Fuzz introspector: round_trip_hc_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
1406 1406 1 :

['LZ4HC_compress_generic_dictCtx']

1406 1406 LZ4HC_compress_generic call site: 00027 /src/lz4/lib/lz4hc.c:930
0 12 1 :

['LZ4_initStreamHC']

0 15 LZ4_resetStreamHC_fast call site: 00019 /src/lz4/lib/lz4hc.c:1051
0 0 None 12 276 LZ4HC_compress_optimal call site: 00075 /src/lz4/lib/lz4hc.c:1476
0 0 None 0 1409 LZ4_compress_HC_extStateHC_fastReset call site: 00026 /src/lz4/lib/lz4hc.c:958
0 0 None 0 0 LZ4_readLE16 call site: 00109 /src/lz4/lib/lz4.c:426
0 0 None 0 0 LZ4_NbCommonBytes call site: 00000 /src/lz4/lib/./lz4.c:564
0 0 None 0 0 LZ4_writeLE16 call site: 00048 /src/lz4/lib/./lz4.c:436
0 0 None 0 0 LZ4HC_countPattern call site: 00000 /src/lz4/lib/lz4hc.c:193
0 0 None 0 0 LZ4HC_compress_optimal call site: 00073 /src/lz4/lib/lz4hc.c:1390
0 0 None 0 0 LZ4HC_compress_optimal call site: 00089 /src/lz4/lib/lz4hc.c:1579
0 0 None 0 0 FUZZ_dataProducer_retrieve32 call site: 00004 /src/lz4/ossfuzz/fuzz_data_producer.c:23
0 0 None 0 0 FUZZ_getRange_from_uint32 call site: 00005 /src/lz4/ossfuzz/fuzz_data_producer.c:37

