usb 1-1: USB disconnect, device number 73 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: 7 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 851f0fac 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: 7 Comm: kworker/0:0 Not tainted 6.9.0-rc7-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818a377c>] (dump_backtrace) from [<818a3878>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fcf004 [<818a3860>] (show_stack) from [<818c0fb4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818a3860>] (show_stack) from [<818c0fb4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818c0f60>] (dump_stack_lvl) from [<818c0ff4>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285ad18 [<818c0fdc>] (dump_stack) from [<818a4320>] (panic+0x120/0x358 kernel/panic.c:348) [<818a4200>] (panic) from [<802436ac>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818a4200>] (panic) from [<802436ac>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fb7d44 r0:81fbf8e8 r7:8080ac48 [<80243638>] (check_panic_on_warn) from [<802438a0>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243824>] (__warn) from [<80243b8c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:8201b914 r6:df835a7c r5:82e2c800 r4:00000000 [<802439a8>] (warn_slowpath_fmt) from [<8080ac48>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:851f0800 r8:81a02b44 r7:820438c4 r6:828be454 r5:df835b24 r4:8260ce18 [<8080ab84>] (debug_print_object) from [<8080c4e0>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080ab84>] (debug_print_object) from [<8080c4e0>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:851f1000 r7:851f0fac r6:00000100 r5:00000003 r4:00000000 [<8080c28c>] (debug_check_no_obj_freed) from [<804b2fd4>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080c28c>] (debug_check_no_obj_freed) from [<804b2fd4>] (slab_free mm/slub.c:4286 [inline]) [<8080c28c>] (debug_check_no_obj_freed) from [<804b2fd4>] (kfree+0x1a0/0x340 mm/slub.c:4396) r10:82775a48 r9:8422f480 r8:851f0800 r7:8045ac9c r6:82c023c0 r5:ddeb15c0 r4:851f0800 [<804b2e34>] (kfree) from [<8045ac9c>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a48 r9:8422f480 r8:851f0800 r7:00000000 r6:84c30900 r5:84feae80 r4:851f0800 [<8045ac70>] (kvfree) from [<813dd424>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10803) r5:84feae80 r4:851f0800 [<813dd408>] (netdev_freemem) from [<814184e0>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<814184b4>] (netdev_release) from [<80a41310>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:84feae80 r4:851f0bb8 [<80a412d8>] (device_release) from [<8187d6e0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a412d8>] (device_release) from [<8187d6e0>] (kobject_release lib/kobject.c:720 [inline]) [<80a412d8>] (device_release) from [<8187d6e0>] (kref_put include/linux/kref.h:65 [inline]) [<80a412d8>] (device_release) from [<8187d6e0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b48984 r4:851f0bb8 [<8187d618>] (kobject_put) from [<80a41598>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:8422e400 r6:851f090c r5:851f0800 r4:00000000 [<80a41580>] (put_device) from [<813ce70c>] (free_netdev+0x108/0x188 net/core/dev.c:10999) [<813ce604>] (free_netdev) from [<80d12020>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:851f0f74 r5:851f0e60 r4:00000000 [<80d11f74>] (usbnet_disconnect) from [<80d6d114>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8422e430 r6:82775a48 r5:00000000 r4:8422e400 [<80d6d090>] (usb_unbind_interface) from [<80a493ec>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6d090>] (usb_unbind_interface) from [<80a493ec>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:8422f480 r9:828eecfc r8:00000044 r7:8422e474 r6:82775a48 r5:00000000 r4:8422e430 [<80a49388>] (device_remove) from [<80a4a904>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a49388>] (device_remove) from [<80a4a904>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:8422e430 [<80a4a778>] (device_release_driver_internal) from [<80a4a990>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eecfc r8:82f8eb40 r7:82f8eb38 r6:82f8eb0c r5:8422e430 r4:82f8eb30 [<80a4a978>] (device_release_driver) from [<80a48a90>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a489c4>] (bus_remove_device) from [<80a42b14>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828eecfc r8:8422e400 r7:82e2c800 r6:85301c88 r5:04208060 r4:8422e430 [<80a429b8>] (device_del) from [<80d6ab70>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8422e400 r7:8422f400 r6:85301c88 r5:00000001 r4:00000038 [<80d6aa94>] (usb_disable_device) from [<80d5f9dc>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:85233e00 r8:8422f4c4 r7:83e18800 r6:8422f480 r5:8422f400 r4:60000013 [<80d5f8f0>] (usb_disconnect) from [<80d6268c>] (hub_port_connect drivers/usb/core/hub.c:5362 [inline]) [<80d5f8f0>] (usb_disconnect) from [<80d6268c>] (hub_port_connect_change drivers/usb/core/hub.c:5662 [inline]) [<80d5f8f0>] (usb_disconnect) from [<80d6268c>] (port_event drivers/usb/core/hub.c:5822 [inline]) [<80d5f8f0>] (usb_disconnect) from [<80d6268c>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5904) r10:00000001 r9:00000100 r8:836f0d00 r7:8422f400 r6:83e18000 r5:83e18a10 r4:00000001 [<80d61814>] (hub_event) from [<80266868>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3267) r10:82e65805 r9:82e2c800 r8:00000080 r7:dddd00c0 r6:82e65800 r5:836f0d00 r4:82c0be80 [<802666b0>] (process_one_work) from [<8026758c>] (process_scheduled_works kernel/workqueue.c:3348 [inline]) [<802666b0>] (process_one_work) from [<8026758c>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3429) r10:82e2c800 r9:82c0beac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0 r4:82c0be80 [<802673a0>] (worker_thread) from [<802702a0>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df819e60 r8:82cad740 r7:82c0be80 r6:802673a0 r5:82e2c800 r4:82cad140 [<8027019c>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf835fb0 to 0xdf835ff8) 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 r5:8027019c r4:82cad140 Rebooting in 86400 seconds..