Fuzz introspector: zxc_fuzzer_seekable
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
4 15 zxc_cctx_attach_dict_huf call site: 00015 zxc_pivco_tree_build
4 22 zxc_compress call site: 00022 zxc_compress_chunk_wrapper
4 47 zxc_seekable_free call site: 00047 zxc_seekable_free
4 91 zxc_seek_mt_worker call site: 00091 zxc_cctx_free
3 29 zxc_compress call site: 00029 zxc_cctx_free
3 119 LLVMFuzzerTestOneInput call site: 00119 zxc_seekable_decompress_range
1 7 zxc_cctx_init call site: 00007 zxc_dctx_entropy_sizes
1 12 zxc_cctx_init_in_workspace call site: 00012 zxc_aligned_free
1 20 zxc_cctx_free call site: 00020 zxc_aligned_free
1 45 zxc_seekable_parse call site: 00045 zxc_seekable_free
1 52 zxc_seekable_parse call site: 00052 zxc_seekable_free
1 65 LLVMFuzzerTestOneInput call site: 00065 zxc_seekable_free

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 zxc_compress_bound [function] [call site] 00001
1 realloc [call site] 00002
1 zxc_compress [function] [call site] 00003
2 zxc_level_clamp [function] [call site] 00004
2 zxc_dict_id [function] [call site] 00005
2 zxc_cctx_init [function] [call site] 00006
3 compute_cctx_layout [function] [call site] 00007
4 zxc_dctx_entropy_sizes [function] [call site] 00008
3 zxc_aligned_malloc [function] [call site] 00009
4 posix_memalign [call site] 00010
3 zxc_cctx_init_in_workspace [function] [call site] 00011
4 compute_cctx_layout [function] [call site] 00012
3 zxc_aligned_free [function] [call site] 00013
2 zxc_cctx_attach_dict_huf [function] [call site] 00014
3 zxc_huf_dict_tree_build [function] [call site] 00015
4 zxc_huf_unpack_lengths_default [function] [call site] 00016
4 zxc_pivco_tree_build [function] [call site] 00017
4 zxc_pivco_decode_aux_build [function] [call site] 00018
2 zxc_cctx_free [function] [call site] 00019
3 zxc_aligned_free [function] [call site] 00020
3 zxc_aligned_free [function] [call site] 00021
2 zxc_write_file_header [function] [call site] 00022
2 zxc_cctx_free [function] [call site] 00023
2 zxc_cctx_free [function] [call site] 00024
2 zxc_cctx_free [function] [call site] 00025
2 zxc_compress_chunk_wrapper [function] [call site] 00026
3 zxc_compress_dispatch_init [function] [call site] 00027
4 zxc_detect_cpu_features [function] [call site] 00028
2 zxc_compress_chunk_wrapper [function] [call site] 00029
2 zxc_cctx_free [function] [call site] 00030
2 realloc [call site] 00031
2 zxc_cctx_free [function] [call site] 00032
2 zxc_cctx_free [function] [call site] 00033
2 zxc_write_block_header [function] [call site] 00034
2 zxc_write_seek_table [function] [call site] 00035
3 zxc_seek_table_size [function] [call site] 00036
3 zxc_write_block_header [function] [call site] 00037
2 zxc_write_file_footer [function] [call site] 00038
1 zxc_seekable_open [function] [call site] 00039
2 zxc_seekable_parse [function] [call site] 00040
3 zxc_read_file_header [function] [call site] 00041
3 zxc_read_block_header [function] [call site] 00042
3 calloc [call site] 00043
3 calloc [call site] 00044
3 calloc [call site] 00045
3 zxc_seekable_free [function] [call site] 00046
4 zxc_cctx_free [function] [call site] 00047
3 zxc_seekable_free [function] [call site] 00048
3 zxc_seekable_free [function] [call site] 00049
3 zxc_seekable_free [function] [call site] 00050
3 zxc_seekable_free [function] [call site] 00051
3 zxc_read_block_header [function] [call site] 00052
