Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
54	42	usbd_edpt_xfer	call site: 00042	cdc_task
13	28	tud_task_ext	call site: 00028	process_control_request
9	113	tu_edpt_stream_read_xfer	call site: 00113	tud_cdc_n_read
4	142	cdc_task	call site: 00142	tud_cdc_n_write_flush
3	136	tu_edpt_stream_write_xfer	call site: 00136	stream_xfer
2	13	tu_fifo_write	call site: 00013	tud_event_hook_cb
2	108	tu_fifo_read_n_access_mode	call site: 00108	ff_pull_n
1	8	tud_rhport_init	call site: 00008	dcd_int_handler
1	11	dcd_int_handler	call site: 00011	tu_fifo_write
1	17	dcd_int_handler	call site: 00017	tud_task_ext
1	21	tu_fifo_read	call site: 00021	correct_read_index
1	100	tud_cdc_n_connected	call site: 00100	tud_cdc_n_get_line_state

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

[function] [call site] 00012


                 advance_index

[function] [call site] 00013


               tud_event_hook_cb

[function] [call site] 00014


               tud_event_hook_cb

[function] [call site] 00015


               tud_event_hook_cb

[function] [call site] 00016


             dcd_event_handler

[function] [call site] 00017


           tud_task_ext

[function] [call site] 00018


             tud_inited

[function] [call site] 00019


             tu_fifo_read

[function] [call site] 00020


               ff_peek_local

[function] [call site] 00021


                 correct_read_index

[function] [call site] 00022


               advance_index

[function] [call site] 00023


             usbd_reset

[function] [call site] 00024


               configuration_reset

[function] [call site] 00025


               usbd_control_reset

[function] [call site] 00026


             usbd_reset

[function] [call site] 00027


             tud_umount_cb

[function] [call site] 00028


             process_control_request

[function] [call site] 00029


               usbd_control_set_complete_callback

[function] [call site] 00030


               usbd_control_set_complete_callback

[function] [call site] 00031


               tud_vendor_control_xfer_cb

[function] [call site] 00032


               tud_vendor_control_xfer_cb

[function] [call site] 00033


               invoke_class_control

[function] [call site] 00034


                 usbd_control_set_complete_callback

[function] [call site] 00035


               usbd_control_set_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


                 status_stage_xact

[function] [call site] 00043


                   usbd_edpt_xfer

[function] [call site] 00044


               dcd_sof_enable

[function] [call site] 00045


               dcd_edpt_close_all

[function] [call site] 00046


               configuration_reset

[function] [call site] 00047


               tud_umount_cb

[function] [call site] 00048


               process_set_config

[function] [call site] 00049


                 tud_descriptor_configuration_cb

[function] [call site] 00050


                 tu_bind_driver_to_ep_itf

[function] [call site] 00051


               tud_mount_cb

[function] [call site] 00052


               tud_control_status

[function] [call site] 00053


                 status_stage_xact

[function] [call site] 00054


               process_get_descriptor

[function] [call site] 00055


                 tud_descriptor_device_cb

[function] [call site] 00056


                 tud_control_xfer

[function] [call site] 00057


                 tud_descriptor_bos_cb

[function] [call site] 00058


                 tud_control_xfer

[function] [call site] 00059


                 tud_descriptor_configuration_cb

[function] [call site] 00060


                 tud_descriptor_other_speed_configuration_cb

[function] [call site] 00061


                 tud_control_xfer

[function] [call site] 00062


                 tud_descriptor_string_cb

[function] [call site] 00063


                   strlen

[call site] 00064


                 tud_control_xfer

[function] [call site] 00065


                 tud_descriptor_device_qualifier_cb

[function] [call site] 00066


                 tud_control_xfer

[function] [call site] 00067


               tud_control_status

[function] [call site] 00068


               tud_control_status

[function] [call site] 00069


               tud_control_xfer

[function] [call site] 00070


               invoke_class_control

[function] [call site] 00071


               usbd_control_set_complete_callback

[function] [call site] 00072


               tud_control_xfer

[function] [call site] 00073


               tud_control_status

