Fuzz introspector: zxc_fuzzer_decompress
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
5 55 zxc_dctx_carve call site: 00055 zxc_cctx_attach_dict_huf
3 19 zxc_decompress call site: 00019 zxc_probe_without_dst
3 61 zxc_pivco_tree_build call site: 00061 zxc_cctx_attach_dict_huf
1 28 zxc_dctx_decode_frame call site: 00028 zxc_dict_id
1 48 zxc_cctx_init call site: 00048 zxc_dctx_entropy_sizes
1 53 zxc_cctx_init_in_workspace call site: 00053 zxc_aligned_free

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 zxc_get_decompressed_size [function] [call site] 00001
2 zxc_scan_container [function] [call site] 00002
3 zxc_scan_read [function] [call site] 00003
3 zxc_read_file_header [function] [call site] 00004
3 zxc_scan_frame [function] [call site] 00005
4 zxc_scan_read [function] [call site] 00006
4 zxc_short_input_verdict [function] [call site] 00007
5 zxc_read_file_header [function] [call site] 00008
4 zxc_scan_read [function] [call site] 00009
4 zxc_parse_file_footer [function] [call site] 00010
5 zxc_load_le_n [function] [call site] 00011
5 zxc_load_le_n [function] [call site] 00012
4 zxc_scan_read [function] [call site] 00013
4 zxc_frame_tail_len [function] [call site] 00014
4 zxc_read_frame_info [function] [call site] 00015
5 zxc_read_file_header [function] [call site] 00016
5 zxc_parse_file_footer [function] [call site] 00017
1 zxc_decompress [function] [call site] 00018
2 zxc_short_input_verdict [function] [call site] 00019
2 zxc_probe_without_dst [function] [call site] 00020
3 zxc_scan_container [function] [call site] 00021
3 zxc_decompress_oneshot [function] [call site] 00022
4 zxc_dctx_decode_container [function] [call site] 00023
5 zxc_container_next [function] [call site] 00024
6 zxc_scan_read [function] [call site] 00025
6 zxc_magic_prefix_ok [function] [call site] 00026
5 zxc_dctx_decode_frame [function] [call site] 00027
6 zxc_read_file_header [function] [call site] 00028
6 zxc_dict_id [function] [call site] 00029
6 zxc_read_block_header [function] [call site] 00030
6 zxc_check_eof_header [function] [call site] 00031
7 zxc_write_block_header [function] [call site] 00032
7 memcmp [call site] 00033
6 zxc_check_seek_header [function] [call site] 00034
7 zxc_seek_table_header [function] [call site] 00035
8 zxc_write_block_header [function] [call site] 00036
7 memcmp [call site] 00037
6 zxc_check_file_footer [function] [call site] 00038
7 zxc_encode_footer [function] [call site] 00039
8 zxc_store_le_n [function] [call site] 00040
8 zxc_store_le_n [function] [call site] 00041
7 memcmp [call site] 00042
6 zxc_dctx_carve [function] [call site] 00043
7 zxc_cctx_free [function] [call site] 00044
8 zxc_aligned_free [function] [call site] 00045
8 zxc_aligned_free [function] [call site] 00046
7 zxc_cctx_init [function] [call site] 00047
8 compute_cctx_layout [function] [call site] 00048
9 zxc_dctx_entropy_sizes [function] [call site] 00049
8 zxc_aligned_malloc [function] [call site] 00050
9 posix_memalign [call site] 00051
8 zxc_cctx_init_in_workspace [function] [call site] 00052
9 compute_cctx_layout [function] [call site] 00053
8 zxc_aligned_free [function] [call site] 00054
7 zxc_ctx_sync_dict_huf [function] [call site] 00055
8 memcmp [call site] 00056
8 zxc_cctx_attach_dict_huf [function] [call site] 00057
9 zxc_huf_dict_tree_build [function] [call site] 00058
10 zxc_huf_unpack_lengths_default [function] [call site] 00059
10 zxc_pivco_tree_build [function] [call site] 00060
11 zxc_pivco_bitrev_permute [function] [call site] 00061
10 zxc_pivco_codes [function] [call site] 00062
8 zxc_cctx_attach_dict_huf [function] [call site] 00063
6 zxc_decompress_chunk_wrapper [function] [call site] 00064
6 zxc_decompress_chunk_wrapper [function] [call site] 00065
6 zxc_decompress_chunk_wrapper [function] [call site] 00066
4 zxc_cctx_free [function] [call site] 00067
2 zxc_decompress_oneshot [function] [call site] 00068