Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
94	94	1 : View List ['proc_write10_host_data']	255	255	mscd_xfer_cb	call site: 00000	/src/tinyusb/src/class/msc/msc_device.c:418
22	22	4 : View List ['tud_msc_write10_complete_cb', 'prepare_cbw', 'tud_msc_read10_complete_cb', 'tud_msc_scsi_complete_cb']	50	50	mscd_xfer_cb	call site: 00000	/src/tinyusb/src/class/msc/msc_device.c:418
4	4	1 : View List ['invoke_class_control']	4	4	process_control_request	call site: 00034	/src/tinyusb/src/device/usbd.c:774
0	0	None	314	342	mscd_xfer_cb	call site: 00000	/src/tinyusb/src/class/msc/msc_device.c:422
0	0	None	28	28	mscd_xfer_cb	call site: 00000	/src/tinyusb/src/class/msc/msc_device.c:418
0	0	None	0	80	dcd_int_handler	call site: 00009	/src/tinyusb/test/fuzz/dcd_fuzz.cc:58
0	0	None	0	41	usbd_control_xfer_cb	call site: 00088	/src/tinyusb/src/device/usbd_control.c:156
0	0	None	0	41	usbd_control_xfer_cb	call site: 00089	/src/tinyusb/src/device/usbd_control.c:170
0	0	1 : View List ['std::__1::vector >::resize(unsigned long)']	0	40	dcd_int_handler	call site: 00010	/src/tinyusb/test/fuzz/dcd_fuzz.cc:81
0	0	None	0	14	dcd_event_handler	call site: 00011	/src/tinyusb/src/device/usbd.c:1205
0	0	None	0	14	dcd_event_handler	call site: 00011	/src/tinyusb/src/device/usbd.c:1219
0	0	None	0	14	data_stage_xact	call site: 00041	/src/tinyusb/src/device/usbd_control.c:94

