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

Fuzzer details

Fuzzer: fuzz_parser

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 72 21.1%
gold [1:9] 40 11.7%
yellow [10:29] 11 3.22%
greenyellow [30:49] 0 0.0%
lawngreen 50+ 218 63.9%
All colors 341 100

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
2 2 1 :

['abort']

2 2 llhttp__internal__run call site: 00067 /src/llhttp/build/c/llhttp.c:3215
0 0 None 126 1228 llhttp__internal__run call site: 00205 /src/llhttp/build/c/llhttp.c:7057
0 0 None 126 1228 llhttp__internal__run call site: 00205 /src/llhttp/build/c/llhttp.c:7093
0 0 None 126 1228 llhttp__internal__run call site: 00205 /src/llhttp/build/c/llhttp.c:7173
0 0 None 126 1228 llhttp__internal__run call site: 00205 /src/llhttp/build/c/llhttp.c:7290
0 0 None 126 1228 llhttp__internal__run call site: 00205 /src/llhttp/build/c/llhttp.c:7356
0 0 None 126 1228 llhttp__internal__run call site: 00234 /src/llhttp/build/c/llhttp.c:8008
0 0 None 126 1228 llhttp__internal__run call site: 00236 /src/llhttp/build/c/llhttp.c:8043
0 0 None 126 1228 llhttp__internal__run call site: 00268 /src/llhttp/build/c/llhttp.c:8464
0 0 None 126 1228 llhttp__internal__run call site: 00269 /src/llhttp/build/c/llhttp.c:8482
0 0 None 126 1228 llhttp__internal__run call site: 00316 /src/llhttp/build/c/llhttp.c:9548
0 0 None 126 1228 llhttp__internal__run call site: 00318 /src/llhttp/build/c/llhttp.c:9566

Runtime coverage analysis

Covered functions
95
Functions that are reachable but not covered
6
Reachable functions
101
Percentage of reachable functions covered
94.06%
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
./test/fuzzers/fuzz_parser.c 2
src/native/api.c 30
build/c/llhttp.c 61
src/native/http.c 5