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

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
13 94 deflate call site: 00094 crc32
8 154 deflate_rle call site: 00154 _tr_flush_block
8 228 inflate call site: 00228 crc32
7 52 crc32_z call site: 00052 byte_swap
7 69 gz_comp call site: 00069 deflateReset
5 87 _tr_flush_bits call site: 00087 adler32
4 78 gz_comp call site: 00078 gz_error
3 18 gz_open call site: 00018 fcntl
3 110 _tr_stored_block call site: 00110 read_buf
3 114 read_buf call site: 00114 read_buf
3 163 deflate call site: 00163 gz_comp
3 216 gz_load call site: 00216 __errno_location

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 fopen [call site] 00001
1 fwrite [call site] 00002
1 error [function] [call site] 00003
2 fprintf [call site] 00004
1 fclose [call site] 00005
1 error [function] [call site] 00006
1 snprintf [call site] 00007
1 file_compress [function] [call site] 00008
2 strlen [call site] 00009
2 fprintf [call site] 00010
2 snprintf [call site] 00011
2 fopen [call site] 00012
2 perror [call site] 00013
2 gzopen [function] [call site] 00014
3 gz_open [function] [call site] 00015
4 strlen [call site] 00016
4 snprintf [call site] 00017
4 open [call site] 00018
4 fcntl [call site] 00019
4 fcntl [call site] 00020
4 lseek64 [call site] 00021
4 lseek64 [call site] 00022
4 gz_reset [function] [call site] 00023
5 gz_error [function] [call site] 00024
6 strlen [call site] 00025
6 strlen [call site] 00026
6 snprintf [call site] 00027
2 fprintf [call site] 00028
2 gz_compress [function] [call site] 00029
3 fread [call site] 00030
3 ferror [call site] 00031
3 perror [call site] 00032
3 gzwrite [function] [call site] 00033
4 gz_error [function] [call site] 00034
4 gz_error [function] [call site] 00035
4 gz_write [function] [call site] 00036
5 gz_init [function] [call site] 00037
6 gz_error [function] [call site] 00038
6 gz_error [function] [call site] 00039
6 deflateInit2_ [function] [call site] 00040
7 deflateEnd [function] [call site] 00041
8 deflateStateCheck [function] [call site] 00042
7 deflateReset [function] [call site] 00043
8 deflateResetKeep [function] [call site] 00044
9 deflateStateCheck [function] [call site] 00045
9 crc32 [function] [call site] 00046
10 crc32_z [function] [call site] 00047
11 crc_word [function] [call site] 00048
11 crc_word [function] [call site] 00049
11 crc_word [function] [call site] 00050
11 crc_word [function] [call site] 00051
11 crc_word [function] [call site] 00052
11 byte_swap [function] [call site] 00053
11 crc_word_big [function] [call site] 00054
11 crc_word_big [function] [call site] 00055
11 crc_word_big [function] [call site] 00056
11 crc_word_big [function] [call site] 00057
11 crc_word_big [function] [call site] 00058
11 byte_swap [function] [call site] 00059
9 adler32 [function] [call site] 00060
10 adler32_z [function] [call site] 00061
9 _tr_init [function] [call site] 00062
10 tr_static_init [function] [call site] 00063
10 init_block [function] [call site] 00064
8 lm_init [function] [call site] 00065
6 gz_error [function] [call site] 00066
5 gz_zero [function] [call site] 00067
6 gz_comp [function] [call site] 00068
7 gz_init [function] [call site] 00069
7 __errno_location [call site] 00070
7 write [call site] 00071
7 __errno_location [call site] 00072
7 __errno_location [call site] 00073
7 strerror [call site] 00074
7 gz_error [function] [call site] 00075
7 deflateReset [function] [call site] 00076
7 __errno_location [call site] 00077
7 write [call site] 00078
7 __errno_location [call site] 00079
7 __errno_location [call site] 00080
7 strerror [call site] 00081
7 gz_error [function] [call site] 00082
7 deflate [function] [call site] 00083
8 deflateStateCheck [function] [call site] 00084
8 flush_pending [function] [call site] 00085