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           fuzz_init

[function] [call site] 00001


           tud_rhport_init

[function] [call site] 00002


             tud_inited

[function] [call site] 00003


             tu_fifo_clear

[function] [call site] 00004


             usbd_app_driver_get_cb

[call site] 00005


             dcd_init

[function] [call site] 00006


             dcd_int_enable

[function] [call site] 00007


           dcd_int_handler

[function] [call site] 00008


             __assert_fail

[call site] 00009


             dcd_event_handler

[function] [call site] 00010


               tu_fifo_write

[function] [call site] 00011


                 tu_fifo_full

[function] [call site] 00012


                 _ff_push

[function] [call site] 00013


                 advance_index

[function] [call site] 00014


               tud_event_hook_cb

[function] [call site] 00015


               tud_event_hook_cb

[function] [call site] 00016


               tud_event_hook_cb

[function] [call site] 00017


             dcd_event_handler

[function] [call site] 00018


           tud_task_ext

[function] [call site] 00019


             tud_inited

[function] [call site] 00020


             tu_fifo_read

[function] [call site] 00021


               _tu_fifo_peek

[function] [call site] 00022


                 _ff_pull

[function] [call site] 00023


               advance_index

[function] [call site] 00024


             usbd_reset

[function] [call site] 00025


               configuration_reset

[function] [call site] 00026


               usbd_control_reset

[function] [call site] 00027


             usbd_reset

[function] [call site] 00028


             tud_umount_cb

[function] [call site] 00029


             process_control_request

[function] [call site] 00030


               usbd_control_set_complete_callback

[function] [call site] 00031


               usbd_control_set_complete_callback

[function] [call site] 00032


               tud_vendor_control_xfer_cb

[function] [call site] 00033


               tud_vendor_control_xfer_cb

[function] [call site] 00034


               invoke_class_control

[function] [call site] 00035


                 usbd_control_set_complete_callback

[function] [call site] 00036


               usbd_control_set_request

[function] [call site] 00037


               dcd_set_address

[function] [call site] 00038


                 dcd_edpt_xfer

[function] [call site] 00039


               tud_control_xfer

[function] [call site] 00040


                 data_stage_xact

[function] [call site] 00041


                   usbd_edpt_xfer

[function] [call site] 00042


                     dcd_edpt_xfer

[function] [call site] 00043


                 status_stage_xact

[function] [call site] 00044


                   usbd_edpt_xfer

[function] [call site] 00045


               dcd_sof_enable

[function] [call site] 00046


               dcd_edpt_close_all

[function] [call site] 00047


               configuration_reset

[function] [call site] 00048


               process_set_config

[function] [call site] 00049


                 tud_descriptor_configuration_cb

[function] [call site] 00050


                 tu_edpt_bind_driver

[function] [call site] 00051


               tud_mount_cb

[function] [call site] 00052


               tud_umount_cb

[function] [call site] 00053


               tud_control_status

[function] [call site] 00054


                 status_stage_xact

[function] [call site] 00055


               process_get_descriptor

[function] [call site] 00056


                 tud_descriptor_device_cb

[function] [call site] 00057


                 tud_control_xfer

[function] [call site] 00058


                 tud_descriptor_bos_cb

[function] [call site] 00059


                 tud_control_xfer

[function] [call site] 00060


                 tud_descriptor_configuration_cb

[function] [call site] 00061


                 tud_descriptor_other_speed_configuration_cb

[function] [call site] 00062


                 tud_control_xfer

[function] [call site] 00063


                 tud_descriptor_string_cb

[function] [call site] 00064


                   strlen

[call site] 00065


                 tud_control_xfer

[function] [call site] 00066


                 tud_descriptor_device_qualifier_cb

[function] [call site] 00067


                 tud_control_xfer

[function] [call site] 00068


               tud_control_status

[function] [call site] 00069


               tud_control_status

[function] [call site] 00070


               tud_control_xfer

[function] [call site] 00071


               invoke_class_control

[function] [call site] 00072


               usbd_control_set_complete_callback

[function] [call site] 00073


               tud_control_xfer

[function] [call site] 00074


               tud_control_status

[function] [call site] 00075


               invoke_class_control

[function] [call site] 00076


               usbd_edpt_stalled

[function] [call site] 00077


               tud_control_xfer

[function] [call site] 00078


               usbd_edpt_clear_stall

[function] [call site] 00079


                 dcd_edpt_clear_stall

[function] [call site] 00080


               usbd_edpt_stall

[function] [call site] 00081


                 dcd_edpt_stall

[function] [call site] 00082


               invoke_class_control

[function] [call site] 00083


               usbd_control_set_complete_callback

[function] [call site] 00084


               tud_control_status

[function] [call site] 00085


             dcd_edpt_stall

[function] [call site] 00086


             dcd_edpt_stall

[function] [call site] 00087


             usbd_control_xfer_cb

[function] [call site] 00088


               dcd_edpt0_status_complete

[function] [call site] 00089


               status_stage_xact

[function] [call site] 00090


               dcd_edpt_stall

[function] [call site] 00091


               dcd_edpt_stall

[function] [call site] 00092


               data_stage_xact

[function] [call site] 00093


             tud_suspend_cb

[function] [call site] 00094


             tud_resume_cb

[function] [call site] 00095


             tud_sof_cb

[function] [call site] 00096


           cdc_task

[function] [call site] 00097


             __assert_fail

[call site] 00098


             tud_cdc_n_connected

[function] [call site] 00099


               tud_mounted

[function] [call site] 00100


               tud_suspended

[function] [call site] 00101


             tud_cdc_n_get_line_state

[function] [call site] 00102


             tud_cdc_n_get_line_coding

[function] [call site] 00103


             tud_cdc_n_set_wanted_char

[function] [call site] 00104


             tud_cdc_n_available

[function] [call site] 00105


               tu_fifo_count

[function] [call site] 00106


             tud_cdc_n_read

[function] [call site] 00107


               tu_fifo_read_n

[function] [call site] 00108


                 _tu_fifo_read_n

[function] [call site] 00109


                   _tu_fifo_peek_n

[function] [call site] 00110


                     _ff_pull_n

[function] [call site] 00111


                   advance_index

[function] [call site] 00112


               _prep_out_transaction

[function] [call site] 00113


                 tud_mounted

[function] [call site] 00114


                 tud_suspended

[function] [call site] 00115


                 tu_fifo_remaining

[function] [call site] 00116


                 usbd_edpt_claim

[function] [call site] 00117


                   tu_edpt_claim

[function] [call site] 00118


                 tu_fifo_remaining

[function] [call site] 00119


                 usbd_edpt_xfer

[function] [call site] 00120


                 usbd_edpt_release

[function] [call site] 00121


                   tu_edpt_release

[function] [call site] 00122


             tud_cdc_n_read

[function] [call site] 00123


             tud_cdc_n_read_flush

[function] [call site] 00124


               tu_fifo_clear

[function] [call site] 00125


               _prep_out_transaction

[function] [call site] 00126


             tud_cdc_n_peek

[function] [call site] 00127


               tu_fifo_peek

[function] [call site] 00128


                 _tu_fifo_peek

[function] [call site] 00129


             tud_cdc_n_write

[function] [call site] 00130


               tu_fifo_write_n

[function] [call site] 00131


                 _tu_fifo_write_n

[function] [call site] 00132


                   advance_index

[function] [call site] 00133


                   _ff_push_n

[function] [call site] 00134


                   advance_index

[function] [call site] 00135


               tu_fifo_count

[function] [call site] 00136


               tud_cdc_n_write_flush

[function] [call site] 00137


                 tud_mounted

[function] [call site] 00138


                 tud_suspended

[function] [call site] 00139


                 tu_fifo_count

[function] [call site] 00140


                 usbd_edpt_claim

[function] [call site] 00141


                 tu_fifo_read_n

[function] [call site] 00142


                 usbd_edpt_xfer

[function] [call site] 00143


                 usbd_edpt_release

[function] [call site] 00144


             tud_cdc_n_write

[function] [call site] 00145


             strlen

[call site] 00146


             tud_cdc_n_write

[function] [call site] 00147


             tud_cdc_n_write_flush

[function] [call site] 00148


             tud_cdc_n_write_available

[function] [call site] 00149


               tu_fifo_remaining

[function] [call site] 00150


             tud_cdc_n_write_clear

[function] [call site] 00151


               tu_fifo_clear

[function] [call site] 00152