Fuzz introspector: fuzzer_minigzip
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 21 file_compress call site: 00021 PREFIX3
11 54 file_compress call site: 00054 gz_compress_mmap
7 46 insert_knuth call site: 00046 UNLIKELY
5 2 LLVMFuzzerTestOneInput call site: 00002
2 14 file_compress call site: 00014
2 18 file_compress call site: 00018
2 68 gz_compress call site: 00068
2 80 file_uncompress call site: 00080
2 86 file_uncompress call site: 00086
2 89 file_uncompress call site: 00089
2 103 LLVMFuzzerTestOneInput call site: 00103
2 108 LLVMFuzzerTestOneInput call site: 00108

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 fopen [function] [call site] 00001
1 fwrite [function] [call site] 00002
1 error [function] [call site] 00003
2 va_start [function] [call site] 00004
2 vfprintf [function] [call site] 00005
2 va_end [function] [call site] 00006
2 exit [function] [call site] 00007
1 fclose [function] [call site] 00008
1 error [function] [call site] 00009
1 memset [function] [call site] 00010
1 snprintf [function] [call site] 00011
1 file_compress [function] [call site] 00012
2 strlen [function] [call site] 00013
2 strlen [function] [call site] 00014
2 fprintf [function] [call site] 00015
2 exit [function] [call site] 00016
2 snprintf [function] [call site] 00017
2 fopen [function] [call site] 00018
2 perror [function] [call site] 00019
2 exit [function] [call site] 00020
2 PREFIX [function] [call site] 00021
3 PREFIX3 [function] [call site] 00022
3 Assert [function] [call site] 00023
3 MAX_DIST [function] [call site] 00024
3 W_MASK [function] [call site] 00025
3 memcpy [function] [call site] 00026
3 HASHLESS [function] [call site] 00027
3 FUNCTABLE_CALL [function] [call site] 00028
3 FUNCTABLE_CALL [function] [call site] 00029
3 Assert [function] [call site] 00030
3 read_buf [function] [call site] 00031
3 HASHLESS [function] [call site] 00032
3 UNLIKELY [function] [call site] 00033
3 update_hash_roll [function] [call site] 00034
4 UPDATE_HASH_ROLL [function] [call site] 00035
3 insert_knuth_head [function] [call site] 00036
4 Z_U32_FROM_LE [function] [call site] 00037
4 zng_memread_4 [function] [call site] 00038
5 memcpy [function] [call site] 00039
4 UPDATE_HASH_KNUTH [function] [call site] 00040
3 insert_knuth [function] [call site] 00041
4 Z_U32_FROM_LE [function] [call site] 00042
4 zng_memread_4 [function] [call site] 00043
4 UPDATE_HASH_KNUTH [function] [call site] 00044
4 LIKELY [function] [call site] 00045
4 W_MASK [function] [call site] 00046
3 UNLIKELY [function] [call site] 00047
3 insert_batch [function] [call site] 00048
3 memset [function] [call site] 00049
3 memset [function] [call site] 00050
3 Assert [function] [call site] 00051
2 fprintf [function] [call site] 00052
2 exit [function] [call site] 00053
2 gz_compress [function] [call site] 00054
3 gz_compress_mmap [function] [call site] 00055
4 fileno [function] [call site] 00056
4 fstat [function] [call site] 00057
4 mmap [function] [call site] 00058
4 PREFIX [function] [call site] 00059
4 error [function] [call site] 00060
4 PREFIX [function] [call site] 00061
4 munmap [function] [call site] 00062
4 fclose [function] [call site] 00063
4 PREFIX [function] [call site] 00064
4 error [function] [call site] 00065
3 memset [function] [call site] 00066
3 fread [function] [call site] 00067
3 ferror [function] [call site] 00068
3 perror [function] [call site] 00069
3 exit [function] [call site] 00070
3 PREFIX [function] [call site] 00071
3 error [function] [call site] 00072
3 PREFIX [function] [call site] 00073
3 fclose [function] [call site] 00074
3 PREFIX [function] [call site] 00075
3 error [function] [call site] 00076
2 unlink [function] [call site] 00077
1 file_uncompress [function] [call site] 00078
2 strlen [function] [call site] 00079
2 strlen [function] [call site] 00080
2 fprintf [function] [call site] 00081
2 exit [function] [call site] 00082
2 snprintf [function] [call site] 00083
2 strcmp [function] [call site] 00084
2 snprintf [function] [call site] 00085
2 PREFIX [function] [call site] 00086
2 fprintf [function] [call site] 00087
2 exit [function] [call site] 00088
2 fopen [function] [call site] 00089
2 perror [function] [call site] 00090
2 exit [function] [call site] 00091
2 gz_uncompress [function] [call site] 00092
3 PREFIX [function] [call site] 00093
3 error [function] [call site] 00094
3 PREFIX [function] [call site] 00095
3 fwrite [function] [call site] 00096
3 error [function] [call site] 00097
3 fclose [function] [call site] 00098
3 error [function] [call site] 00099
3 PREFIX [function] [call site] 00100
3 error [function] [call site] 00101
2 unlink [function] [call site] 00102
1 fopen [function] [call site] 00103
1 perror [function] [call site] 00104
1 exit [function] [call site] 00105
1 memset [function] [call site] 00106
1 fread [function] [call site] 00107
1 ferror [function] [call site] 00108
1 perror [function] [call site] 00109
1 exit [function] [call site] 00110
1 memcmp [function] [call site] 00111
1 assert [function] [call site] 00112
1 Z_UNUSED [function] [call site] 00113
1 fclose [function] [call site] 00114
1 error [function] [call site] 00115