High level conclusions

Fuzzers reach 32.06% of cyclomatic complexity.

Fuzzers reach 21.23% of all functions.

Reachability and coverage overview

Functions statically reachable by fuzzers

264 / 1243

Cyclomatic complexity statically reachable by fuzzers

1996 / 6224

Runtime code coverage of functions

232 / 1243

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_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	684	70.0%
gold	[1:9]	41	4.20%
yellow	[10:29]	2	0.20%
greenyellow	[30:49]	1	0.10%
lawngreen	50+	248	25.4%
All colors	976	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
134	833	zstd_wrap_decompress	call site: 00833	serial_blosc
52	423	read_lazy_chunk_bytes	call site: 00423	read_lazy_chunk_bytes
48	124	free_thread_context	call site: 00124	check_nthreads
42	63	my_free	call site: 00063	init_callback_threads
36	653	blosc_d	call site: 00653	mapped_io_read
30	507	blosc2_bitshuffle	call site: 00507	fill_filter
30	783	chunk_memcpy_unaligned	call site: 00783	chunk_memcpy_unaligned
29	248	load_lib	call site: 00248	dlopen
23	357	read_lazy_chunk_bytes	call site: 00357	sframe_open_chunk
17	631	fill_codec	call site: 00631	blosc2_compcode_to_compname
12	410	frame_reader_acquire	call site: 00410	frame_reader_release
11	180	read_chunk_header	call site: 00180	BLOSC_TRACE_ERROR

Runtime coverage analysis

Covered functions

1098

Functions that are reachable but not covered

147

Reachable functions

267

Percentage of reachable functions covered

44.94%

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	162
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_sframe_special_eviction.c	10
blosc/blosc2-stdio.c	17
blosc/frame.c	12
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	27
include/b2nd.h	6
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	1094	68.0%
gold	[1:9]	65	4.04%
yellow	[10:29]	18	1.12%
greenyellow	[30:49]	8	0.49%
lawngreen	50+	422	26.2%
All colors	1607	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
134	999	zstd_wrap_decompress	call site: 00999	serial_blosc
48	124	free_thread_context	call site: 00124	check_nthreads
42	63	my_free	call site: 00063	init_callback_threads
36	819	blosc_d	call site: 00819	mapped_io_read
35	1557	blosc2_schunk_decompress_chunk	call site: 01557	frame_decompress_chunk
33	608	read_lazy_chunk_bytes	call site: 00608	read_lazy_chunk_bytes
30	673	blosc2_bitshuffle	call site: 00673	fill_filter
30	949	chunk_memcpy_unaligned	call site: 00949	chunk_memcpy_unaligned
29	191	get_header_info	call site: 00191	sframe_open_index
29	1468	frame_get_chunk	call site: 01468	mapped_io_read
27	265	frame_reader_acquire	call site: 00265	mapped_io_read
26	1219	frame_get_vlmetalayers	call site: 01219	mapped_io_read

Runtime coverage analysis

Covered functions

1098

Functions that are reachable but not covered

194

Reachable functions

361

Percentage of reachable functions covered

46.26%

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	176
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	19
blosc/frame.c	93
blosc/sframe.c	13
tests/test_sframe_special_eviction.c	12
blosc/blosc2-stdio.c	19
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	27
include/b2nd.h	6
include/blosc2.h	4
blosc/stune.c	5

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	1565	74.1%
gold	[1:9]	63	2.98%
yellow	[10:29]	18	0.85%
greenyellow	[30:49]	8	0.37%
lawngreen	50+	458	21.6%
All colors	2112	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
134	931	zstd_wrap_decompress	call site: 00931	serial_blosc
103	1749	blosc_run_decompression_with_context	call site: 01749	create_regular_schunk
85	1878	blosc2_schunk_free	call site: 01878	blosc2_schunk_open
71	1067	blosc_compress_context	call site: 01067	blosc_compress_context_without_dict
52	1238	get_header_info	call site: 01238	frame_from_schunk
49	440	create_thread_context	call site: 00440	attach_shared_pool
47	288	frame_alloc	call site: 00288	frame_from_schunk
44	668	blosc_d	call site: 00668	sframe_open_chunk
42	1143	frame_reader_invalidate	call site: 01143	frame_update_trailer
36	2003	frame_to_schunk	call site: 02003	frame_get_chunk
35	76	my_free	call site: 00076	destroy_shared_pool
35	752	frame_reader_acquire	call site: 00752	mapped_io_read

