Fuzz introspector: zxc_fuzzer_inplace
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 65 zxc_dctx_carve call site: 00065 zxc_cctx_attach_dict_huf
5 91 zxc_compress call site: 00091 zxc_write_empty_frame
4 101 zxc_compress call site: 00101 zxc_cctx_free
3 71 zxc_pivco_tree_build call site: 00071 zxc_cctx_attach_dict_huf
2 22 zxc_scan_whole_frame call site: 00022 zxc_short_input_verdict
2 124 zxc_compress_block_at call site: 00124 zxc_cctx_init
1 40 zxc_dctx_decode_frame call site: 00040 zxc_dict_id
1 55 zxc_dctx_decode_frame call site: 00055 zxc_cctx_free
1 63 zxc_cctx_init call site: 00063 zxc_aligned_free
1 99 zxc_compress call site: 00099 zxc_cctx_free
1 106 zxc_compress call site: 00106 zxc_cctx_free
1 127 zxc_compress_block_resolved call site: 00127 zxc_compress_chunk_wrapper

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 run_ctx_init [function] [call site] 00001
2 zxc_create_dctx [function] [call site] 00002
3 calloc [call site] 00003
2 zxc_static_dctx_workspace_size [function] [call site] 00004
3 zxc_cctx_compute_workspace_size [function] [call site] 00005
4 compute_cctx_layout [function] [call site] 00006
5 zxc_dctx_entropy_sizes [function] [call site] 00007
2 aligned_alloc [call site] 00008
2 zxc_init_static_dctx [function] [call site] 00009
3 zxc_cctx_compute_workspace_size [function] [call site] 00010
3 zxc_cctx_init_in_workspace [function] [call site] 00011
4 compute_cctx_layout [function] [call site] 00012
1 fuzz_one [function] [call site] 00013
2 decode_inplace [function] [call site] 00014
3 zxc_decompress_inplace_bound [function] [call site] 00015
4 zxc_inplace_probe [function] [call site] 00016
5 zxc_buffer_frame_info [function] [call site] 00017
6 zxc_scan_whole_frame [function] [call site] 00018
7 zxc_scan_read [function] [call site] 00019
7 zxc_short_input_verdict [function] [call site] 00020
8 zxc_read_file_header [function] [call site] 00021
7 zxc_scan_frame [function] [call site] 00022
8 zxc_scan_read [function] [call site] 00023
8 zxc_short_input_verdict [function] [call site] 00024
8 zxc_scan_read [function] [call site] 00025
8 zxc_parse_file_footer [function] [call site] 00026
9 zxc_load_le_n [function] [call site] 00027
9 zxc_load_le_n [function] [call site] 00028
8 zxc_scan_read [function] [call site] 00029
8 zxc_frame_tail_len [function] [call site] 00030
8 zxc_read_frame_info [function] [call site] 00031
9 zxc_read_file_header [function] [call site] 00032
9 zxc_parse_file_footer [function] [call site] 00033
5 zxc_inplace_margin [function] [call site] 00034
3 zxc_decompress_inplace [function] [call site] 00035
4 zxc_inplace_prepare [function] [call site] 00036
5 zxc_inplace_probe [function] [call site] 00037
4 zxc_create_dctx [function] [call site] 00038
4 zxc_dctx_decode_frame [function] [call site] 00039
5 zxc_read_file_header [function] [call site] 00040
5 zxc_dict_id [function] [call site] 00041
5 zxc_read_block_header [function] [call site] 00042
5 zxc_check_eof_header [function] [call site] 00043
6 zxc_write_block_header [function] [call site] 00044
6 memcmp [call site] 00045
5 zxc_check_seek_header [function] [call site] 00046
6 zxc_seek_table_header [function] [call site] 00047
7 zxc_write_block_header [function] [call site] 00048
6 memcmp [call site] 00049
5 zxc_check_file_footer [function] [call site] 00050
6 zxc_encode_footer [function] [call site] 00051
7 zxc_store_le_n [function] [call site] 00052
7 zxc_store_le_n [function] [call site] 00053
6 memcmp [call site] 00054
5 zxc_dctx_carve [function] [call site] 00055
6 zxc_cctx_free [function] [call site] 00056
7 zxc_aligned_free [function] [call site] 00057
7 zxc_aligned_free [function] [call site] 00058
6 zxc_cctx_init [function] [call site] 00059
7 compute_cctx_layout [function] [call site] 00060
7 zxc_aligned_malloc [function] [call site] 00061
8 posix_memalign [call site] 00062