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 FUZZ_dataProducer_create [function] [call site] 00001
2 fprintf [call site] 00002
1 FUZZ_dataProducer_range32 [function] [call site] 00003
2 FUZZ_dataProducer_retrieve32 [function] [call site] 00004
2 FUZZ_getRange_from_uint32 [function] [call site] 00005
1 FUZZ_dataProducer_remainingBytes [function] [call site] 00006
1 LZ4_compressBound [function] [call site] 00007
1 fprintf [call site] 00008
1 fprintf [call site] 00009
1 LZ4_compress_HC [function] [call site] 00010
2 LZ4_compress_HC_extStateHC [function] [call site] 00011
3 LZ4_initStreamHC [function] [call site] 00012
4 LZ4_streamHC_t_alignment [function] [call site] 00013
4 LZ4_isAligned [function] [call site] 00014
4 LZ4_setCompressionLevel [function] [call site] 00015
3 LZ4_compress_HC_extStateHC_fastReset [function] [call site] 00016
4 LZ4_streamHC_t_alignment [function] [call site] 00017
4 LZ4_isAligned [function] [call site] 00018
4 LZ4_resetStreamHC_fast [function] [call site] 00019
5 LZ4_initStreamHC [function] [call site] 00020
5 __assert_fail [call site] 00021
5 LZ4_setCompressionLevel [function] [call site] 00022
4 LZ4HC_init_internal [function] [call site] 00023
5 __assert_fail [call site] 00024
5 LZ4HC_clearTables [function] [call site] 00025
4 LZ4_compressBound [function] [call site] 00026
4 LZ4HC_compress_generic [function] [call site] 00027
5 LZ4HC_compress_generic_noDictCtx [function] [call site] 00028
6 __assert_fail [call site] 00029
6 LZ4_read32 [function] [call site] 00030
6 __assert_fail [call site] 00031
6 __assert_fail [call site] 00032
6 LZ4HC_hashPtr [function] [call site] 00033
7 LZ4_read32 [function] [call site] 00034
6 LZ4HC_hashPtr [function] [call site] 00035
6 __assert_fail [call site] 00036
6 LZ4_read_ARCH [function] [call site] 00037
6 LZ4_read_ARCH [function] [call site] 00038
6 LZ4_read_ARCH [function] [call site] 00039
6 __assert_fail [call site] 00040
6 LZ4_read_ARCH [function] [call site] 00041
6 __assert_fail [call site] 00042
6 LZ4_read32 [function] [call site] 00043
6 __assert_fail [call site] 00044
6 LZ4HC_hashPtr [function] [call site] 00045
6 __assert_fail [call site] 00046
6 LZ4_writeLE16 [function] [call site] 00047
7 LZ4_isLittleEndian [function] [call site] 00048
7 LZ4_write16 [function] [call site] 00049
6 LZ4_read32 [function] [call site] 00050
6 __assert_fail [call site] 00051
6 LZ4HC_hashPtr [function] [call site] 00052
6 __assert_fail [call site] 00053
6 LZ4_writeLE16 [function] [call site] 00054
6 __assert_fail [call site] 00055
6 LZ4_writeLE16 [function] [call site] 00056
6 __assert_fail [call site] 00057
6 LZ4_writeLE16 [function] [call site] 00058
6 __assert_fail [call site] 00059
6 LZ4_writeLE16 [function] [call site] 00060
6 __assert_fail [call site] 00061
6 __assert_fail [call site] 00062
6 LZ4_writeLE16 [function] [call site] 00063
6 LZ4HC_compress_optimal [function] [call site] 00064
7 LZ4_read32 [function] [call site] 00065
7 __assert_fail [call site] 00066
7 LZ4HC_hashPtr [function] [call site] 00067
7 __assert_fail [call site] 00068
7 LZ4_writeLE16 [function] [call site] 00069
7 __assert_fail [call site] 00070
7 __assert_fail [call site] 00071
7 __assert_fail [call site] 00072
7 __assert_fail [call site] 00073
7 __assert_fail [call site] 00074
7 __assert_fail [call site] 00075
7 __assert_fail [call site] 00076
7 __assert_fail [call site] 00077
7 __assert_fail [call site] 00078
7 __assert_fail [call site] 00079
7 __assert_fail [call site] 00080
7 __assert_fail [call site] 00081
7 __assert_fail [call site] 00082
7 __assert_fail [call site] 00083
7 __assert_fail [call site] 00084
7 __assert_fail [call site] 00085
7 __assert_fail [call site] 00086
7 __assert_fail [call site] 00087
7 __assert_fail [call site] 00088
7 LZ4_writeLE16 [function] [call site] 00089
7 __assert_fail [call site] 00090
7 __assert_fail [call site] 00091
7 LZ4_writeLE16 [function] [call site] 00092
6 __assert_fail [call site] 00093
5 LZ4HC_compress_generic_dictCtx [function] [call site] 00094
6 __assert_fail [call site] 00095
6 LZ4HC_compress_generic_noDictCtx [function] [call site] 00096
6 LZ4HC_setExternalDict [function] [call site] 00097
7 __assert_fail [call site] 00098
7 LZ4HC_hashPtr [function] [call site] 00099
6 LZ4HC_compress_generic_noDictCtx [function] [call site] 00100
6 LZ4HC_compress_optimal [function] [call site] 00101
6 __assert_fail [call site] 00102
4 LZ4HC_compress_generic [function] [call site] 00103
1 fprintf [call site] 00104
1 LZ4_decompress_safe [function] [call site] 00105
2 __assert_fail [call site] 00106
2 __assert_fail [call site] 00107
2 LZ4_readLE16 [function] [call site] 00108
3 LZ4_isLittleEndian [function] [call site] 00109
3 LZ4_read16 [function] [call site] 00110
2 __assert_fail [call site] 00111
2 __assert_fail [call site] 00112
2 __assert_fail [call site] 00113
2 LZ4_write32 [function] [call site] 00114
2 __assert_fail [call site] 00115
2 __assert_fail [call site] 00116
1 fprintf [call site] 00117
1 memcmp [call site] 00118
1 FUZZ_dataProducer_free [function] [call site] 00119