Runtime coverage analysis

Covered functions

1098

Functions that are reachable but not covered

218

Reachable functions

392

Percentage of reachable functions covered

44.39%

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	187
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	50
blosc/frame.c	116
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_sframe_special_eviction.c	14
blosc/blosc2-stdio.c	21
blosc/fastcopy.c	21
plugins/codecs/zfp/blosc2-zfp.c	27
include/b2nd.h	6
include/blosc2.h	4
tests/test_schunk_get_sparse.c	13
blosc/directories.c	15

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	843	70.3%
gold	[1:9]	41	3.41%
yellow	[10:29]	2	0.16%
greenyellow	[30:49]	2	0.16%
lawngreen	50+	311	25.9%
All colors	1199	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
134	859	zstd_wrap_decompress	call site: 00859	serial_blosc
48	124	free_thread_context	call site: 00124	check_nthreads
46	594	flags_to_filters	call site: 00594	sframe_open_chunk
46	995	blosc_compress_context	call site: 00995	blosc_compress_context_without_dict
42	63	my_free	call site: 00063	init_callback_threads
35	680	frame_reader_acquire	call site: 00680	mapped_io_read
33	1156	read_lazy_chunk_bytes	call site: 01156	read_lazy_chunk_bytes
30	421	blosc2_bitshuffle	call site: 00421	fill_filter
30	809	chunk_memcpy_unaligned	call site: 00809	chunk_memcpy_unaligned
23	316	load_lib	call site: 00316	dlopen
20	642	blosc2_stdio_open	call site: 00642	frame_reader_acquire
18	1045	blosc2_free_ctx	call site: 01045	fill_tuner

Runtime coverage analysis

Covered functions

1098

Functions that are reachable but not covered

165

Reachable functions

299

Percentage of reachable functions covered

44.82%

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	192
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_sframe_special_eviction.c	10
blosc/blosc2-stdio.c	17
blosc/frame.c	12
blosc/fastcopy.c	21
plugins/codecs/zfp/blosc2-zfp.c	27
include/b2nd.h	6
include/blosc2.h	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**']	22	0	90	13	27	453	0	2575	755
check_sparse_regular	/src/c-blosc2/tests/test_schunk_get_sparse.c	7	['bool', 'int32_t', 'int', 'int16_t', 'int64_t', 'int64_t*', 'int64_t']	19	0	18	3	3	423	7	2107	192
ndlz_compress	/src/c-blosc2/plugins/codecs/ndlz/ndlz.c	7	['uint8_t*', 'int32_t', 'uint8_t*', 'int32_t', 'uint8_t', 'blosc2_cparams*', 'void*']	5	0	14	4	1	21	0	197	156
run_lazy_vldecompress_block_ctx_dict_test	/src/c-blosc2/tests/test_vlblocks.c	2	['int', 'char*']	18	0	21	2	4	405	2	1980	151
check_mmap_destroy_external_growth	/src/c-blosc2/tests/test_compact_tail_update.c	3	['size_t', 'int', 'bool']	4	0	31	4	3	59	1	125	94
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	13	0	81	76
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
iter_chunk	/src/c-blosc2/blosc/b2nd.c	12	['b2nd_array_t*', 'int8_t', 'int64_t*', 'b2nd_selection_t**', 'b2nd_selection_t**', 'b2nd_selection_t**', 'uint8_t*', 'int64_t*', 'int64_t*', 'bool', 'uint8_t*', 'int32_t']	18	0	62	8	15	374	5	1776	60
test_create_sframe_frame	/src/c-blosc2/bench/sframe_bench.c	1	['char*']	16	0	86	9	11	417	0	2113	55
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

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

Functions statically reachable by fuzzers

421 / 1243

Cyclomatic complexity statically reachable by fuzzers

3634 / 6224

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_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', 'read_lazy_chunk_bytes', 'free_thread_context', 'my_free', 'blosc_d', 'blosc2_bitshuffle', 'chunk_memcpy_unaligned', 'load_lib', 'fill_codec']

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', 'free_thread_context', 'my_free', 'blosc_d', 'blosc2_schunk_decompress_chunk', 'read_lazy_chunk_bytes', 'blosc2_bitshuffle', 'chunk_memcpy_unaligned', 'get_header_info', 'frame_get_chunk']

