High level conclusions

Fuzzers reach 34.79% of cyclomatic complexity.

Fuzzers reach 21.78% of all functions.

Reachability and coverage overview

Functions statically reachable by fuzzers

232 / 1065

Cyclomatic complexity statically reachable by fuzzers

1804 / 5184

Runtime code coverage of functions

212 / 1065

The following table shows data about each function in the project. The functions included in this table correspond to all functions that exist in the executables of the fuzzers. As such, there may be functions that are from third-party libraries.

For further technical details on the meaning of columns in the below table, please see the Glossary .

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Runtime reached by Fuzzers	Combined reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

Fuzzer: tests/fuzz/fuzz_compress_chunk.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	746	68.9%
gold	[1:9]	33	3.04%
yellow	[10:29]	1	0.09%
greenyellow	[30:49]	1	0.09%
lawngreen	50+	301	27.8%
All colors	1082	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
79	799	zstd_wrap_decompress	call site: 00799	zfp_getcell
46	880	blosc_compress_context	call site: 00880	blosc_compress_context_without_dict
42	61	my_free	call site: 00061	init_callback_threads
39	581	flags_to_filters	call site: 00581	sframe_open_chunk
38	122	free_thread_context	call site: 00122	check_nthreads
34	622	blosc2_stdio_open	call site: 00622	set_compressor_thread
32	1040	read_lazy_chunk_bytes	call site: 01040	set_compressor_thread
30	408	blosc2_bitshuffle	call site: 00408	fill_filter
30	749	chunk_memcpy_unaligned	call site: 00749	chunk_memcpy_unaligned
23	304	load_lib	call site: 00304	dlopen
18	930	blosc2_free_ctx	call site: 00930	fill_tuner
17	532	fill_codec	call site: 00532	blosc2_compcode_to_compname

Runtime coverage analysis

Covered functions

1039

Functions that are reachable but not covered

158

Reachable functions

287

Percentage of reachable functions covered

44.95%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
tests/fuzz/fuzz_compress_chunk.c	10
blosc/blosc2.c	190
plugins/codecs/codecs-registry.c	1
plugins/filters/filters-registry.c	1
plugins/tuners/tuners-registry.c	1
bench/b2bench.c	1
blosc/blosc-private.h	21
blosc/stune.c	5
blosc/timestamp.c	3
blosc/shuffle.c	3
blosc/delta.c	1
blosc/trunc-prec.c	4
blosc/blosclz.c	24
blosc/sframe.c	8
tests/test_udio.c	4
blosc/blosc2-stdio.c	6
tests/test_race.c	1
blosc/fastcopy.c	21
plugins/codecs/zfp/blosc2-zfp.c	25
include/blosc2.h	4

Fuzzer: tests/fuzz/fuzz_decompress_frame.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	944	66.0%
gold	[1:9]	63	4.40%
yellow	[10:29]	7	0.48%
greenyellow	[30:49]	2	0.13%
lawngreen	50+	413	28.9%
All colors	1429	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
79	928	zstd_wrap_decompress	call site: 00928	zfp_getcell
50	1236	blosc_compress_context	call site: 01236	blosc_compress_context_without_dict
42	61	my_free	call site: 00061	init_callback_threads
38	122	free_thread_context	call site: 00122	check_nthreads
36	749	blosc_d	call site: 00749	set_compressor_thread
32	540	read_lazy_chunk_bytes	call site: 00540	set_compressor_thread
30	603	blosc2_bitshuffle	call site: 00603	fill_filter
30	878	chunk_memcpy_unaligned	call site: 00878	chunk_memcpy_unaligned
26	1352	frame_get_vlmetalayers	call site: 01352	set_compressor_thread
23	379	load_lib	call site: 00379	dlopen
22	175	get_header_info	call site: 00175	sframe_open_index
21	1299	blosc2_schunk_free	call site: 01299	frame_get_chunk

