Fuzz introspector: zxc_fuzzer_roundtrip
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
19 48 LLVMFuzzerTestOneInput call site: 00048 zxc_probe_without_dst
6 6 zxc_compress call site: 00006 zxc_write_empty_frame
4 33 zxc_compress call site: 00033 zxc_cctx_free
4 41 zxc_compress call site: 00041 zxc_write_seek_table
4 88 zxc_dctx_carve call site: 00088 zxc_cctx_attach_dict_huf
3 24 zxc_compress call site: 00024 zxc_huf_dict_tree_build
3 78 zxc_check_eof_header call site: 00078 zxc_check_seek_header
2 28 zxc_pivco_tree_build call site: 00028 zxc_cctx_free
1 17 zxc_cctx_init call site: 00017 zxc_dctx_entropy_sizes
1 22 zxc_cctx_init_in_workspace call site: 00022 zxc_aligned_free
1 38 zxc_compress call site: 00038 zxc_cctx_free
1 73 zxc_dctx_decode_frame call site: 00073 zxc_dict_id

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 zxc_compress_bound [function] [call site] 00001
1 realloc [call site] 00002
1 zxc_max_level [function] [call site] 00003
1 zxc_compress [function] [call site] 00004
2 zxc_level_clamp [function] [call site] 00005
2 zxc_dict_id [function] [call site] 00006
2 zxc_write_empty_frame [function] [call site] 00007
3 zxc_write_file_header [function] [call site] 00008
3 zxc_write_block_header [function] [call site] 00009
3 zxc_seek_table_header [function] [call site] 00010
4 zxc_write_block_header [function] [call site] 00011
3 zxc_write_file_footer [function] [call site] 00012
4 zxc_encode_footer [function] [call site] 00013
5 zxc_store_le_n [function] [call site] 00014
5 zxc_store_le_n [function] [call site] 00015
2 zxc_cctx_init [function] [call site] 00016
3 compute_cctx_layout [function] [call site] 00017
4 zxc_dctx_entropy_sizes [function] [call site] 00018
3 zxc_aligned_malloc [function] [call site] 00019
4 posix_memalign [call site] 00020
3 zxc_cctx_init_in_workspace [function] [call site] 00021
4 compute_cctx_layout [function] [call site] 00022
3 zxc_aligned_free [function] [call site] 00023
2 zxc_cctx_attach_dict_huf [function] [call site] 00024
3 zxc_huf_dict_tree_build [function] [call site] 00025
4 zxc_huf_unpack_lengths_default [function] [call site] 00026
4 zxc_pivco_tree_build [function] [call site] 00027
5 zxc_pivco_bitrev_permute [function] [call site] 00028
4 zxc_pivco_codes [function] [call site] 00029
2 zxc_cctx_free [function] [call site] 00030
3 zxc_aligned_free [function] [call site] 00031
3 zxc_aligned_free [function] [call site] 00032
2 zxc_write_file_header [function] [call site] 00033
2 zxc_cctx_free [function] [call site] 00034
2 zxc_cctx_free [function] [call site] 00035
2 zxc_cctx_free [function] [call site] 00036
2 zxc_compress_chunk_wrapper [function] [call site] 00037
2 zxc_compress_chunk_wrapper [function] [call site] 00038
2 zxc_cctx_free [function] [call site] 00039
2 zxc_cctx_free [function] [call site] 00040
2 zxc_write_block_header [function] [call site] 00041
2 zxc_write_seek_table [function] [call site] 00042
3 zxc_seek_table_size [function] [call site] 00043
3 zxc_seek_table_header [function] [call site] 00044
3 zxc_seek_write_group [function] [call site] 00045
2 zxc_write_file_footer [function] [call site] 00046
1 realloc [call site] 00047
1 zxc_decompress [function] [call site] 00048
2 zxc_short_input_verdict [function] [call site] 00049
3 zxc_read_file_header [function] [call site] 00050
2 zxc_probe_without_dst [function] [call site] 00051
3 zxc_scan_container [function] [call site] 00052
4 zxc_scan_read [function] [call site] 00053
4 zxc_read_file_header [function] [call site] 00054
4 zxc_scan_frame [function] [call site] 00055
5 zxc_scan_read [function] [call site] 00056
5 zxc_short_input_verdict [function] [call site] 00057
5 zxc_scan_read [function] [call site] 00058
5 zxc_parse_file_footer [function] [call site] 00059
6 zxc_load_le_n [function] [call site] 00060
6 zxc_load_le_n [function] [call site] 00061
5 zxc_scan_read [function] [call site] 00062
5 zxc_frame_tail_len [function] [call site] 00063
5 zxc_read_frame_info [function] [call site] 00064
6 zxc_read_file_header [function] [call site] 00065
6 zxc_parse_file_footer [function] [call site] 00066
3 zxc_decompress_oneshot [function] [call site] 00067
4 zxc_dctx_decode_container [function] [call site] 00068
5 zxc_container_next [function] [call site] 00069
6 zxc_scan_read [function] [call site] 00070
6 zxc_magic_prefix_ok [function] [call site] 00071
5 zxc_dctx_decode_frame [function] [call site] 00072
6 zxc_read_file_header [function] [call site] 00073
6 zxc_dict_id [function] [call site] 00074
6 zxc_read_block_header [function] [call site] 00075
6 zxc_check_eof_header [function] [call site] 00076
7 zxc_write_block_header [function] [call site] 00077
7 memcmp [call site] 00078
6 zxc_check_seek_header [function] [call site] 00079
7 zxc_seek_table_header [function] [call site] 00080
7 memcmp [call site] 00081
6 zxc_check_file_footer [function] [call site] 00082
7 zxc_encode_footer [function] [call site] 00083
7 memcmp [call site] 00084
6 zxc_dctx_carve [function] [call site] 00085
7 zxc_cctx_free [function] [call site] 00086
7 zxc_cctx_init [function] [call site] 00087
7 zxc_ctx_sync_dict_huf [function] [call site] 00088
8 memcmp [call site] 00089
8 zxc_cctx_attach_dict_huf [function] [call site] 00090
8 zxc_cctx_attach_dict_huf [function] [call site] 00091
6 zxc_decompress_chunk_wrapper [function] [call site] 00092
6 zxc_decompress_chunk_wrapper [function] [call site] 00093
6 zxc_decompress_chunk_wrapper [function] [call site] 00094
4 zxc_cctx_free [function] [call site] 00095
2 zxc_decompress_oneshot [function] [call site] 00096
1 __assert_fail [call site] 00097
1 memcmp [call site] 00098
1 __assert_fail [call site] 00099