Fuzz introspector
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzzer details

Fuzzer: fuzz_connection

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is
Color Runtime hitcount Callsite count Percentage
red 0 382 87.6%
gold [1:9] 0 0.0%
yellow [10:29] 0 0.0%
greenyellow [30:49] 0 0.0%
lawngreen 50+ 54 12.3%
All colors 436 100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
353 70 pymysql.connections.Connection._read_bytes call site: 00070 pymysql.cursors.Cursor.execute
14 27 pymysql.connections.Connection.__init__ call site: 00027 pymysql.connections.Connection._create_ssl_ctx
7 49 pymysql.connections.Connection.__init__ call site: 00049 pymysql.connections.Connection.connect
2 14 pymysql.optionfile.Parser.get call site: 00014 pymysql.optionfile.Parser.__remove_quotes
2 66 pymysql.connections.Connection._read_packet call site: 00066 pymysql.connections.Connection._force_close
2 425 pymysql.connections.Connection.connect call site: 00425 traceback.format_exc
1 6 pymysql.connections.Connection.__init__ call site: 00006 sys.platform.startswith
1 57 pymysql.connections.Connection.connect call site: 00057 .print

Runtime coverage analysis

Covered functions
Functions that are reachable but not covered
Reachable functions
Percentage of reachable functions covered
NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.
Function name source code lines source lines hit percentage hit

Files reached

filename functions hit
/ 1
...fuzz_connection 13
pymysql.connections 130
pymysql.optionfile 4
pymysql.charset 1
pymysql.protocol 25
pymysql._auth 36
pymysql.cursors 15
pymysql.converters 4

Files and Directories in report