Runtime coverage analysis

Covered functions

1039

Functions that are reachable but not covered

161

Reachable functions

312

Percentage of reachable functions covered

48.4%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
tests/fuzz/fuzz_decompress_frame.c	10
blosc/blosc2.c	183
plugins/codecs/codecs-registry.c	1
plugins/filters/filters-registry.c	1
plugins/tuners/tuners-registry.c	1
bench/b2bench.c	1
blosc/schunk.c	15
blosc/frame.c	46
blosc/sframe.c	13
tests/test_udio.c	4
blosc/blosc2-stdio.c	6
tests/test_race.c	1
blosc/blosc-private.h	21
blosc/timestamp.c	3
blosc/shuffle.c	3
blosc/delta.c	1
blosc/trunc-prec.c	4
blosc/blosclz.c	24
blosc/fastcopy.c	21
plugins/codecs/zfp/blosc2-zfp.c	25
include/blosc2.h	4
blosc/stune.c	5
tests/test_api.c	3
tests/test_shared_pool.c	4

Fuzzer: tests/fuzz/fuzz_decompress_chunk.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	598	68.3%
gold	[1:9]	33	3.77%
yellow	[10:29]	1	0.11%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	243	27.7%
All colors	875	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
79	787	zstd_wrap_decompress	call site: 00787	zfp_getcell
42	61	my_free	call site: 00061	init_callback_threads
38	122	free_thread_context	call site: 00122	check_nthreads
36	608	blosc_d	call site: 00608	set_compressor_thread
31	400	blosc1_set_compressor	call site: 00400	read_lazy_chunk_bytes
30	462	blosc2_bitshuffle	call site: 00462	fill_filter
30	737	chunk_memcpy_unaligned	call site: 00737	chunk_memcpy_unaligned
29	236	load_lib	call site: 00236	dlopen
17	586	fill_codec	call site: 00586	blosc2_compcode_to_compname
16	344	read_lazy_chunk_bytes	call site: 00344	sframe_open_chunk
11	168	read_chunk_header	call site: 00168	BLOSC_TRACE_ERROR
11	386	blosc2_compname_to_compcode	call site: 00386	BLOSC_ERROR

Runtime coverage analysis

Covered functions

1039

Functions that are reachable but not covered

140

Reachable functions

255

Percentage of reachable functions covered

45.1%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
tests/fuzz/fuzz_decompress_chunk.c	9
blosc/blosc2.c	164
plugins/codecs/codecs-registry.c	1
plugins/filters/filters-registry.c	1
plugins/tuners/tuners-registry.c	1
bench/b2bench.c	1
blosc/blosc-private.h	21
blosc/stune.c	1
blosc/sframe.c	8
tests/test_udio.c	4
blosc/blosc2-stdio.c	6
tests/test_race.c	1
blosc/timestamp.c	3
blosc/shuffle.c	3
blosc/delta.c	1
blosc/trunc-prec.c	4
blosc/blosclz.c	24
blosc/fastcopy.c	21
plugins/codecs/zfp/blosc2-zfp.c	25
include/blosc2.h	4

Fuzzer: tests/fuzz/fuzz_compress_frame.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	1266	74.5%
gold	[1:9]	60	3.53%
yellow	[10:29]	6	0.35%
greenyellow	[30:49]	2	0.11%
lawngreen	50+	365	21.4%
All colors	1699	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
116	945	blosc_compress_context	call site: 00945	blosc_compress_context_without_dict
112	1562	blosc2_schunk_free	call site: 01562	blosc2_schunk_append_chunk
85	1447	blosc_run_decompression_with_context	call site: 01447	make_lazy_dict_vl_schunk
79	864	zstd_wrap_decompress	call site: 00864	zfp_getcell
56	270	blosc2_create_dctx	call site: 00270	frame_from_schunk
45	1105	get_header_info	call site: 01105	frame_from_schunk
41	1309	schunk_get_chunk_nbytes	call site: 01309	frame_get_lazychunk
39	431	create_thread_context	call site: 00431	attach_shared_pool
37	648	blosc_d	call site: 00648	sframe_open_chunk
35	74	my_free	call site: 00074	destroy_shared_pool
34	687	blosc2_stdio_open	call site: 00687	set_compressor_thread
32	1413	read_lazy_chunk_bytes	call site: 01413	set_compressor_thread