9 _tr_flush_bits [function] [call site] 00086
10 bi_flush [function] [call site] 00087
8 putShortMSB [function] [call site] 00088
8 putShortMSB [function] [call site] 00089
8 putShortMSB [function] [call site] 00090
8 adler32 [function] [call site] 00091
8 flush_pending [function] [call site] 00092
8 crc32 [function] [call site] 00093
8 flush_pending [function] [call site] 00094
8 crc32 [function] [call site] 00095
8 crc32 [function] [call site] 00096
8 flush_pending [function] [call site] 00097
8 crc32 [function] [call site] 00098
8 crc32 [function] [call site] 00099
8 flush_pending [function] [call site] 00100
8 crc32 [function] [call site] 00101
8 crc32 [function] [call site] 00102
8 flush_pending [function] [call site] 00103
8 crc32 [function] [call site] 00104
8 flush_pending [function] [call site] 00105
8 crc32 [function] [call site] 00106
8 flush_pending [function] [call site] 00107
8 deflate_stored [function] [call site] 00108
9 _tr_stored_block [function] [call site] 00109
10 bi_windup [function] [call site] 00110
9 flush_pending [function] [call site] 00111
9 read_buf [function] [call site] 00112
10 adler32 [function] [call site] 00113
10 crc32 [function] [call site] 00114
9 read_buf [function] [call site] 00115
9 _tr_stored_block [function] [call site] 00116
9 flush_pending [function] [call site] 00117
8 deflate_huff [function] [call site] 00118
9 fill_window [function] [call site] 00119
10 slide_hash [function] [call site] 00120
10 read_buf [function] [call site] 00121
9 _tr_flush_block [function] [call site] 00122
10 detect_data_type [function] [call site] 00123
10 build_tree [function] [call site] 00124
11 pqdownheap [function] [call site] 00125
11 pqdownheap [function] [call site] 00126
11 pqdownheap [function] [call site] 00127
11 gen_bitlen [function] [call site] 00128
11 gen_codes [function] [call site] 00129
12 bi_reverse [function] [call site] 00130
10 build_tree [function] [call site] 00131
10 build_bl_tree [function] [call site] 00132
11 scan_tree [function] [call site] 00133
11 scan_tree [function] [call site] 00134
11 build_tree [function] [call site] 00135
10 _tr_stored_block [function] [call site] 00136
10 compress_block [function] [call site] 00137
10 send_all_trees [function] [call site] 00138
11 send_tree [function] [call site] 00139
11 send_tree [function] [call site] 00140
10 compress_block [function] [call site] 00141
10 init_block [function] [call site] 00142
10 bi_windup [function] [call site] 00143
9 flush_pending [function] [call site] 00144
9 _tr_flush_block [function] [call site] 00145
9 flush_pending [function] [call site] 00146
9 _tr_flush_block [function] [call site] 00147
9 flush_pending [function] [call site] 00148
8 deflate_rle [function] [call site] 00149
9 fill_window [function] [call site] 00150
9 _tr_flush_block [function] [call site] 00151
9 flush_pending [function] [call site] 00152
9 _tr_flush_block [function] [call site] 00153
9 flush_pending [function] [call site] 00154
9 _tr_flush_block [function] [call site] 00155
9 flush_pending [function] [call site] 00156
8 _tr_align [function] [call site] 00157
9 bi_flush [function] [call site] 00158
8 _tr_stored_block [function] [call site] 00159
8 flush_pending [function] [call site] 00160
8 putShortMSB [function] [call site] 00161
8 putShortMSB [function] [call site] 00162
8 flush_pending [function] [call site] 00163
7 gz_error [function] [call site] 00164
6 gz_comp [function] [call site] 00165
5 gz_comp [function] [call site] 00166
5 gz_comp [function] [call site] 00167
5 gz_comp [function] [call site] 00168
3 gzerror [function] [call site] 00169
3 error [function] [call site] 00170
3 fclose [call site] 00171
3 gzclose [function] [call site] 00172
4 gzclose_r [function] [call site] 00173
5 inflateEnd [function] [call site] 00174
