Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
6	85	tud_task_ext	call site: 00085	usbd_control_xfer_cb
5	70	process_get_status	call site: 00070	process_get_status
4	43	tud_control_xfer	call site: 00043	configuration_reset
3	113	stream_xfer	call site: 00113	stream_release
2	11	dcd_int_handler	call site: 00011	tu_fifo_write_n_access_mode
2	15	tu_fifo_write_n_access_mode	call site: 00015	tud_event_hook_cb
2	49	process_set_config	call site: 00049	tu_bind_driver_to_ep_itf
2	81	usbd_edpt_stall	call site: 00081	invoke_class_control
2	93	tud_task_ext	call site: 00093	cdc_task
1	8	tud_rhport_init	call site: 00008	dcd_int_handler
1	20	dcd_int_handler	call site: 00020	tud_task_ext
1	22	tud_task_ext	call site: 00022	tu_fifo_read_n_access_mode

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           fuzz_init

[function] [call site] 00001


           tusb_rhport_init

[function] [call site] 00002


             tud_rhport_init

[function] [call site] 00003


               tud_inited

[function] [call site] 00004


               tu_fifo_clear

[function] [call site] 00005


               usbd_app_driver_get_cb

[function] [call site] 00006


               dcd_init

[function] [call site] 00007


               dcd_int_enable

[function] [call site] 00008


           dcd_int_handler

[function] [call site] 00009


             __assert_fail

[call site] 00010


             dcd_event_handler

[function] [call site] 00011


               tu_fifo_write_n_access_mode

[function] [call site] 00012


                 advance_index

[function] [call site] 00013


                 ff_push_n

[function] [call site] 00014


                 advance_index

[function] [call site] 00015


               tud_event_hook_cb

[function] [call site] 00016


               tud_event_hook_cb

[function] [call site] 00017


               tud_event_hook_cb

[function] [call site] 00018


             dcd_event_handler

[function] [call site] 00019


             dcd_event_handler

[function] [call site] 00020


           tud_task_ext

[function] [call site] 00021


             tud_inited

[function] [call site] 00022


             tu_fifo_read_n_access_mode

[function] [call site] 00023


               tu_fifo_peek_n_access_mode

[function] [call site] 00024


                 correct_read_index

[function] [call site] 00025


                 ff_pull_n

[function] [call site] 00026


               advance_index

[function] [call site] 00027


             usbd_reset

[function] [call site] 00028


               configuration_reset

[function] [call site] 00029


             usbd_reset

[function] [call site] 00030


             usbd_reset

[function] [call site] 00031


             tud_umount_cb

[function] [call site] 00032


             process_setup_received

[function] [call site] 00033


               tud_vendor_control_xfer_cb

[function] [call site] 00034


               invoke_class_control

[function] [call site] 00035


               process_std_device_request

[function] [call site] 00036


                 dcd_set_address

[function] [call site] 00037


                   dcd_edpt_xfer

[function] [call site] 00038


                 tud_control_xfer

[function] [call site] 00039


                   data_stage_xact

[function] [call site] 00040


                     usbd_edpt_xfer

[function] [call site] 00041


                       dcd_edpt_xfer

[function] [call site] 00042


                   usbd_edpt_xfer

[function] [call site] 00043


                 dcd_sof_enable

[function] [call site] 00044


                 dcd_edpt_close_all

[function] [call site] 00045


                 configuration_reset

[function] [call site] 00046


                 tud_umount_cb

[function] [call site] 00047


                 process_set_config

[function] [call site] 00048


                   tud_descriptor_configuration_cb

[function] [call site] 00049


                   tu_bind_driver_to_ep_itf

[function] [call site] 00050


                 tud_mount_cb

[function] [call site] 00051


                 tud_control_status

[function] [call site] 00052


                   usbd_edpt_xfer

[function] [call site] 00053


                 process_get_descriptor

[function] [call site] 00054


                   tud_descriptor_device_cb

[function] [call site] 00055


                   tud_control_xfer

[function] [call site] 00056


                   tud_descriptor_bos_cb

[function] [call site] 00057


                   tud_control_xfer

[function] [call site] 00058


                   tud_descriptor_configuration_cb

[function] [call site] 00059


                   tud_descriptor_other_speed_configuration_cb

[function] [call site] 00060


                   tud_control_xfer

[function] [call site] 00061


                   tud_descriptor_string_cb

[function] [call site] 00062


                     strlen

[call site] 00063


                   tud_control_xfer

[function] [call site] 00064


                   tud_descriptor_device_qualifier_cb