Runtime coverage analysis

Covered functions

1039

Functions that are reachable but not covered

186

Reachable functions

337

Percentage of reachable functions covered

44.81%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
tests/fuzz/fuzz_compress_frame.c	12
blosc/blosc2.c	185
plugins/codecs/codecs-registry.c	1
plugins/filters/filters-registry.c	1
plugins/tuners/tuners-registry.c	1
bench/b2bench.c	1
blosc/stune.c	5
blosc/blosc-private.h	21
blosc/schunk.c	33
blosc/frame.c	50
blosc/timestamp.c	3
blosc/shuffle.c	3
blosc/delta.c	1
blosc/trunc-prec.c	4
blosc/blosclz.c	24
blosc/sframe.c	14
tests/test_udio.c	6
blosc/blosc2-stdio.c	14
tests/test_race.c	1
blosc/fastcopy.c	21
plugins/codecs/zfp/blosc2-zfp.c	25
include/blosc2.h	4
tests/test_api.c	3
tests/test_vlblocks.c	11
blosc/directories.c	13
tests/test_shared_pool.c	4

Optimal target analysis

Remaining optimal interesting functions

The following table shows a list of functions that are optimal targets. Optimal targets are identified by finding the functions that in combination, yield a high code coverage.

Func name	Functions filename	Arg count	Args	Function depth	hitcount	instr count	bb count	cyclomatic complexity	Reachable functions	Incoming references	total cyclomatic complexity	Unreached complexity
b2nd_concatenate	/src/c-blosc2/blosc/b2nd.c	6	['b2nd_context_t*', 'b2nd_array_t*', 'b2nd_array_t*', 'int8_t', 'bool', 'b2nd_array_t**']	19	0	88	13	27	384	0	2174	624
ndlz_compress	/src/c-blosc2/plugins/codecs/ndlz/ndlz.c	7	['uint8_t*', 'int32_t', 'uint8_t*', 'int32_t', 'uint8_t', 'blosc2_cparams*', 'void*']	4	0	14	4	1	20	0	195	181
run_lazy_vldecompress_block_ctx_dict_test	/src/c-blosc2/tests/test_vlblocks.c	2	['int', 'char*']	15	0	20	2	3	347	2	1660	133
decompress_frame	/src/c-blosc2/compat/filegen-vl.c	1	['char*']	13	0	90	13	24	317	0	1430	74
ndlz_decompress	/src/c-blosc2/plugins/codecs/ndlz/ndlz.c	7	['uint8_t*', 'int32_t', 'uint8_t*', 'int32_t', 'uint8_t', 'blosc2_dparams*', 'void*']	2	0	14	4	1	11	0	79	74
pipeline_backward	/src/c-blosc2/blosc/blosc2.c	9	['struct thread_context*', 'int32_t', 'uint8_t*', 'int32_t', 'uint8_t*', 'uint8_t*', 'uint8_t*', 'int', 'int32_t']	5	0	102	24	34	38	0	94	62
test_create_sframe_frame	/src/c-blosc2/bench/sframe_bench.c	1	['char*']	15	0	86	9	11	358	0	1792	53
XXH64_hash_t::XXH3_64bits_digest	/src/c-blosc2/plugins/codecs/ndlz/xxhash.h	1	['XXH_NOESCAPE']	8	0	9	3	2	40	0	52	52
iter_chunk	/src/c-blosc2/blosc/b2nd.c	10	['b2nd_array_t*', 'int8_t', 'int64_t*', 'b2nd_selection_t**', 'b2nd_selection_t**', 'b2nd_selection_t**', 'uint8_t*', 'int64_t*', 'int64_t*', 'bool']	15	0	64	8	15	322	4	1466	52
shared_pool_worker	/src/c-blosc2/blosc/blosc2.c	1	['void*']	10	0	37	5	10	194	0	583	47

Implementing fuzzers that target the above functions will improve reachability such that it becomes:

Functions statically reachable by fuzzers

366 / 1065

Cyclomatic complexity statically reachable by fuzzers

3141 / 5184

All functions overview

If you implement fuzzers for these functions, the status of all functions in the project will be:

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Runtime reached by Fuzzers	Combined reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

This sections provides heuristics that can be used as input to a fuzz engine when running a given fuzz target. The current focus is on providing input that is usable by libFuzzer.

