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

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
0 496 2 :

['tdefl_get_adler32', 'tdefl_compress']

0 496 mz_deflate call site: 00032 /src/miniz/build/amalgamation/miniz.c:282
0 268 1 :

['tdefl_compress_block']

0 268 tdefl_flush_block call site: 00016 /src/miniz/build/amalgamation/miniz.c:1325
0 0 None 0 834 tdefl_compress call site: 00012 /src/miniz/build/amalgamation/miniz.c:1944
0 0 None 0 198 mz_inflate call site: 00039 /src/miniz/build/amalgamation/miniz.c:467
0 0 None 0 5 tdefl_compress call site: 00030 /src/miniz/build/amalgamation/miniz.c:1970
0 0 None 0 4 mz_compress2 call site: 00011 /src/miniz/build/amalgamation/miniz.c:339
0 0 None 0 3 tinfl_decompress call site: 00040 /src/miniz/build/amalgamation/miniz.c:2479
0 0 None 0 0 tdefl_compress call site: 00012 /src/miniz/build/amalgamation/miniz.c:1915
0 0 None 0 0 tdefl_compress call site: 00012 /src/miniz/build/amalgamation/miniz.c:1933
0 0 None 0 0 tdefl_compress call site: 00014 /src/miniz/build/amalgamation/miniz.c:1958
0 0 None 0 0 tdefl_compress call site: 00030 /src/miniz/build/amalgamation/miniz.c:1967
0 0 None 0 0 tdefl_create_comp_flags_from_zip_params call site: 00009 /src/miniz/build/amalgamation/miniz.c:2115

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 mz_compressBound [function] [call site] 00001
2 mz_deflateBound [function] [call site] 00002
1 calloc [call site] 00003
1 calloc [call site] 00004
1 check_compress_level [function] [call site] 00005
2 mz_compress2 [function] [call site] 00006
3 mz_deflateInit [function] [call site] 00007
4 mz_deflateInit2 [function] [call site] 00008
5 tdefl_create_comp_flags_from_zip_params [function] [call site] 00009
5 tdefl_init [function] [call site] 00010
3 mz_deflate [function] [call site] 00011
4 tdefl_compress [function] [call site] 00012
5 tdefl_flush_output_buffer [function] [call site] 00013
5 tdefl_compress_normal [function] [call site] 00014
6 tdefl_flush_block [function] [call site] 00015
7 tdefl_compress_block [function] [call site] 00016
8 tdefl_start_static_block [function] [call site] 00017
9 tdefl_optimize_huffman_table [function] [call site] 00018
10 tdefl_radix_sort_syms [function] [call site] 00019
10 tdefl_calculate_minimum_redundancy [function] [call site] 00020
10 tdefl_huffman_enforce_max_code_size [function] [call site] 00021
9 tdefl_optimize_huffman_table [function] [call site] 00022
8 tdefl_start_dynamic_block [function] [call site] 00023
9 tdefl_optimize_huffman_table [function] [call site] 00024
9 tdefl_optimize_huffman_table [function] [call site] 00025
9 tdefl_optimize_huffman_table [function] [call site] 00026
8 tdefl_compress_lz_codes [function] [call site] 00027
7 tdefl_compress_block [function] [call site] 00028
5 mz_adler32 [function] [call site] 00029
5 tdefl_flush_block [function] [call site] 00030
5 tdefl_flush_output_buffer [function] [call site] 00031
4 tdefl_get_adler32 [function] [call site] 00032
3 mz_deflateEnd [function] [call site] 00033
3 mz_deflateEnd [function] [call site] 00034
2 mz_uncompress [function] [call site] 00035
3 mz_uncompress2 [function] [call site] 00036
4 mz_inflateInit [function] [call site] 00037
5 mz_inflateInit2 [function] [call site] 00038
4 mz_inflate [function] [call site] 00039
5 tinfl_decompress [function] [call site] 00040
6 tinfl_clear_tree [function] [call site] 00041
5 tinfl_decompress [function] [call site] 00042
4 mz_inflateEnd [function] [call site] 00043
4 mz_inflateEnd [function] [call site] 00044
2 __assert_fail [call site] 00045
2 memcmp [call site] 00046
1 check_compress_level [function] [call site] 00047
1 check_compress_level [function] [call site] 00048
1 check_compress_level [function] [call site] 00049
1 check_decompress [function] [call site] 00050
2 write_zlib_header [function] [call site] 00051
2 mz_uncompress [function] [call site] 00052