7 zxc_cctx_init_in_workspace [function] [call site] 00063
7 zxc_aligned_free [function] [call site] 00064
6 zxc_ctx_sync_dict_huf [function] [call site] 00065
7 memcmp [call site] 00066
7 zxc_cctx_attach_dict_huf [function] [call site] 00067
8 zxc_huf_dict_tree_build [function] [call site] 00068
9 zxc_huf_unpack_lengths_default [function] [call site] 00069
9 zxc_pivco_tree_build [function] [call site] 00070
10 zxc_pivco_bitrev_permute [function] [call site] 00071
9 zxc_pivco_codes [function] [call site] 00072
7 zxc_cctx_attach_dict_huf [function] [call site] 00073
5 zxc_decompress_chunk_wrapper [function] [call site] 00074
5 zxc_decompress_chunk_wrapper [function] [call site] 00075
5 zxc_decompress_chunk_wrapper [function] [call site] 00076
4 zxc_free_dctx [function] [call site] 00077
5 zxc_cctx_free [function] [call site] 00078
3 check_dctx [function] [call site] 00079
4 zxc_decompress_inplace_dctx [function] [call site] 00080
5 zxc_inplace_prepare [function] [call site] 00081
5 zxc_dctx_decode_frame [function] [call site] 00082
4 __assert_fail [call site] 00083
4 memcmp [call site] 00084
4 __assert_fail [call site] 00085
3 check_dctx [function] [call site] 00086
2 zxc_max_level [function] [call site] 00087
2 zxc_compress_bound [function] [call site] 00088
2 zxc_compress [function] [call site] 00089
3 zxc_level_clamp [function] [call site] 00090
3 zxc_dict_id [function] [call site] 00091
3 zxc_write_empty_frame [function] [call site] 00092
4 zxc_write_file_header [function] [call site] 00093
4 zxc_write_block_header [function] [call site] 00094
4 zxc_seek_table_header [function] [call site] 00095
4 zxc_write_file_footer [function] [call site] 00096
5 zxc_encode_footer [function] [call site] 00097
3 zxc_cctx_init [function] [call site] 00098
3 zxc_cctx_attach_dict_huf [function] [call site] 00099
3 zxc_cctx_free [function] [call site] 00100
3 zxc_write_file_header [function] [call site] 00101
3 zxc_cctx_free [function] [call site] 00102
3 zxc_cctx_free [function] [call site] 00103
3 zxc_cctx_free [function] [call site] 00104
3 zxc_compress_chunk_wrapper [function] [call site] 00105
3 zxc_compress_chunk_wrapper [function] [call site] 00106
3 zxc_cctx_free [function] [call site] 00107
3 zxc_cctx_free [function] [call site] 00108
3 zxc_write_block_header [function] [call site] 00109
3 zxc_write_seek_table [function] [call site] 00110
4 zxc_seek_table_size [function] [call site] 00111
4 zxc_seek_table_header [function] [call site] 00112
4 zxc_seek_write_group [function] [call site] 00113
3 zxc_write_file_footer [function] [call site] 00114
2 zxc_create_cctx [function] [call site] 00115
3 calloc [call site] 00116
3 zxc_cctx_base [function] [call site] 00117
4 zxc_level_clamp [function] [call site] 00118
3 zxc_cctx_init [function] [call site] 00119
2 zxc_compress_block [function] [call site] 00120
3 zxc_compress_block_at [function] [call site] 00121
4 zxc_cctx_resolve [function] [call site] 00122
5 zxc_level_clamp [function] [call site] 00123
4 zxc_compress_block_resolved [function] [call site] 00124
5 zxc_cctx_free [function] [call site] 00125
5 zxc_cctx_init [function] [call site] 00126
5 zxc_ctx_sync_dict_huf [function] [call site] 00127
5 zxc_compress_chunk_wrapper [function] [call site] 00128
5 zxc_compress_chunk_wrapper [function] [call site] 00129
2 zxc_free_cctx [function] [call site] 00130
3 zxc_cctx_free [function] [call site] 00131
2 zxc_write_block_header [function] [call site] 00132
2 zxc_write_file_footer [function] [call site] 00133
2 decode_inplace [function] [call site] 00134
2 memcmp [call site] 00135
2 __assert_fail [call site] 00136
2 zxc_parse_file_footer [function] [call site] 00137
2 abort [call site] 00138
2 zxc_write_file_footer [function] [call site] 00139
2 decode_inplace [function] [call site] 00140
2 __assert_fail [call site] 00141
1 zxc_free_dctx [function] [call site] 00142