tests/fuzz/fuzz_compress_chunk.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['zstd_wrap_decompress', 'blosc_compress_context', 'my_free', 'flags_to_filters', 'free_thread_context', 'blosc2_stdio_open', 'read_lazy_chunk_bytes', 'blosc2_bitshuffle', 'chunk_memcpy_unaligned', 'load_lib']

tests/fuzz/fuzz_decompress_frame.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['zstd_wrap_decompress', 'blosc_compress_context', 'my_free', 'free_thread_context', 'blosc_d', 'read_lazy_chunk_bytes', 'blosc2_bitshuffle', 'chunk_memcpy_unaligned', 'frame_get_vlmetalayers', 'load_lib']

tests/fuzz/fuzz_decompress_chunk.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['zstd_wrap_decompress', 'my_free', 'free_thread_context', 'blosc_d', 'blosc1_set_compressor', 'blosc2_bitshuffle', 'chunk_memcpy_unaligned', 'load_lib', 'fill_codec', 'read_lazy_chunk_bytes']

tests/fuzz/fuzz_compress_frame.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['blosc_compress_context', 'blosc2_schunk_free', 'blosc_run_decompression_with_context', 'zstd_wrap_decompress', 'blosc2_create_dctx', 'get_header_info', 'schunk_get_chunk_nbytes', 'create_thread_context', 'blosc_d', 'my_free']

This section shows analysis of runtime coverage data.

For futher technical details on how this section is generated, please see the Glossary .

Complex functions with low coverage

Func name	Function total lines	Lines covered at runtime	percentage covered	Reached by fuzzers
zng_inflate	621	315	50.72%
BIT_initDStream	37	13	35.13%
ZSTD_getFrameHeader_advanced	89	43	48.31%
ZSTD_decodeLiteralsBlock	183	90	49.18%
ZSTD_execSequenceSplitLitBuffer(op,oend,litPtr+sequences[(seqNb-ADVANCED_SEQS)&STORED_SEQS_MASK].litLength-WILDCOPY_OVERLENGTH,sequences[(seqNb-ADVANCED_SEQS)&STORED_SEQS_MASK],&litPtr,litBufferEnd,prefixStart,dictStart,dictEnd)	57	31	54.38%
ZSTD_findFrameSizeInfoLegacy	41	15	36.58%
HUFv05_decompress4X2_usingDTable	73	33	45.20%
HUFv05_readDTableX4	60	16	26.66%
HUFv06_readDTableX4	59	16	27.11%
ZSTDv06_findFrameSizeInfoLegacy	40	20	50.0%
ZSTDv06_decodeLiteralsBlock	113	52	46.01%
ZSTDv06_loadEntropy	37	4	10.81%
HUFv07_decompress4X2_usingDTable_internal	71	35	49.29%
ZSTDv07_decodeLiteralsBlock	114	58	50.87%
bshuf_trans_byte_bitrow_AVX	75	10	13.33%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
read_chunk_header	98	34	34.69%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
pipeline_backward	119	38	31.93%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
check_nthreads	37	11	29.72%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc2_decompress	40	17	42.5%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc2_free_ctx	74	22	29.72%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc2_error_string	78	6	7.692%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
initialize_context_decompression	194	46	23.71%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc_d	381	128	33.59%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
release_thread_backend	48	7	14.58%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
copy_match	88	36	40.90%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
chunk_memcpy	57	21	36.84%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
get_shuffle_implementation	45	17	37.77%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc2_meta_get	36	5	13.88%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
ndmean_backward	114	16	14.03%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
load_lib	31	14	45.16%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc2_create_cctx	187	57	30.48%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
initialize_context_compression	125	48	38.4%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
load_lazy_chunk_dict	46	10	21.73%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
read_lazy_chunk_bytes	63	29	46.03%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
get_coffsets	112	37	33.03%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
frame_get_metalayers	69	22	31.88%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
frame_get_vlmetalayers	96	28	29.16%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
frame_to_schunk	284	84	29.57%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
frame_get_chunk	113	55	48.67%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
get_coffsets_nbytes	72	26	36.11%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
get_meta_from_header	101	31	30.69%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc2_schunk_free	60	31	51.66%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
zfp_acc_decompress	82	5	6.097%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
zfp_prec_decompress	105	5	4.761%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
ndcell_backward	119	16	13.44%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
zng_deflate	238	82	34.45%
ZSTD_buildSeqStore	131	38	29.00%
ZSTD_compressBlock_fast	32	12	37.5%
ZSTD_opt_getNextMatchAndUpdateSeqStore	35	10	28.57%
ZSTD_rescaleFreqs	97	49	50.51%
bshuf_trans_byte_elem_SSE	47	7	14.89%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc2_compname_to_compcode	31	7	22.58%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
pipeline_forward	105	32	30.47%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc2_compress	160	49	30.62%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc_c	217	100	46.08%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc2_compress_ctx	133	17	12.78%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']
blosc2_schunk_new	64	13	20.31%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c']

