Fuzz introspector: mozjpeg_compression_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
31 156 optimize call site: 00156 copy_file
18 205 rename_file call site: 00205 delete_file
8 33 optimize call site: 00033 fprint_csv_field
6 46 file_size call site: 00046 fatal
6 90 optimize call site: 00090 fatal
6 147 optimize call site: 00147 fprintf
5 23 optimize call site: 00023 warn
5 140 optimize call site: 00140 fprintf
3 98 optimize call site: 00098 file_exists
3 195 create_temp_file call site: 00195 fatal
2 6 generate_temp_file_name call site: 00006 perror
2 73 parse_markers call site: 00073 fprintf

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 fuzz_manager_init [function] [call site] 00001
2 fuzz_set_target_size [function] [call site] 00002
2 fopen [call site] 00003
2 generate_temp_file_name [function] [call site] 00004
3 strncpy [call site] 00005
3 mkstemp [call site] 00006
3 perror [call site] 00007
3 exit [call site] 00008
3 close [call site] 00009
2 generate_temp_file_name [function] [call site] 00010
2 strncpy [call site] 00011
2 dirname [call site] 00012
2 strnlen [call site] 00013
1 lstat [call site] 00014
1 fopen [call site] 00015
1 fwrite [call site] 00016
1 fclose [call site] 00017
1 optimize [function] [call site] 00018
2 jpeg_std_error [call site] 00019
2 jpeg_CreateDecompress [call site] 00020
2 jpeg_std_error [call site] 00021
2 jpeg_CreateCompress [call site] 00022
2 fopen [call site] 00023
2 warn [function] [call site] 00024
3 fprintf [call site] 00025
3 vfprintf [call site] 00026
3 fprintf [call site] 00027
3 fflush [call site] 00028
2 _setjmp [call site] 00029
2 jpeg_abort_decompress [call site] 00030
2 fclose [call site] 00031
2 free_line_buf [function] [call site] 00032
2 fprintf [call site] 00033
2 fprint_csv_field [function] [call site] 00034
3 strpbrk [call site] 00035
3 fputs [call site] 00036
3 fputc [call site] 00037
3 fputc [call site] 00038
3 fputc [call site] 00039
3 fputc [call site] 00040
2 fputc [call site] 00041
2 fprintf [call site] 00042
2 fflush [call site] 00043
2 file_size [function] [call site] 00044
3 fileno [call site] 00045
3 fstat [call site] 00046
2 fatal [function] [call site] 00047
3 fprintf [call site] 00048
3 vfprintf [call site] 00049
3 fprintf [call site] 00050
3 fflush [call site] 00051
3 exit [call site] 00052
2 calloc [call site] 00053
2 fatal [function] [call site] 00054
2 jpeg_save_markers [call site] 00055
2 jpeg_save_markers [call site] 00056
2 jpeg_custom_src [function] [call site] 00057
2 jpeg_custom_mem_src [function] [call site] 00058
2 jpeg_custom_mem_src [function] [call site] 00059
2 jpeg_read_header [call site] 00060
2 parse_markers [function] [call site] 00061
3 jpeg_special_marker_types_count [function] [call site] 00062
3 calloc [call site] 00063
3 fatal [function] [call site] 00064
3 jpeg_special_marker [function] [call site] 00065
4 memcmp [call site] 00066
3 str_add_list [function] [call site] 00067
4 strnlen [call site] 00068
4 strncatenate [function] [call site] 00069
5 strnlen [call site] 00070
5 strncat [call site] 00071
4 strncatenate [function] [call site] 00072
3 str_add_list [function] [call site] 00073
2 fprintf [call site] 00074
2 fprintf [call site] 00075
2 fprintf [call site] 00076
2 fprintf [call site] 00077
2 fflush [call site] 00078
2 jpeg_start_decompress [call site] 00079
2 calloc [call site] 00080
2 fatal [function] [call site] 00081
2 calloc [call site] 00082
2 fatal [function] [call site] 00083
2 jpeg_read_scanlines [call site] 00084
2 jpeg_read_coefficients [call site] 00085
2 fprintf [call site] 00086
2 fprintf [call site] 00087
2 file_size [function] [call site] 00088
2 fatal [function] [call site] 00089
2 fprintf [call site] 00090
2 calloc [call site] 00091
2 fatal [function] [call site] 00092
2 fseek [call site] 00093
2 fatal [function] [call site] 00094
2 fread [call site] 00095
2 fatal [function] [call site] 00096
2 fprintf [call site] 00097
2 fflush [call site] 00098
2 file_exists [function] [call site] 00099
3 stat [call site] 00100
2 fprintf [call site] 00101
2 _setjmp [call site] 00102
2 fprintf [call site] 00103
2 jpeg_abort_compress [call site] 00104
2 jpeg_abort_decompress [call site] 00105
2 fclose [call site] 00106
2 free_line_buf [function] [call site] 00107
2 calloc [call site] 00108
2 fatal [function] [call site] 00109