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=['zstd_wrap_decompress', 'blosc_run_decompression_with_context', 'blosc2_schunk_free', 'blosc_compress_context', 'get_header_info', 'create_thread_context', 'frame_alloc', 'blosc_d', 'frame_reader_invalidate', 'frame_to_schunk']

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', 'free_thread_context', 'flags_to_filters', 'blosc_compress_context', 'my_free', 'frame_reader_acquire', 'read_lazy_chunk_bytes', 'blosc2_bitshuffle', 'chunk_memcpy_unaligned', 'load_lib']

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%
bshuf_trans_byte_bitrow_AVX	75	10	13.33%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
load_lib	31	14	45.16%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
read_chunk_header	99	34	34.34%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
pipeline_backward	119	38	31.93%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc2_decompress	40	17	42.5%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc2_free_ctx	74	22	29.72%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc2_error_string	80	6	7.5%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
initialize_context_decompression	194	46	23.71%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
load_lazy_chunk_dict	46	10	21.73%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
read_lazy_chunk_bytes	82	44	53.65%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc_d	380	128	33.68%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
set_values	49	20	40.81%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
check_nthreads	37	11	29.72%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
release_thread_backend	48	7	14.58%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
copy_match	88	36	40.90%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
chunk_memcpy	57	21	36.84%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
get_shuffle_implementation	45	17	37.77%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc2_meta_get	36	7	19.44%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
zfp_acc_decompress	109	5	4.587%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
zfp_prec_decompress	132	5	3.787%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
zfp_rate_decompress	136	5	3.676%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
ndcell_backward	157	16	10.19%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
ndmean_backward	156	16	10.25%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc2_create_cctx	187	57	30.48%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
initialize_context_compression	125	48	38.4%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
frame_lock	44	4	9.090%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
get_coffsets	112	37	33.03%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
frame_get_metalayers	69	22	31.88%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
frame_get_vlmetalayers	96	28	29.16%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
frame_to_schunk	284	84	29.57%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
frame_get_chunk	127	59	46.45%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
frame_get_lazychunk	313	75	23.96%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
frame_refresh_if_stale	92	5	5.434%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
get_coffsets_nbytes	72	24	33.33%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc2_schunk_decompress_chunk	44	23	52.27%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.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_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc2_compname_to_compcode	31	7	22.58%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
pipeline_forward	105	32	30.47%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc2_compress	160	49	30.62%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc_c	217	100	46.08%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc2_compress_ctx	133	17	12.78%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
frame_check_stale	31	4	12.90%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.c']
blosc2_schunk_new	66	13	19.69%	['/src/c-blosc2/tests/fuzz/fuzz_decompress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_decompress_chunk.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_frame.c', '/src/c-blosc2/tests/fuzz/fuzz_compress_chunk.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_41;
  UNKNOWN_TYPE unknown_42;
  UNKNOWN_TYPE unknown_43;
  UNKNOWN_TYPE unknown_44;
  UNKNOWN_TYPE unknown_45;
  UNKNOWN_TYPE unknown_46;
  UNKNOWN_TYPE unknown_47;
  UNKNOWN_TYPE unknown_48;
  UNKNOWN_TYPE unknown_49;
  UNKNOWN_TYPE unknown_50;
  UNKNOWN_TYPE unknown_51;
  UNKNOWN_TYPE unknown_52;
  iter_chunk(unknown_41, unknown_42, unknown_43, unknown_44, unknown_45, unknown_46, unknown_47, unknown_48, unknown_49, unknown_50, unknown_51, unknown_52);

  af_safe_gb_cleanup();
}

test_schunk_get_sparse.c

Target file: /src/c-blosc2/tests/test_schunk_get_sparse.c
Target functions: check_sparse_regular

#include "ada_fuzz_header.h"

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

  /* target check_sparse_regular */
  UNKNOWN_TYPE unknown_6;
  UNKNOWN_TYPE unknown_7;
  int new_var8 = ada_safe_get_int();
  UNKNOWN_TYPE unknown_9;
  UNKNOWN_TYPE unknown_10;
  UNKNOWN_TYPE unknown_11;
  UNKNOWN_TYPE unknown_12;
  check_sparse_regular(unknown_6, unknown_7, new_var8, unknown_9, unknown_10, unknown_11, unknown_12);

  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_13;
  UNKNOWN_TYPE unknown_14;
  UNKNOWN_TYPE unknown_15;
  UNKNOWN_TYPE unknown_16;
  UNKNOWN_TYPE unknown_17;
  UNKNOWN_TYPE unknown_18;
  UNKNOWN_TYPE unknown_19;
  ndlz_compress(unknown_13, unknown_14, unknown_15, unknown_16, unknown_17, unknown_18, unknown_19);