New fuzzers

The below fuzzers are templates and suggestions for how to target the set of optimal functions above

b2nd.c

Target file: /src/c-blosc2/blosc/b2nd.c
Target functions: b2nd_concatenate, iter_chunk

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target b2nd_concatenate */
  UNKNOWN_TYPE unknown_0;
  UNKNOWN_TYPE unknown_1;
  UNKNOWN_TYPE unknown_2;
  UNKNOWN_TYPE unknown_3;
  UNKNOWN_TYPE unknown_4;
  UNKNOWN_TYPE unknown_5;
  b2nd_concatenate(unknown_0, unknown_1, unknown_2, unknown_3, unknown_4, unknown_5);

  /* target iter_chunk */
  UNKNOWN_TYPE unknown_34;
  UNKNOWN_TYPE unknown_35;
  UNKNOWN_TYPE unknown_36;
  UNKNOWN_TYPE unknown_37;
  UNKNOWN_TYPE unknown_38;
  UNKNOWN_TYPE unknown_39;
  UNKNOWN_TYPE unknown_40;
  UNKNOWN_TYPE unknown_41;
  UNKNOWN_TYPE unknown_42;
  UNKNOWN_TYPE unknown_43;
  iter_chunk(unknown_34, unknown_35, unknown_36, unknown_37, unknown_38, unknown_39, unknown_40, unknown_41, unknown_42, unknown_43);

  af_safe_gb_cleanup();
}

ndlz.c

Target file: /src/c-blosc2/plugins/codecs/ndlz/ndlz.c
Target functions: ndlz_compress, ndlz_decompress

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target ndlz_compress */
  UNKNOWN_TYPE unknown_6;
  UNKNOWN_TYPE unknown_7;
  UNKNOWN_TYPE unknown_8;
  UNKNOWN_TYPE unknown_9;
  UNKNOWN_TYPE unknown_10;
  UNKNOWN_TYPE unknown_11;
  UNKNOWN_TYPE unknown_12;
  ndlz_compress(unknown_6, unknown_7, unknown_8, unknown_9, unknown_10, unknown_11, unknown_12);

  /* target ndlz_decompress */
  UNKNOWN_TYPE unknown_16;
  UNKNOWN_TYPE unknown_17;
  UNKNOWN_TYPE unknown_18;
  UNKNOWN_TYPE unknown_19;
  UNKNOWN_TYPE unknown_20;
  UNKNOWN_TYPE unknown_21;
  UNKNOWN_TYPE unknown_22;
  ndlz_decompress(unknown_16, unknown_17, unknown_18, unknown_19, unknown_20, unknown_21, unknown_22);

  af_safe_gb_cleanup();
}

test_vlblocks.c

Target file: /src/c-blosc2/tests/test_vlblocks.c
Target functions: run_lazy_vldecompress_block_ctx_dict_test

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target run_lazy_vldecompress_block_ctx_dict_test */
  int new_var13 = ada_safe_get_int();
  char *new_var14 = ada_safe_get_char_p();
  run_lazy_vldecompress_block_ctx_dict_test(new_var13, new_var14);

  af_safe_gb_cleanup();
}

filegen-vl.c

Target file: /src/c-blosc2/compat/filegen-vl.c
Target functions: decompress_frame

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target decompress_frame */
  char *new_var15 = ada_safe_get_char_p();
  decompress_frame(new_var15);

  af_safe_gb_cleanup();
}

blosc2.c

Target file: /src/c-blosc2/blosc/blosc2.c
Target functions: pipeline_backward, shared_pool_worker