[function] [call site] 00074


               invoke_class_control

[function] [call site] 00075


               usbd_edpt_stalled

[function] [call site] 00076


               tud_control_xfer

[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


               usbd_control_set_complete_callback

[function] [call site] 00083


               tud_control_status

[function] [call site] 00084


             dcd_edpt_stall

[function] [call site] 00085


             dcd_edpt_stall

[function] [call site] 00086


             usbd_control_xfer_cb

[function] [call site] 00087


               dcd_edpt0_status_complete

[function] [call site] 00088


               status_stage_xact

[function] [call site] 00089


               dcd_edpt_stall

[function] [call site] 00090


               dcd_edpt_stall

[function] [call site] 00091


               data_stage_xact

[function] [call site] 00092


             tud_suspend_cb

[function] [call site] 00093


             tud_resume_cb

[function] [call site] 00094


             tud_sof_cb

[function] [call site] 00095


           cdc_task

[function] [call site] 00096


             __assert_fail

[call site] 00097


             tud_cdc_n_connected

[function] [call site] 00098


               tud_mounted

[function] [call site] 00099


               tud_suspended

[function] [call site] 00100


             tud_cdc_n_get_line_state

[function] [call site] 00101


             tud_cdc_n_get_line_coding

[function] [call site] 00102


             tud_cdc_n_set_wanted_char

[function] [call site] 00103


             tud_cdc_n_available

[function] [call site] 00104


             tud_cdc_n_read

[function] [call site] 00105


               tu_edpt_stream_read

[function] [call site] 00106


                 tu_fifo_read_n_access_mode

[function] [call site] 00107


                   tu_fifo_peek_n_access_mode

[function] [call site] 00108


                     correct_read_index

[function] [call site] 00109


                     ff_pull_n

[function] [call site] 00110


                   advance_index

[function] [call site] 00111


                 tu_edpt_stream_read_xfer

[function] [call site] 00112


                   stream_claim

[function] [call site] 00113


                     usbd_edpt_claim

[function] [call site] 00114


                       tu_edpt_claim

[function] [call site] 00115


                   stream_xfer

[function] [call site] 00116


                     usbd_edpt_xfer_fifo

[function] [call site] 00117


                     usbd_edpt_xfer

[function] [call site] 00118


                   stream_release

[function] [call site] 00119


                     usbd_edpt_release

[function] [call site] 00120


                       tu_edpt_release

[function] [call site] 00121


             tud_cdc_n_read

[function] [call site] 00122


             tud_cdc_n_read_flush

[function] [call site] 00123


               tu_fifo_clear

[function] [call site] 00124


               tu_edpt_stream_read_xfer

[function] [call site] 00125


             tud_cdc_n_peek

[function] [call site] 00126


               tu_fifo_peek

[function] [call site] 00127


                 ff_peek_local

[function] [call site] 00128


             tud_cdc_n_write

[function] [call site] 00129


               tu_edpt_stream_write

[function] [call site] 00130


                 tu_fifo_write_n_access_mode

[function] [call site] 00131


                   advance_index

[function] [call site] 00132


                   ff_push_n

[function] [call site] 00133


                   advance_index

[function] [call site] 00134


                 tu_edpt_stream_write_xfer

[function] [call site] 00135


                   stream_claim

[function] [call site] 00136


                   tu_fifo_read_n_access_mode

[function] [call site] 00137


                   stream_xfer

[function] [call site] 00138


                   stream_release

[function] [call site] 00139


             tud_cdc_n_write

[function] [call site] 00140


             strlen

[call site] 00141


             tud_cdc_n_write

[function] [call site] 00142


             tud_cdc_n_write_flush

[function] [call site] 00143


               tu_edpt_stream_write_xfer

[function] [call site] 00144


             tud_cdc_n_write_available

[function] [call site] 00145


               tu_edpt_stream_write_available

[function] [call site] 00146


             tud_cdc_n_write_clear

[function] [call site] 00147


               tu_fifo_clear

[function] [call site] 00148