3 zxc_seekable_free [function] [call site] 00053
1 zxc_seekable_get_num_blocks [function] [call site] 00054
1 zxc_seekable_get_decompressed_size [function] [call site] 00055
1 __assert_fail [call site] 00056
1 zxc_seekable_get_block_comp_size [function] [call site] 00057
1 zxc_seekable_get_block_decomp_size [function] [call site] 00058
1 __assert_fail [call site] 00059
1 __assert_fail [call site] 00060
1 zxc_seekable_get_block_comp_size [function] [call site] 00061
1 __assert_fail [call site] 00062
1 zxc_seekable_get_block_decomp_size [function] [call site] 00063
1 __assert_fail [call site] 00064
1 realloc [call site] 00065
1 zxc_seekable_free [function] [call site] 00066
1 zxc_seekable_decompress_range_mt [function] [call site] 00067
2 zxc_seek_find_block [function] [call site] 00068
2 zxc_seek_find_block [function] [call site] 00069
2 zxc_seek_get_num_procs [function] [call site] 00070
3 sysconf [call site] 00071
2 zxc_seekable_decompress_range [function] [call site] 00072
3 zxc_cctx_init [function] [call site] 00073
3 zxc_cctx_attach_dict_huf [function] [call site] 00074
3 zxc_cctx_free [function] [call site] 00075
3 zxc_seek_find_block [function] [call site] 00076
3 zxc_seek_find_block [function] [call site] 00077
3 zxc_seek_read_block [function] [call site] 00078
3 zxc_decompress_chunk_wrapper [function] [call site] 00079
4 zxc_decompress_dispatch_init [function] [call site] 00080
5 zxc_detect_cpu_features [function] [call site] 00081
3 zxc_seek_decomp_offset [function] [call site] 00082
2 calloc [call site] 00083
2 zxc_seek_decomp_offset [function] [call site] 00084
2 zxc_seek_decomp_size [function] [call site] 00085
2 zxc_seek_thread_create [function] [call site] 00086
3 pthread_create [call site] 00087
2 zxc_seek_mt_worker [function] [call site] 00088
3 zxc_cctx_init [function] [call site] 00089
3 zxc_seek_mt_fail_stripe [function] [call site] 00090
3 zxc_cctx_attach_dict_huf [function] [call site] 00091
3 zxc_cctx_free [function] [call site] 00092
3 zxc_seek_mt_fail_stripe [function] [call site] 00093
3 zxc_cctx_free [function] [call site] 00094
3 zxc_seek_mt_fail_stripe [function] [call site] 00095
3 zxc_seek_read_block_mt [function] [call site] 00096
3 zxc_decompress_chunk_wrapper [function] [call site] 00097
3 zxc_cctx_free [function] [call site] 00098
2 zxc_seek_mt_fail_stripe [function] [call site] 00099
2 zxc_seek_thread_join [function] [call site] 00100
3 pthread_join [call site] 00101
1 zxc_seekable_decompress_range [function] [call site] 00102
1 __assert_fail [call site] 00103
1 memcmp [call site] 00104
1 __assert_fail [call site] 00105
1 zxc_seekable_decompress_range [function] [call site] 00106
1 __assert_fail [call site] 00107
1 memcmp [call site] 00108
1 __assert_fail [call site] 00109
1 zxc_seekable_decompress_range [function] [call site] 00110
1 __assert_fail [call site] 00111
1 zxc_seekable_decompress_range [function] [call site] 00112
1 __assert_fail [call site] 00113
1 zxc_seekable_get_num_blocks [function] [call site] 00114
1 __assert_fail [call site] 00115
1 zxc_seekable_get_decompressed_size [function] [call site] 00116
1 __assert_fail [call site] 00117
1 zxc_seekable_free [function] [call site] 00118
1 zxc_seekable_open [function] [call site] 00119
1 zxc_seekable_get_decompressed_size [function] [call site] 00120
1 zxc_seekable_decompress_range [function] [call site] 00121
1 zxc_seekable_free [function] [call site] 00122