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target pipeline_backward */
  structthread_context* new_var23 = calloc(sizeof(structthread_context), 1);
  UNKNOWN_TYPE unknown_24;
  UNKNOWN_TYPE unknown_25;
  UNKNOWN_TYPE unknown_26;
  UNKNOWN_TYPE unknown_27;
  UNKNOWN_TYPE unknown_28;
  UNKNOWN_TYPE unknown_29;
  int new_var30 = ada_safe_get_int();
  UNKNOWN_TYPE unknown_31;
  pipeline_backward(new_var23, unknown_24, unknown_25, unknown_26, unknown_27, unknown_28, unknown_29, new_var30, unknown_31);

  /* target shared_pool_worker */
  UNKNOWN_TYPE unknown_44;
  shared_pool_worker(unknown_44);

  af_safe_gb_cleanup();
}

sframe_bench.c

Target file: /src/c-blosc2/bench/sframe_bench.c
Target functions: test_create_sframe_frame

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target test_create_sframe_frame */
  char *new_var32 = ada_safe_get_char_p();
  test_create_sframe_frame(new_var32);

  af_safe_gb_cleanup();
}

xxhash.h

Target file: /src/c-blosc2/plugins/codecs/ndlz/xxhash.h
Target functions: XXH64_hash_t::XXH3_64bits_digest

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target XXH64_hash_t::XXH3_64bits_digest */
  UNKNOWN_TYPE unknown_33;
  XXH64_hash_t::XXH3_64bits_digest(unknown_33);

  af_safe_gb_cleanup();
}

This section shows which files and directories are considered in this report. The main reason for showing this is fuzz introspector may include more code in the reasoning than is desired. This section helps identify if too many files/directories are included, e.g. third party code, which may be irrelevant for the threat model. In the event too much is included, fuzz introspector supports a configuration file that can exclude data from the report. See the following link for more information on how to create a config file: link