  /* target ndlz_decompress */
  UNKNOWN_TYPE unknown_25;
  UNKNOWN_TYPE unknown_26;
  UNKNOWN_TYPE unknown_27;
  UNKNOWN_TYPE unknown_28;
  UNKNOWN_TYPE unknown_29;
  UNKNOWN_TYPE unknown_30;
  UNKNOWN_TYPE unknown_31;
  ndlz_decompress(unknown_25, unknown_26, unknown_27, unknown_28, unknown_29, unknown_30, unknown_31);

  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_var20 = ada_safe_get_int();
  char *new_var21 = ada_safe_get_char_p();
  run_lazy_vldecompress_block_ctx_dict_test(new_var20, new_var21);

  af_safe_gb_cleanup();
}

test_compact_tail_update.c

Target file: /src/c-blosc2/tests/test_compact_tail_update.c
Target functions: check_mmap_destroy_external_growth

#include "ada_fuzz_header.h"

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

  /* target check_mmap_destroy_external_growth */
  UNKNOWN_TYPE unknown_22;
  int new_var23 = ada_safe_get_int();
  UNKNOWN_TYPE unknown_24;
  check_mmap_destroy_external_growth(unknown_22, new_var23, unknown_24);

  af_safe_gb_cleanup();
}

blosc2.c

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

#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_var32 = calloc(sizeof(structthread_context), 1);
  UNKNOWN_TYPE unknown_33;
  UNKNOWN_TYPE unknown_34;
  UNKNOWN_TYPE unknown_35;
  UNKNOWN_TYPE unknown_36;
  UNKNOWN_TYPE unknown_37;
  UNKNOWN_TYPE unknown_38;
  int new_var39 = ada_safe_get_int();
  UNKNOWN_TYPE unknown_40;
  pipeline_backward(new_var32, unknown_33, unknown_34, unknown_35, unknown_36, unknown_37, unknown_38, new_var39, unknown_40);

  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_var53 = ada_safe_get_char_p();
  test_create_sframe_frame(new_var53);

  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_54;
  XXH64_hash_t::XXH3_64bits_digest(unknown_54);