[function] [call site] 00065


                   tud_control_xfer

[function] [call site] 00066


                 tud_control_status

[function] [call site] 00067


                 tud_control_status

[function] [call site] 00068


                 process_get_status

[function] [call site] 00069


                   tud_control_xfer

[function] [call site] 00070


               invoke_class_control

[function] [call site] 00071


               tud_control_xfer

[function] [call site] 00072


               tud_control_status

[function] [call site] 00073


               process_get_status

[function] [call site] 00074


               invoke_class_control

[function] [call site] 00075


               usbd_edpt_stalled

[function] [call site] 00076


               process_get_status

[function] [call site] 00077


               usbd_edpt_clear_stall

[function] [call site] 00078


                 dcd_edpt_clear_stall

[function] [call site] 00079


               usbd_edpt_stall

[function] [call site] 00080


                 dcd_edpt_stall

[function] [call site] 00081


               invoke_class_control

[function] [call site] 00082


               tud_control_status

[function] [call site] 00083


             dcd_edpt_stall

[function] [call site] 00084


             dcd_edpt_stall

[function] [call site] 00085


             usbd_control_xfer_cb

[function] [call site] 00086


               dcd_edpt0_status_complete

[function] [call site] 00087


               usbd_edpt_xfer

[function] [call site] 00088


               dcd_edpt_stall

[function] [call site] 00089


               dcd_edpt_stall

[function] [call site] 00090


               data_stage_xact

[function] [call site] 00091


             tud_suspend_cb

[function] [call site] 00092


             tud_resume_cb

[function] [call site] 00093


             tud_sof_cb

[function] [call site] 00094


           cdc_task

[function] [call site] 00095


             __assert_fail

[call site] 00096


             tud_cdc_n_connected

[function] [call site] 00097


               tud_mounted

[function] [call site] 00098


               tud_suspended

[function] [call site] 00099


             tud_cdc_n_get_line_state

[function] [call site] 00100


             tud_cdc_n_get_line_coding

[function] [call site] 00101


             tud_cdc_n_set_wanted_char

[function] [call site] 00102


             tud_cdc_n_available

[function] [call site] 00103


             tud_cdc_n_read

[function] [call site] 00104


               tu_edpt_stream_read

[function] [call site] 00105


                 tu_fifo_read_n_access_mode

[function] [call site] 00106


                 tu_edpt_stream_read_xfer

[function] [call site] 00107


                   stream_claim

[function] [call site] 00108


                     usbd_edpt_claim

[function] [call site] 00109


                       tu_edpt_claim

[function] [call site] 00110


                   stream_xfer

[function] [call site] 00111


                     usbd_edpt_xfer_fifo

[function] [call site] 00112


                     usbd_edpt_xfer

[function] [call site] 00113


                   stream_release

[function] [call site] 00114


                     usbd_edpt_release

[function] [call site] 00115


                       tu_edpt_release

[function] [call site] 00116


             tud_cdc_n_read

[function] [call site] 00117


             tud_cdc_n_read_flush

[function] [call site] 00118


               tu_fifo_clear

[function] [call site] 00119


               tu_edpt_stream_read_xfer

[function] [call site] 00120


             tud_cdc_n_peek

[function] [call site] 00121


               tu_fifo_peek

[function] [call site] 00122


                 ff_peek_local

[function] [call site] 00123


                   correct_read_index

[function] [call site] 00124


             tud_cdc_n_write

[function] [call site] 00125


               tu_edpt_stream_write

[function] [call site] 00126


                 tu_fifo_write_n_access_mode

[function] [call site] 00127


                 tu_edpt_stream_write_xfer

[function] [call site] 00128


                   stream_claim

[function] [call site] 00129


                   tu_fifo_read_n_access_mode

[function] [call site] 00130


                   stream_xfer

[function] [call site] 00131


                   stream_release

[function] [call site] 00132


             tud_cdc_n_write

[function] [call site] 00133


             strlen

[call site] 00134


             tud_cdc_n_write

[function] [call site] 00135


             tud_cdc_n_write_flush

[function] [call site] 00136


               tu_edpt_stream_write_xfer

[function] [call site] 00137


             tud_cdc_n_write_available

[function] [call site] 00138


               tu_edpt_stream_write_available

[function] [call site] 00139


             tud_cdc_n_write_clear

[function] [call site] 00140


               tu_fifo_clear

[function] [call site] 00141