Files in report

Source file	Reached by	Covered by
/src/c-blosc2/blosc/schunk.c	['tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/tests/test_schunk.c	[]	[]
/src/c-blosc2/compat/filegen-vl.c	[]	[]
/src/c-blosc2/blosc/b2nd_utils.c	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_resize.c	[]	[]
/src/c-blosc2/tests/test_lazychunk.c	[]	[]
/src/c-blosc2/blosc/shuffle-sse2.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-altivec.c	[]	[]
/src/c-blosc2/tests/test_delete_chunk.c	[]	[]
/src/c-blosc2/tests/test_race.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	[]
/src/c-blosc2/tests/test_urfilter_delta.c	[]	[]
/src/c-blosc2/tests/test_prefilter.c	[]	[]
/src/c-blosc2/plugins/codecs/zfp/test_zfp_acc_float.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-sse2.c	[]	[]
/src/c-blosc2/blosc/blosclz.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/tests/test_bitshuffle_leftovers.c	[]	[]
/src/c-blosc2/tests/test_reorder_offsets.c	[]	[]
/src/c-blosc2/tests/test_nthreads.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-avx512.c	[]	[]
/src/c-blosc2/blosc/shuffle-generic.h	[]	[]
/src/c-blosc2/tests/test_getitem.c	[]	[]
/src/c-blosc2/tests/test_bitshuffle_roundtrip.c	[]	[]
/src/c-blosc2/tests/test_getitem_overflow.c	[]	[]
/src/c-blosc2/tests/test_update_chunk.c	[]	[]
/src/c-blosc2/blosc/blosc2.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/blosc/trunc-prec.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	[]
/src/c-blosc2/blosc/threading.h	[]	[]
/src/c-blosc2/blosc/shuffle-generic.c	[]	[]
/src/c-blosc2/plugins/filters/int_trunc/test_int_trunc.c	[]	[]
/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c	['tests/fuzz/fuzz_decompress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c']
/src/c-blosc2/tests/test_schunk_frame.c	[]	[]
/src/c-blosc2/tests/test_frame_metalayer_overflow.c	[]	[]
/src/c-blosc2/bench/zero_runlen.c	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/ndlz-private.h	[]	[]
/src/c-blosc2/tests/test_insert_chunk_reopen.c	[]	[]
/src/c-blosc2/tests/test_urfilters.c	[]	[]
/src/c-blosc2/tests/test_insert_chunk.c	[]	[]
/src/c-blosc2/blosc/shuffle-neon.c	[]	[]
/src/c-blosc2/blosc/directories.c	['tests/fuzz/fuzz_compress_frame.c']	[]
/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c	['tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/tests/test_dict_schunk.c	[]	[]
/src/c-blosc2/blosc/stune.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/tests/b2nd/test_common.h	[]	[]
/src/c-blosc2/examples/schunk_postfilter.c	[]	[]
/src/c-blosc2/plugins/filters/ndmean/test_ndmean_mean.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-generic.h	[]	[]
/src/c-blosc2/blosc/delta.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/plugins/codecs/codecs-registry.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/examples/urfilters.c	[]	[]
/src/c-blosc2/plugins/filters/ndcell/ndcell.c	[]	[]
/src/c-blosc2/tests/test_get_slice_buffer.c	[]	[]
/src/c-blosc2/tests/test_compress_roundtrip.c	[]	[]
/src/c-blosc2/examples/b2nd/example_print_meta.c	[]	[]
/src/c-blosc2/plugins/codecs/zfp/zfp-private.h	[]	[]
/src/c-blosc2/bench/trunc_prec_schunk.c	[]	[]
/src/c-blosc2/tests/test_udio.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	[]
/src/c-blosc2/tests/test_shuffle_roundtrip_sse2.c	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/ndlz4x4.c	[]	[]
/src/c-blosc2/blosc/fastcopy.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/tests/test_sframe.c	[]	[]
/src/c-blosc2/tests/test_shuffle_roundtrip_neon.c	[]	[]
/src/c-blosc2/plugins/filters/ndmean/ndmean.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-generic.c	[]	[]
/src/c-blosc2/tests/test_frame_malformed_offsets.c	[]	[]
/src/c-blosc2/tests/test_maskout.c	[]	[]
/src/c-blosc2/plugins/codecs/zfp/test_zfp_prec_float.c	[]	[]
/src/c-blosc2/tests/test_common.h	[]	[]
/src/c-blosc2/tests/test_shuffle_roundtrip_altivec.c	[]	[]
/src/c-blosc2/tests/b2nd/cutest.h	[]	[]
/src/c-blosc2/tests/test_schunk_negative_index.c	[]	[]
/src/c-blosc2/examples/urcodecs.c	[]	[]
/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c	['tests/fuzz/fuzz_decompress_frame.c']	['tests/fuzz/fuzz_decompress_frame.c']
/src/c-blosc2/plugins/codecs/zfp/test_zfp_rate_getitem.c	[]	[]
/src/c-blosc2/plugins/filters/int_trunc/int_trunc.c	[]	[]
/src/c-blosc2/tests/test_shuffle_roundtrip_avx2.c	[]	[]
/src/c-blosc2/bench/b2bench.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	[]
/src/c-blosc2/blosc/frame.c	['tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/blosc/context.h	[]	[]
/src/c-blosc2/tests/test_lazychunk_memcpyed.c	[]	[]
/src/c-blosc2/plugins/filters/filters-registry.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/blosc/bitshuffle-avx2.c	[]	[]
/src/c-blosc2/blosc/blosc2-stdio.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/tests/test_shared_pool.c	['tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c']	[]
/src/c-blosc2/examples/vlblocks.c	[]	[]
/src/c-blosc2/blosc/b2nd.c	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_save_append.c	[]	[]
/src/c-blosc2/blosc/shuffle.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/tests/test_shuffle_roundtrip.c	[]	[]
/src/c-blosc2/tests/test_maxout.c	[]	[]
/src/c-blosc2/tests/test_vl_block_overflow.c	[]	[]
/src/c-blosc2/compat/filegen.c	[]	[]
/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c	['tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/tests/test_empty_buffer.c	[]	[]
/src/c-blosc2/tests/test_get_slice_nchunks.c	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/xxhash.h	[]	[]
/src/c-blosc2/blosc/timestamp.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/plugins/tuners/tuners-registry.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/examples/find_roots.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-neon.c	[]	[]
/src/c-blosc2/blosc/transpose-altivec.h	[]	[]
/src/c-blosc2/tests/test_stdio_validation.c	[]	[]
/src/c-blosc2/blosc/blosc-private.h	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/tests/test_api.c	['tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c']	[]
/src/c-blosc2/tests/test_shuffle_roundtrip_generic.c	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/ndlz8x8.c	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/test_ndlz.c	[]	[]
/src/c-blosc2/tests/test_postfilter.c	[]	[]
/src/c-blosc2/tests/test_mmap.c	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_concatenate.c	[]	[]
/src/c-blosc2/plugins/filters/ndcell/test_ndcell.c	[]	[]
/src/c-blosc2/tests/test_shared_thread_pool.c	[]	[]
/src/c-blosc2/plugins/filters/bytedelta/test_bytedelta.c	[]	[]
/src/c-blosc2/include/blosc2.h	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/bench/sframe_bench.c	[]	[]
/src/c-blosc2/tests/test_special_chunk_copy.c	[]	[]
/src/c-blosc2/tests/test_compressor.c	[]	[]
/src/c-blosc2/tests/test_blosc1_compat.c	[]	[]
/src/c-blosc2/include/blosc2/blosc2-common.h	[]	[]
/src/c-blosc2/bench/create_frame.c	[]	[]
/src/c-blosc2/tests/test_nolock.c	[]	[]
/src/c-blosc2/blosc/win32/threading.c	[]	[]
/src/c-blosc2/blosc/sframe.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	[]
/src/c-blosc2/tests/b2nd/test_b2nd_serialize.c	[]	[]
/src/c-blosc2/examples/b2nd/example_frame_generator.c	[]	[]
/src/c-blosc2/plugins/filters/bytedelta/bytedelta.c	[]	[]
/src/c-blosc2/blosc/shuffle-avx2.c	[]	[]
/src/c-blosc2/tests/test_urcodecs.c	[]	[]
/src/c-blosc2/tests/test_variable_chunks.c	[]	[]
/src/c-blosc2/include/b2nd.h	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/ndlz.c	[]	[]
/src/c-blosc2/tests/test_frame.c	[]	[]
/src/c-blosc2/bench/b2nd/bench_zfp_getitem.c	[]	[]
/src/c-blosc2/tests/test_schunk_header.c	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_stringshuffle.c	[]	[]
/src/c-blosc2/plugins/codecs/zfp/blosc2-zfp.c	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']	['tests/fuzz/fuzz_compress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_compress_frame.c']
/src/c-blosc2/tests/test_frame_trailer_neg_nvlmeta.c	[]	[]
/src/c-blosc2/plugins/codecs/zfp/test_zfp_rate_float.c	[]	[]
/src/c-blosc2/blosc/shuffle-altivec.c	[]	[]
/src/c-blosc2/tests/test_set_slice_buffer.c	[]	[]
/src/c-blosc2/tests/test_frame_lazychunk_malformed_cbytes.c	[]	[]
/src/c-blosc2/tests/test_frame_malformed_trailer_len.c	[]	[]
/src/c-blosc2/tests/test_vlblocks.c	['tests/fuzz/fuzz_compress_frame.c']	[]

