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 10 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: 4425 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 8b4d67ac 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: 4425 Comm: kworker/0:22 Not tainted 6.8.0-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Backtrace: [<81877f5c>] (dump_backtrace) from [<81878058>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fc441c [<81878040>] (show_stack) from [<818957f4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<81878040>] (show_stack) from [<818957f4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818957a0>] (dump_stack_lvl) from [<81895834>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:82858d18 [<8189581c>] (dump_stack) from [<81878b00>] (panic+0x120/0x358 kernel/panic.c:348) [<818789e0>] (panic) from [<802438cc>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818789e0>] (panic) from [<802438cc>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fad0a4 r0:81fb4c4c r7:8080b478 [<80243858>] (check_panic_on_warn) from [<80243ac0>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243a44>] (__warn) from [<80243dac>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:82010fec r6:e8b6da7c r5:83e95400 r4:00000000 [<80243bc8>] (warn_slowpath_fmt) from [<8080b478>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:8b4d6000 r8:81a02b44 r7:82038ef4 r6:828bc414 r5:e8b6db24 r4:8260ce18 [<8080b3b4>] (debug_print_object) from [<8080cd10>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080b3b4>] (debug_print_object) from [<8080cd10>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:8b4d6800 r7:8b4d67ac r6:00000100 r5:00000003 r4:00000000 [<8080cabc>] (debug_check_no_obj_freed) from [<804b2418>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080cabc>] (debug_check_no_obj_freed) from [<804b2418>] (slab_free mm/slub.c:4280 [inline]) [<8080cabc>] (debug_check_no_obj_freed) from [<804b2418>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a08 r9:844ed080 r8:8b4d6000 r7:8045a574 r6:82c023c0 r5:ddf8fd40 r4:8b4d6000 [<804b2278>] (kfree) from [<8045a574>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a08 r9:844ed080 r8:8b4d6000 r7:00000000 r6:84702840 r5:8ad72a00 r4:8b4d6000 [<8045a548>] (kvfree) from [<813b2784>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797) r5:8ad72a00 r4:8b4d6000 [<813b2768>] (netdev_freemem) from [<813ed7e4>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<813ed7b8>] (netdev_release) from [<80a41540>] (device_release+0x38/0xa8 drivers/base/core.c:2565) r5:8ad72a00 r4:8b4d63b8 [<80a41508>] (device_release) from [<81851ec0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a41508>] (device_release) from [<81851ec0>] (kobject_release lib/kobject.c:720 [inline]) [<80a41508>] (device_release) from [<81851ec0>] (kref_put include/linux/kref.h:65 [inline]) [<80a41508>] (device_release) from [<81851ec0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b48594 r4:8b4d63b8 [<81851df8>] (kobject_put) from [<80a417c8>] (put_device+0x18/0x1c drivers/base/core.c:3813) r7:844ec400 r6:8b4d610c r5:8b4d6000 r4:00000000 [<80a417b0>] (put_device) from [<813a3ad0>] (free_netdev+0x108/0x188 net/core/dev.c:10993) [<813a39c8>] (free_netdev) from [<80d10448>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:8b4d6774 r5:8b4d6660 r4:00000000 [<80d1039c>] (usbnet_disconnect) from [<80d6b3c0>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:844ec430 r6:82775a08 r5:00000000 r4:844ec400 [<80d6b33c>] (usb_unbind_interface) from [<80a4961c>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6b33c>] (usb_unbind_interface) from [<80a4961c>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:844ed080 r9:828eccc4 r8:00000044 r7:844ec474 r6:82775a08 r5:00000000 r4:844ec430 [<80a495b8>] (device_remove) from [<80a4ab34>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a495b8>] (device_remove) from [<80a4ab34>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:844ec430 [<80a4a9a8>] (device_release_driver_internal) from [<80a4abc0>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eccc4 r8:82f51940 r7:82f51938 r6:82f5190c r5:844ec430 r4:82f51930 [<80a4aba8>] (device_release_driver) from [<80a48cc0>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a48bf4>] (bus_remove_device) from [<80a42d44>] (device_del+0x15c/0x3bc drivers/base/core.c:3894) r9:828eccc4 r8:844ec400 r7:83e95400 r6:8ac26188 r5:04208060 r4:844ec430 [<80a42be8>] (device_del) from [<80d68e1c>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:844ec400 r7:844ed000 r6:8ac26188 r5:00000001 r4:00000038 [<80d68d40>] (usb_disable_device) from [<80d5dc88>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2296) r10:00000001 r9:84501400 r8:844ed0c4 r7:83eeb400 r6:844ed080 r5:844ed000 r4:60000013 [<80d5db9c>] (usb_disconnect) from [<80d60938>] (hub_port_connect drivers/usb/core/hub.c:5352 [inline]) [<80d5db9c>] (usb_disconnect) from [<80d60938>] (hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]) [<80d5db9c>] (usb_disconnect) from [<80d60938>] (port_event drivers/usb/core/hub.c:5812 [inline]) [<80d5db9c>] (usb_disconnect) from [<80d60938>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5894) r10:00000001 r9:00000100 r8:83bdcb00 r7:844ed000 r6:83eeac00 r5:83eeb610 r4:00000001 [<80d5fac0>] (hub_event) from [<802665bc>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254) r10:82e65405 r9:83e95400 r8:00000080 r7:dddcff00 r6:82e65400 r5:83bdcb00 r4:8b34f700 [<80266404>] (process_one_work) from [<802672e0>] (process_scheduled_works kernel/workqueue.c:3335 [inline]) [<80266404>] (process_one_work) from [<802672e0>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3416) r10:83e95400 r9:8b34f72c r8:61c88647 r7:dddcff20 r6:82604d40 r5:dddcff00 r4:8b34f700 [<802670f4>] (worker_thread) from [<8026fff4>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:e09e1e90 r8:8b370a80 r7:8b34f700 r6:802670f4 r5:83e95400 r4:8b343c80 [<8026fef0>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xe8b6dfb0 to 0xe8b6dff8) 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 r5:8026fef0 r4:8b343c80 Rebooting in 86400 seconds..