Fuzz introspector: zxc_fuzzer_pstream
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
3 36 zxc_compress_block call site: 00036 zxc_cctx_init
3 49 LLVMFuzzerTestOneInput call site: 00049 cs_stage_file_header
3 103 zxc_dstream_decompress call site: 00103 zxc_dstream_free
2 14 zxc_cctx_init_in_workspace call site: 00014 zxc_free_cctx
2 18 zxc_cctx_free call site: 00018 zxc_free_cctx
2 24 LLVMFuzzerTestOneInput call site: 00024 zxc_cstream_free
2 46 zxc_cstream_compress call site: 00046 zxc_cstream_free
2 92 ds_handle_need_block_header call site: 00092 realloc
1 9 zxc_cctx_init call site: 00009 zxc_dctx_entropy_sizes
1 21 LLVMFuzzerTestOneInput call site: 00021 zxc_cstream_free
1 31 zxc_cstream_compress call site: 00031 cs_compress_block_from
1 42 zxc_compress_block call site: 00042 cs_set_error

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 derive_chunk_size [function] [call site] 00001
1 zxc_cstream_create [function] [call site] 00002
2 calloc [call site] 00003
2 zxc_level_clamp [function] [call site] 00004
2 zxc_create_cctx [function] [call site] 00005
3 calloc [call site] 00006
3 zxc_level_clamp [function] [call site] 00007
3 zxc_cctx_init [function] [call site] 00008
4 compute_cctx_layout [function] [call site] 00009
5 zxc_dctx_entropy_sizes [function] [call site] 00010
4 zxc_aligned_malloc [function] [call site] 00011
5 posix_memalign [call site] 00012
4 zxc_cctx_init_in_workspace [function] [call site] 00013
5 compute_cctx_layout [function] [call site] 00014
4 zxc_aligned_free [function] [call site] 00015
2 zxc_free_cctx [function] [call site] 00016
3 zxc_cctx_free [function] [call site] 00017
4 zxc_aligned_free [function] [call site] 00018
4 zxc_aligned_free [function] [call site] 00019
2 zxc_free_cctx [function] [call site] 00020
1 zxc_compress_bound [function] [call site] 00021
1 zxc_cstream_free [function] [call site] 00022
2 zxc_free_cctx [function] [call site] 00023
1 realloc [call site] 00024
1 zxc_cstream_free [function] [call site] 00025
1 zxc_cstream_free [function] [call site] 00026
1 zxc_cstream_compress [function] [call site] 00027
2 cs_stage_file_header [function] [call site] 00028
3 zxc_write_file_header [function] [call site] 00029
2 cs_set_error [function] [call site] 00030
2 cs_drain_pending [function] [call site] 00031
2 cs_compress_block_from [function] [call site] 00032
3 zxc_compress_block_bound [function] [call site] 00033
3 realloc [call site] 00034
3 zxc_compress_block [function] [call site] 00035
4 zxc_level_clamp [function] [call site] 00036
4 zxc_cctx_free [function] [call site] 00037
4 zxc_cctx_init [function] [call site] 00038
4 zxc_compress_chunk_wrapper [function] [call site] 00039
5 zxc_compress_dispatch_init [function] [call site] 00040
6 zxc_detect_cpu_features [function] [call site] 00041
4 zxc_compress_chunk_wrapper [function] [call site] 00042
2 cs_set_error [function] [call site] 00043
2 cs_compress_one_block [function] [call site] 00044
3 cs_compress_block_from [function] [call site] 00045
2 cs_set_error [function] [call site] 00046
1 zxc_cstream_free [function] [call site] 00047
1 zxc_cstream_free [function] [call site] 00048
1 zxc_cstream_end [function] [call site] 00049
2 cs_stage_file_header [function] [call site] 00050
2 cs_set_error [function] [call site] 00051
2 cs_drain_pending [function] [call site] 00052
2 cs_compress_one_block [function] [call site] 00053
2 cs_set_error [function] [call site] 00054
2 cs_stage_eof [function] [call site] 00055
3 realloc [call site] 00056
3 zxc_write_block_header [function] [call site] 00057
2 cs_set_error [function] [call site] 00058
2 cs_drain_pending [function] [call site] 00059
2 cs_stage_eof [function] [call site] 00060
2 cs_set_error [function] [call site] 00061
2 cs_drain_pending [function] [call site] 00062
2 cs_stage_footer [function] [call site] 00063
3 realloc [call site] 00064
3 zxc_write_file_footer [function] [call site] 00065
2 cs_set_error [function] [call site] 00066
2 cs_drain_pending [function] [call site] 00067
1 zxc_cstream_free [function] [call site] 00068
1 zxc_cstream_free [function] [call site] 00069
1 realloc [call site] 00070
1 drip_decompress [function] [call site] 00071
2 zxc_dstream_create [function] [call site] 00072
3 calloc [call site] 00073
2 zxc_dstream_finished [function] [call site] 00074
2 zxc_dstream_free [function] [call site] 00075
3 zxc_cctx_free [function] [call site] 00076
2 zxc_dstream_decompress [function] [call site] 00077
3 ds_handle_need_file_header [function] [call site] 00078
4 ds_pull_scratch [function] [call site] 00079
4 zxc_read_file_header [function] [call site] 00080
4 ds_set_error [function] [call site] 00081
4 zxc_compress_block_bound [function] [call site] 00082
4 ds_set_error [function] [call site] 00083
4 ds_set_error [function] [call site] 00084
4 zxc_cctx_init [function] [call site] 00085
4 ds_set_error [function] [call site] 00086
3 ds_handle_need_block_header [function] [call site] 00087
4 ds_pull_scratch [function] [call site] 00088
4 zxc_read_block_header [function] [call site] 00089
4 ds_set_error [function] [call site] 00090
4 ds_set_error [function] [call site] 00091
4 ds_set_error [function] [call site] 00092
4 realloc [call site] 00093
4 ds_set_error [function] [call site] 00094
3 ds_pull_payload [function] [call site] 00095
3 zxc_decompress_chunk_wrapper [function] [call site] 00096
4 zxc_decompress_dispatch_init [function] [call site] 00097
5 zxc_detect_cpu_features [function] [call site] 00098
3 ds_set_error [function] [call site] 00099
3 ds_drain_decoded [function] [call site] 00100
3 ds_pull_scratch [function] [call site] 00101
3 zxc_read_block_header [function] [call site] 00102
3 ds_pull_scratch [function] [call site] 00103
3 ds_set_error [function] [call site] 00104
3 ds_set_error [function] [call site] 00105
2 zxc_dstream_free [function] [call site] 00106
2 zxc_dstream_free [function] [call site] 00107
1 __assert_fail [call site] 00108
1 memcmp [call site] 00109
1 __assert_fail [call site] 00110
1 derive_chunk_size [function] [call site] 00111
1 zxc_dstream_create [function] [call site] 00112
1 zxc_dstream_decompress [function] [call site] 00113
1 zxc_dstream_free [function] [call site] 00114