  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/tests/test_compressor.c	[]	[]
/src/c-blosc2/blosc/shuffle-neon.c	[]	[]
/src/c-blosc2/tests/test_shuffle_roundtrip_sse2.c	[]	[]
/src/c-blosc2/plugins/codecs/zfp/test_zfp_rate_getitem.c	[]	[]
/src/c-blosc2/tests/test_dict_schunk.c	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_stringshuffle.c	[]	[]
/src/c-blosc2/plugins/filters/filters-registry.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/examples/find_roots.c	[]	[]
/src/c-blosc2/blosc/b2nd_utils.c	[]	[]
/src/c-blosc2/blosc/timestamp.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/tests/test_vlblocks.c	[]	[]
/src/c-blosc2/plugins/codecs/zfp/zfp-private.h	[]	[]
/src/c-blosc2/examples/urcodecs.c	[]	[]
/src/c-blosc2/plugins/filters/ndcell/ndcell.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_special_chunk_copy.c	[]	[]
/src/c-blosc2/tests/test_schunk_negative_index.c	[]	[]
/src/c-blosc2/tests/test_prefilter.c	[]	[]
/src/c-blosc2/plugins/filters/ndcell/test_ndcell.c	[]	[]
/src/c-blosc2/compat/filegen.c	[]	[]
/src/c-blosc2/blosc/blosc-private.h	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/tests/test_maxout.c	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_orthogonal_selection.c	[]	[]
/src/c-blosc2/plugins/tuners/tuners-registry.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/blosc/stune.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.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/plugins/filters/bytedelta/bytedelta.c	[]	[]
/src/c-blosc2/blosc/shuffle.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/bench/trunc_prec_schunk.c	[]	[]
/src/c-blosc2/examples/b2nd/example_print_meta.c	[]	[]
/src/c-blosc2/tests/test_compress_roundtrip.c	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_save_append.c	[]	[]
/src/c-blosc2/plugins/codecs/zfp/test_zfp_word_alignment.c	[]	[]
/src/c-blosc2/tests/test_shuffle_roundtrip_avx2.c	[]	[]
/src/c-blosc2/blosc/frame.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/tests/test_delete_chunk.c	[]	[]
/src/c-blosc2/blosc/shuffle-altivec.c	[]	[]
/src/c-blosc2/examples/urfilters.c	[]	[]
/src/c-blosc2/tests/test_blosc1_compat.c	[]	[]
/src/c-blosc2/plugins/filters/ndmean/test_ndmean_mean.c	[]	[]
/src/c-blosc2/examples/vlblocks.c	[]	[]
/src/c-blosc2/blosc/shuffle-avx2.c	[]	[]
/src/c-blosc2/plugins/filters/int_trunc/int_trunc.c	[]	[]
/src/c-blosc2/blosc/trunc-prec.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	[]
/src/c-blosc2/tests/test_api.c	[]	[]
/src/c-blosc2/tests/test_frame_trailer_neg_nvlmeta.c	[]	[]
/src/c-blosc2/tests/test_empty_buffer.c	[]	[]
/src/c-blosc2/tests/test_shared_pool.c	[]	[]
/src/c-blosc2/bench/get_sparse.c	[]	[]
/src/c-blosc2/tests/test_common.h	[]	[]
/src/c-blosc2/tests/test_sframe.c	[]	[]
/src/c-blosc2/blosc/shuffle-generic.h	[]	[]
/src/c-blosc2/tests/test_shuffle_roundtrip_altivec.c	[]	[]
/src/c-blosc2/bench/zero_runlen.c	[]	[]
/src/c-blosc2/bench/b2nd/bench_zfp_getitem.c	[]	[]
/src/c-blosc2/blosc/shuffle-generic.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/tests/test_shuffle_roundtrip_generic.c	[]	[]
/src/c-blosc2/tests/test_maskout.c	[]	[]
/src/c-blosc2/plugins/filters/int_trunc/test_int_trunc.c	[]	[]
/src/c-blosc2/tests/test_b2nd_set_slice_lock.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-avx2.c	[]	[]
/src/c-blosc2/tests/test_udio.c	[]	[]
/src/c-blosc2/plugins/codecs/zfp/test_zfp_prec_float.c	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/ndlz4x4.c	[]	[]
/src/c-blosc2/tests/test_frame_lock.c	[]	[]
/src/c-blosc2/blosc/blosclz.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/tests/test_reorder_offsets.c	[]	[]
/src/c-blosc2/tests/b2nd/test_common.h	[]	[]
/src/c-blosc2/compat/filegen-vl.c	[]	[]
/src/c-blosc2/tests/test_schunk_get_sparse.c	['tests/fuzz/fuzz_compress_frame.c']	[]
/src/c-blosc2/include/b2nd.h	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	[]
/src/c-blosc2/tests/b2nd/test_b2nd_get_sparse.c	[]	[]
/src/c-blosc2/bench/frame_lock_bench.c	[]	[]
/src/c-blosc2/plugins/filters/ndmean/ndmean.c	[]	[]
/src/c-blosc2/blosc/b2nd.c	[]	[]
/src/c-blosc2/blosc/delta.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/tests/test_lazychunk.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-altivec.c	[]	[]
/src/c-blosc2/tests/test_get_slice_buffer.c	[]	[]
/src/c-blosc2/tests/test_blosclz_bounds.c	[]	[]
/src/c-blosc2/tests/test_growth_swmr.c	[]	[]
/src/c-blosc2/tests/test_b2nd_multiwriter_lock.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-generic.h	[]	[]
