee0f0>] (free_netdev) from [<80d2c64c>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84e16774 r5:84e16660 r4:00000000 [<80d2c5a0>] (usbnet_disconnect) from [<80d8ad28>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:84e79430 r6:82779240 r5:00000000 r4:84e79400 [<80d8aca4>] (usb_unbind_interface) from [<80a61564>] (device_remove drivers/base/dd.c:568 [inline]) [<80d8aca4>] (usb_unbind_interface) from [<80a61564>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:84e78c80 r9:828f4d44 r8:00000044 r7:84e79474 r6:82779240 r5:00000000 r4:84e79430 [<80a61500>] (device_remove) from [<80a62a7c>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a61500>] (device_remove) from [<80a62a7c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:84e79430 [<80a628f0>] (device_release_driver_internal) from [<80a62b08>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828f4d44 r8:82ed1f40 r7:82ed1f38 r6:82ed1f0c r5:84e79430 r4:82ed1f30 [<80a62af0>] (device_release_driver) from [<80a60c08>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a60b3c>] (bus_remove_device) from [<80a5ac98>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828f4d44 r8:84e79400 r7:85190000 r6:84ef07c8 r5:04208060 r4:84e79430 [<80a5ab3c>] (device_del) from [<80d8878c>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:84e79400 r7:84e78c00 r6:84ef07c8 r5:00000001 r4:00000038 [<80d886b0>] (usb_disable_device) from [<80d7d5fc>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:8412da00 r8:84e78cc4 r7:83ebec00 r6:84e78c80 r5:84e78c00 r4:60000013 [<80d7d510>] (usb_disconnect) from [<80d802ac>] (hub_port_connect drivers/usb/core/hub.c:5362 [inline]) [<80d7d510>] (usb_disconnect) from [<80d802ac>] (hub_port_connect_change drivers/usb/core/hub.c:5662 [inline]) [<80d7d510>] (usb_disconnect) from [<80d802ac>] (port_event drivers/usb/core/hub.c:5822 [inline]) [<80d7d510>] (usb_disconnect) from [<80d802ac>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5904) r10:00000001 r9:00000100 r8:83d91500 r7:84e78c00 r6:83ebe400 r5:83ebee10 r4:00000001 [<80d7f434>] (hub_event) from [<802669bc>] (process_one_work+0x1b8/0x504 kernel/workqueue.c:3267) r10:82f93205 r9:85190000 r8:00000080 r7:dddd00c0 r6:82f93200 r5:83d91500 r4:845e2680 [<80266804>] (process_one_work) from [<802676dc>] (process_scheduled_works kernel/workqueue.c:3348 [inline]) [<80266804>] (process_one_work) from [<802676dc>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3429) r10:85190000 r9:845e26ac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:845e2680 [<802674f0>] (worker_thread) from [<802700ec>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:eb21de90 r8:850cbe80 r7:845e2680 r6:802674f0 r5:85190000 r4:850cb2c0 [<8026ffe8>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xe06a5fb0 to 0xe06a5ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026ffe8 r4:850cb2c0 Rebooting in 86400 seconds..