Directories in report

Directory
/src/c-blosc2/plugins/filters/ndcell/
/src/c-blosc2/bench/
/src/c-blosc2/include/blosc2/
/src/c-blosc2/tests/
/src/c-blosc2/blosc/
/src/c-blosc2/plugins/tuners/
/src/c-blosc2/include/
/src/c-blosc2/plugins/filters/
/src/c-blosc2/plugins/codecs/zfp/
/src/c-blosc2/tests/b2nd/
/src/c-blosc2/plugins/filters/bytedelta/
/src/c-blosc2/plugins/filters/ndmean/
/src/c-blosc2/plugins/codecs/
/src/c-blosc2/bench/b2nd/
/src/c-blosc2/tests/fuzz/
/src/c-blosc2/compat/
/src/c-blosc2/plugins/codecs/ndlz/
/src/c-blosc2/blosc/win32/
/src/c-blosc2/examples/
/src/c-blosc2/examples/b2nd/
/src/c-blosc2/plugins/filters/int_trunc/

This section shows a list of 3rd party function calls and their relative coverage information. By static analysis of the target project code, all of the 3rd party function call and their caller information, including the source file and line number that initiate the call are captured. The caller source code file and line number are shown in column 2 while column 1 is the function name of the 3rd party function call. Each occurrent of the 3rd party function call will occuply a separate row. Column 3 of each row indicate if the 3rd party call in the source file line is unreachable. Column 4 lists all fuzzers that have covered that particular system call in that specific location (source file and line)during their dynamic fuzzing.

Function in each files in report

Target sink	Callsite location	Reached by fuzzer	Covered by Fuzzers