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 2 cdc_ncm 1-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.0-1, CDC NCM (NO ZLP) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 48 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514 ODEBUG: free active (active state 0) object: 84e66fac 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: 1 PID: 48 Comm: kworker/1:1 Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: usb_hub_wq hub_event Call trace: [<818a225c>] (dump_backtrace) from [<818a2358>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622e44 r5:00000000 r4:81fcedd0 [<818a2340>] (show_stack) from [<818bfa94>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818a2340>] (show_stack) from [<818bfa94>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818bfa40>] (dump_stack_lvl) from [<818bfad4>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285ad18 [<818bfabc>] (dump_stack) from [<818a2e00>] (panic+0x120/0x358 kernel/panic.c:348) [<818a2ce0>] (panic) from [<802438ec>] (check_panic_on_warn kernel/panic.c:241 [inline]) [<818a2ce0>] (panic) from [<802438ec>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c584 r2:00000001 r1:81fb7b10 r0:81fbf6b4 r7:8080a458 [<80243878>] (check_panic_on_warn) from [<80243ae0>] (__warn+0x7c/0x180 kernel/panic.c:694) [<80243a64>] (__warn) from [<80243dcc>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727) r8:00000009 r7:8201b6e0 r6:df925a7c r5:82fdbc00 r4:00000000 [<80243be8>] (warn_slowpath_fmt) from [<8080a458>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514) r10:00000005 r9:84e66800 r8:81a02b44 r7:82043668 r6:828be454 r5:df925b24 r4:8260ce18 [<8080a394>] (debug_print_object) from [<8080bcf0>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]) [<8080a394>] (debug_print_object) from [<8080bcf0>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019) r8:84e67000 r7:84e66fac r6:00000100 r5:00000003 r4:00000000 [<8080ba9c>] (debug_check_no_obj_freed) from [<804b2c4c>] (slab_free_hook mm/slub.c:2078 [inline]) [<8080ba9c>] (debug_check_no_obj_freed) from [<804b2c4c>] (slab_free mm/slub.c:4280 [inline]) [<8080ba9c>] (debug_check_no_obj_freed) from [<804b2c4c>] (kfree+0x1a0/0x334 mm/slub.c:4390) r10:82775a48 r9:8468ac80 r8:84e66800 r7:8045a914 r6:82c023c0 r5:ddea9580 r4:84e66800 [<804b2aac>] (kfree) from [<8045a914>] (kvfree+0x2c/0x30 mm/util.c:680) r10:82775a48 r9:8468ac80 r8:84e66800 r7:00000000 r6:850c09c0 r5:850c1180 r4:84e66800 [<8045a8e8>] (kvfree) from [<813dc450>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10803) r5:850c1180 r4:84e66800 [<813dc434>] (netdev_freemem) from [<814174bc>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031) [<81417490>] (netdev_release) from [<80a40ac8>] (device_release+0x38/0xa8 drivers/base/core.c:2580) r5:850c1180 r4:84e66bb8 [<80a40a90>] (device_release) from [<8187c1c0>] (kobject_cleanup lib/kobject.c:689 [inline]) [<80a40a90>] (device_release) from [<8187c1c0>] (kobject_release lib/kobject.c:720 [inline]) [<80a40a90>] (device_release) from [<8187c1c0>] (kref_put include/linux/kref.h:65 [inline]) [<80a40a90>] (device_release) from [<8187c1c0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737) r5:81b48984 r4:84e66bb8 [<8187c0f8>] (kobject_put) from [<80a40d50>] (put_device+0x18/0x1c drivers/base/core.c:3828) r7:8468b000 r6:84e6690c r5:84e66800 r4:00000000 [<80a40d38>] (put_device) from [<813cd738>] (free_netdev+0x108/0x188 net/core/dev.c:10999) [<813cd630>] (free_netdev) from [<80d114e0>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636) r6:84e66f74 r5:84e66e60 r4:00000000 [<80d11434>] (usbnet_disconnect) from [<80d6c5c4>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461) r8:00000044 r7:8468b030 r6:82775a48 r5:00000000 r4:8468b000 [<80d6c540>] (usb_unbind_interface) from [<80a48ba4>] (device_remove drivers/base/dd.c:568 [inline]) [<80d6c540>] (usb_unbind_interface) from [<80a48ba4>] (device_remove+0x64/0x6c drivers/base/dd.c:560) r10:8468ac80 r9:828eecfc r8:00000044 r7:8468b074 r6:82775a48 r5:00000000 r4:8468b030 [<80a48b40>] (device_remove) from [<80a4a0bc>] (__device_release_driver drivers/base/dd.c:1270 [inline]) [<80a48b40>] (device_remove) from [<80a4a0bc>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293) r5:00000000 r4:8468b030 [<80a49f30>] (device_release_driver_internal) from [<80a4a148>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316) r9:828eecfc r8:82f52b40 r7:82f52b38 r6:82f52b0c r5:8468b030 r4:82f52b30 [<80a4a130>] (device_release_driver) from [<80a48248>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574) [<80a4817c>] (bus_remove_device) from [<80a422cc>] (device_del+0x15c/0x3bc drivers/base/core.c:3909) r9:828eecfc r8:8468b000 r7:82fdbc00 r6:85121288 r5:04208060 r4:8468b030 [<80a42170>] (device_del) from [<80d6a020>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418) r10:00000000 r9:00000000 r8:8468b000 r7:8468ac00 r6:85121288 r5:00000001 r4:00000038 [<80d69f44>] (usb_disable_device) from [<80d5ee8c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305) r10:00000001 r9:8461d200 r8:8468acc4 r7:83e1ec00 r6:8468ac80 r5:8468ac00 r4:60000113 [<80d5eda0>] (usb_disconnect) from [<80d61b3c>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline]) [<80d5eda0>] (usb_disconnect) from [<80d61b3c>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]) [<80d5eda0>] (usb_disconnect) from [<80d61b3c>] (port_event drivers/usb/core/hub.c:5821 [inline]) [<80d5eda0>] (usb_disconnect) from [<80d61b3c>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903) r10:00000001 r9:00000100 r8:83caaf00 r7:8468ac00 r6:83e1e400 r5:83e1ee10 r4:00000001 [<80d60cc4>] (hub_event) from [<80266638>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3267) r10:82e65a05 r9:82fdbc00 r8:00000180 r7:ddde40c0 r6:82e65a00 r5:83caaf00 r4:82e99100 [<80266480>] (process_one_work) from [<8026735c>] (process_scheduled_works kernel/workqueue.c:3348 [inline]) [<80266480>] (process_one_work) from [<8026735c>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3429) r10:82fdbc00 r9:82e9912c r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:82e99100 [<80267170>] (worker_thread) from [<80270070>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df879e90 r8:82f65480 r7:82e99100 r6:80267170 r5:82fdbc00 r4:82e984c0 [<8026ff6c>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf925fb0 to 0xdf925ff8) 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 r5:8026ff6c r4:82e984c0 Rebooting in 86400 seconds..