/src/c-blosc2/tests/test_vl_block_overflow.c	[]	[]
/src/c-blosc2/tests/test_bitshuffle_leftovers.c	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/xxhash.h	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_concatenate.c	[]	[]
/src/c-blosc2/tests/test_stdio_validation.c	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/ndlz8x8.c	[]	[]
/src/c-blosc2/tests/test_getitem.c	[]	[]
/src/c-blosc2/tests/test_shuffle_roundtrip.c	[]	[]
/src/c-blosc2/tests/test_urfilter_delta.c	[]	[]
/src/c-blosc2/blosc/directories.c	['tests/fuzz/fuzz_compress_frame.c']	[]
/src/c-blosc2/blosc/transpose-altivec.h	[]	[]
/src/c-blosc2/tests/test_frame.c	[]	[]
/src/c-blosc2/tests/test_variable_chunks.c	[]	[]
/src/c-blosc2/bench/create_frame.c	[]	[]
/src/c-blosc2/tests/test_bitshuffle_roundtrip.c	[]	[]
/src/c-blosc2/plugins/codecs/zfp/test_zfp_rate_float.c	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_slice_nchunks_mismatch.c	[]	[]
/src/c-blosc2/blosc/blosc2-stdio.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/tests/test_schunk_min_header_chunk.c	[]	[]
/src/c-blosc2/tests/test_mmap.c	[]	[]
/src/c-blosc2/plugins/filters/ndcell/test_ndcell_oversized_blockshape.c	[]	[]
/src/c-blosc2/tests/test_stale_sframe.c	[]	[]
/src/c-blosc2/include/blosc2.h	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/tests/test_urfilters.c	[]	[]
/src/c-blosc2/tests/test_race.c	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_resize.c	[]	[]
/src/c-blosc2/tests/test_nolock.c	[]	[]
/src/c-blosc2/blosc/threading.h	[]	[]
/src/c-blosc2/tests/test_special_zero_nonmultiple.c	[]	[]
/src/c-blosc2/tests/test_lazychunk_memcpyed.c	[]	[]
/src/c-blosc2/blosc/fastcopy.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/tests/test_frame_metalayer_overflow.c	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_shape_overflow.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-sse2.c	[]	[]
/src/c-blosc2/blosc/blosc2.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/tests/test_schunk_header.c	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/test_ndlz.c	[]	[]
/src/c-blosc2/tests/test_postfilter.c	[]	[]
/src/c-blosc2/plugins/codecs/zfp/blosc2-zfp.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/bench/sframe_bench.c	[]	[]
/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/plugins/codecs/zfp/test_zfp_acc_float.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-neon.c	[]	[]
/src/c-blosc2/examples/schunk_postfilter.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/bench/bench_compact_tail.c	[]	[]
/src/c-blosc2/tests/test_insert_chunk.c	[]	[]
/src/c-blosc2/tests/b2nd/test_b2nd_zero_chunkshape_nonzero_shape.c	[]	[]
/src/c-blosc2/tests/test_get_slice_nchunks.c	[]	[]
/src/c-blosc2/tests/test_frame_malformed_offsets.c	[]	[]
/src/c-blosc2/blosc/sframe.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	[]
/src/c-blosc2/tests/test_frame_malformed_trailer_len.c	[]	[]
/src/c-blosc2/tests/test_compact_tail_update.c	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/ndlz.c	[]	[]
/src/c-blosc2/examples/b2nd/example_frame_generator.c	[]	[]
/src/c-blosc2/bench/b2bench.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	[]
/src/c-blosc2/tests/test_schunk_frame.c	[]	[]
/src/c-blosc2/tests/test_frame_lazychunk_malformed_cbytes.c	[]	[]
/src/c-blosc2/plugins/codecs/codecs-registry.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']
/src/c-blosc2/blosc/win32/threading.c	[]	[]
/src/c-blosc2/blosc/bitshuffle-avx512.c	[]	[]
/src/c-blosc2/tests/test_sframe_special_eviction.c	['tests/fuzz/fuzz_decompress_chunk.c', 'tests/fuzz/fuzz_decompress_frame.c', 'tests/fuzz/fuzz_compress_frame.c', 'tests/fuzz/fuzz_compress_chunk.c']	[]
/src/c-blosc2/plugins/filters/bytedelta/test_bytedelta.c	[]	[]
/src/c-blosc2/blosc/context.h	[]	[]
/src/c-blosc2/tests/test_nthreads.c	[]	[]
/src/c-blosc2/tests/test_set_slice_buffer.c	[]	[]
/src/c-blosc2/tests/test_update_chunk.c	[]	[]
/src/c-blosc2/blosc/shuffle-sse2.c	[]	[]
/src/c-blosc2/tests/test_shuffle_roundtrip_neon.c	[]	[]
/src/c-blosc2/plugins/codecs/ndlz/ndlz-private.h	[]	[]
/src/c-blosc2/tests/test_schunk.c	[]	[]
/src/c-blosc2/tests/b2nd/cutest.h	[]	[]
/src/c-blosc2/tests/test_insert_chunk_reopen.c	[]	[]
/src/c-blosc2/tests/test_shared_thread_pool.c	[]	[]
/src/c-blosc2/tests/test_urcodecs.c	[]	[]
/src/c-blosc2/include/blosc2/blosc2-common.h	[]	[]
/src/c-blosc2/blosc/bitshuffle-generic.c	[]	[]

Directories in report

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

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