2 jpeg_memory_dest [function] [call site] 00110
3 fatal [function] [call site] 00111
3 fatal [function] [call site] 00112
2 jpeg_set_defaults [call site] 00113
2 jpeg_set_quality [call site] 00114
2 jpeg_c_int_param_supported [call site] 00115
2 jpeg_c_set_int_param [call site] 00116
2 jpeg_simple_progression [call site] 00117
2 jpeg_start_compress [call site] 00118
2 write_markers [function] [call site] 00119
3 fatal [function] [call site] 00120
3 jpeg_special_marker_name [function] [call site] 00121
4 jpeg_special_marker [function] [call site] 00122
3 strncmp [call site] 00123
3 strncmp [call site] 00124
3 strncmp [call site] 00125
3 strncmp [call site] 00126
3 strncmp [call site] 00127
3 strncmp [call site] 00128
3 strncmp [call site] 00129
3 jpeg_marker_name [function] [call site] 00130
3 fprintf [call site] 00131
3 jpeg_write_marker [call site] 00132
2 jpeg_write_scanlines [call site] 00133
2 jpeg_copy_critical_parameters [call site] 00134
2 jpeg_c_int_param_supported [call site] 00135
2 jpeg_c_set_int_param [call site] 00136
2 jpeg_simple_progression [call site] 00137
2 jpeg_write_coefficients [call site] 00138
2 write_markers [function] [call site] 00139
2 jpeg_finish_compress [call site] 00140
2 fprintf [call site] 00141
2 fprintf [call site] 00142
2 fprintf [call site] 00143
2 fprintf [call site] 00144
2 fprintf [call site] 00145
2 jpeg_finish_decompress [call site] 00146
2 free_line_buf [function] [call site] 00147
2 fprintf [call site] 00148
2 fprintf [call site] 00149
2 fprintf [call site] 00150
2 fprintf [call site] 00151
2 fprintf [call site] 00152
2 fprintf [call site] 00153
2 fclose [call site] 00154
2 fprintf [call site] 00155
2 fprintf [call site] 00156
2 fwrite [call site] 00157
2 fatal [function] [call site] 00158
2 fwrite [call site] 00159
2 fatal [function] [call site] 00160
2 snprintf [call site] 00161
2 fatal [function] [call site] 00162
2 fprintf [call site] 00163
2 file_exists [function] [call site] 00164
2 fatal [function] [call site] 00165
2 copy_file [function] [call site] 00166
3 fopen [call site] 00167
3 warn [function] [call site] 00168
3 create_file [function] [call site] 00169
4 open [call site] 00170
4 fdopen [call site] 00171
4 close [call site] 00172
3 fclose [call site] 00173
3 warn [function] [call site] 00174
3 calloc [call site] 00175
3 fatal [function] [call site] 00176
3 fread [call site] 00177
3 fwrite [call site] 00178
3 warn [function] [call site] 00179
3 ferror [call site] 00180
3 warn [function] [call site] 00181
3 feof [call site] 00182
3 fclose [call site] 00183
3 fclose [call site] 00184
2 fatal [function] [call site] 00185
2 create_file [function] [call site] 00186
2 fatal [function] [call site] 00187
2 create_temp_file [function] [call site] 00188
3 getuid [call site] 00189
3 getpid [call site] 00190
3 snprintf [call site] 00191
3 warn [function] [call site] 00192
3 mkstemps [call site] 00193
3 warn [function] [call site] 00194
3 fdopen [call site] 00195
3 close [call site] 00196
2 fatal [function] [call site] 00197
2 fprintf [call site] 00198
2 fwrite [call site] 00199
2 fprintf [call site] 00200
2 fwrite [call site] 00201
2 fclose [call site] 00202
2 warn [function] [call site] 00203
2 rename_file [function] [call site] 00204
3 rename [call site] 00205
2 fatal [function] [call site] 00206
2 chmod [call site] 00207
2 warn [function] [call site] 00208
2 geteuid [call site] 00209
2 chown [call site] 00210
2 warn [function] [call site] 00211
2 fatal [function] [call site] 00212
2 delete_file [function] [call site] 00213
3 fprintf [call site] 00214
3 unlink [call site] 00215
3 warn [function] [call site] 00216
2 fatal [function] [call site] 00217
2 fprintf [call site] 00218
2 utimensat [call site] 00219
2 warn [function] [call site] 00220
2 fprintf [call site] 00221
2 delete_file [function] [call site] 00222
2 warn [function] [call site] 00223
2 chmod [call site] 00224
2 warn [function] [call site] 00225
2 geteuid [call site] 00226
2 chown [call site] 00227
2 warn [function] [call site] 00228
2 fprintf [call site] 00229
2 rename_file [function] [call site] 00230
2 fatal [function] [call site] 00231
2 fprintf [call site] 00232
2 fwrite [call site] 00233
2 fatal [function] [call site] 00234
2 jpeg_destroy_compress [call site] 00235
2 jpeg_destroy_decompress [call site] 00236