6 inflateStateCheck [function] [call site] 00175
5 gz_error [function] [call site] 00176
5 close [call site] 00177
4 gzclose_w [function] [call site] 00178
5 gz_zero [function] [call site] 00179
5 gz_comp [function] [call site] 00180
5 deflateEnd [function] [call site] 00181
5 gz_error [function] [call site] 00182
5 close [call site] 00183
3 error [function] [call site] 00184
2 unlink [call site] 00185
1 file_uncompress [function] [call site] 00186
2 strlen [call site] 00187
2 fprintf [call site] 00188
2 snprintf [call site] 00189
2 strcmp [call site] 00190
2 snprintf [call site] 00191
2 gzopen [function] [call site] 00192
2 fprintf [call site] 00193
2 fopen [call site] 00194
2 perror [call site] 00195
2 gz_uncompress [function] [call site] 00196
3 gzread [function] [call site] 00197
4 gz_error [function] [call site] 00198
4 gz_error [function] [call site] 00199
4 gz_read [function] [call site] 00200
5 gz_skip [function] [call site] 00201
6 gz_fetch [function] [call site] 00202
7 gz_look [function] [call site] 00203
8 gz_error [function] [call site] 00204
8 inflateInit2_ [function] [call site] 00205
9 inflateReset2 [function] [call site] 00206
10 inflateStateCheck [function] [call site] 00207
10 inflateReset [function] [call site] 00208
11 inflateStateCheck [function] [call site] 00209
11 inflateResetKeep [function] [call site] 00210
12 inflateStateCheck [function] [call site] 00211
8 inflateReset [function] [call site] 00212
8 gz_avail [function] [call site] 00213
9 gz_load [function] [call site] 00214
10 __errno_location [call site] 00215
10 read [call site] 00216
10 __errno_location [call site] 00217
10 __errno_location [call site] 00218
10 strerror [call site] 00219
8 inflateReset [function] [call site] 00220
7 gz_load [function] [call site] 00221
7 gz_decomp [function] [call site] 00222
8 gz_avail [function] [call site] 00223
8 gz_error [function] [call site] 00224
8 inflate [function] [call site] 00225
9 inflateStateCheck [function] [call site] 00226
9 crc32 [function] [call site] 00227
9 crc32 [function] [call site] 00228
9 adler32 [function] [call site] 00229
9 crc32 [function] [call site] 00230
9 crc32 [function] [call site] 00231
9 crc32 [function] [call site] 00232
9 crc32 [function] [call site] 00233
9 crc32 [function] [call site] 00234
9 crc32 [function] [call site] 00235
9 crc32 [function] [call site] 00236
9 crc32 [function] [call site] 00237
9 adler32 [function] [call site] 00238
9 fixedtables [function] [call site] 00239
9 inflate_table [function] [call site] 00240
9 inflate_table [function] [call site] 00241
9 inflate_table [function] [call site] 00242
9 inflate_fast [function] [call site] 00243
9 crc32 [function] [call site] 00244
9 adler32 [function] [call site] 00245
9 updatewindow [function] [call site] 00246
9 crc32 [function] [call site] 00247
9 adler32 [function] [call site] 00248
8 gz_error [function] [call site] 00249
8 gz_error [function] [call site] 00250
8 gz_error [function] [call site] 00251
5 gz_fetch [function] [call site] 00252
5 gz_load [function] [call site] 00253
5 gz_decomp [function] [call site] 00254
4 __errno_location [call site] 00255
4 strerror [call site] 00256
4 gz_error [function] [call site] 00257
3 gzerror [function] [call site] 00258
3 error [function] [call site] 00259
3 fwrite [call site] 00260
3 error [function] [call site] 00261
3 fclose [call site] 00262
3 error [function] [call site] 00263
3 gzclose [function] [call site] 00264
3 error [function] [call site] 00265
2 unlink [call site] 00266
1 fopen [call site] 00267
1 perror [call site] 00268
1 fread [call site] 00269
1 ferror [call site] 00270
1 perror [call site] 00271
1 memcmp [call site] 00272
1 __assert_fail [call site] 00273
1 fclose [call site] 00274
1 error [function] [call site] 00275