Fuzz introspector: fuzz_encode_stream
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
8 33 lzma_index_init call site: 00033 __assert_fail
2 2 LLVMFuzzerTestOneInput call site: 00002 fprintf
2 17 index_tree_end call site: 00017 index_tree_node_end
2 81 lzma_end call site: 00081 fprintf
2 86 lzma_code call site: 00086 fprintf
1 0 EP call site: 00000 fprintf
1 45 lzma_stream_header_encode call site: 00045 stream_encoder_update
1 49 lzma_filters_copy call site: 00049 lzma_free
1 52 block_encoder_init call site: 00052 lzma_vli_size
1 54 lzma_vli_size call site: 00054 lzma_vli_size
1 65 lzma_block_encoder_init call site: 00065 lzma_sha256_init
1 75 stream_encoder_update call site: 00075 __assert_fail

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 fprintf [call site] 00001
1 lzma_lzma_preset [function] [call site] 00002
1 fprintf [call site] 00003
1 abort [call site] 00004
1 prepare_stream [function] [call site] 00005
1 lzma_stream_encoder [function] [call site] 00006
2 lzma_strm_init [function] [call site] 00007
3 lzma_alloc [function] [call site] 00008
2 stream_encoder_init [function] [call site] 00009
3 stream_encoder_init [function] [call site] 00010
4 lzma_next_end [function] [call site] 00011
5 lzma_free [function] [call site] 00012
4 lzma_alloc [function] [call site] 00013
4 lzma_index_end [function] [call site] 00014
5 index_tree_end [function] [call site] 00015
6 __assert_fail [call site] 00016
6 index_tree_node_end [function] [call site] 00017
7 index_tree_node_end [function] [call site] 00018
8 index_tree_node_end [function] [call site] 00019
5 index_stream_end [function] [call site] 00020
6 index_tree_end [function] [call site] 00021
6 lzma_free [function] [call site] 00022
6 lzma_free [function] [call site] 00023
5 lzma_free [function] [call site] 00024
4 lzma_index_init [function] [call site] 00025
5 index_init_plain [function] [call site] 00026
6 lzma_alloc [function] [call site] 00027
6 index_tree_init [function] [call site] 00028
5 index_stream_init [function] [call site] 00029
6 lzma_alloc [function] [call site] 00030
6 index_tree_init [function] [call site] 00031
5 lzma_free [function] [call site] 00032
5 index_tree_append [function] [call site] 00033
6 __assert_fail [call site] 00034
6 __assert_fail [call site] 00035
6 __assert_fail [call site] 00036
6 __assert_fail [call site] 00037
6 __assert_fail [call site] 00040
6 __assert_fail [call site] 00041
4 lzma_stream_header_encode [function] [call site] 00042
5 stream_flags_encode [function] [call site] 00043
5 lzma_crc32 [function] [call site] 00044
5 write32ne [function] [call site] 00045
4 stream_encoder_update [function] [call site] 00046
5 lzma_filters_copy [function] [call site] 00047
6 lzma_alloc [function] [call site] 00048
6 __assert_fail [call site] 00049
6 lzma_free [function] [call site] 00050
5 block_encoder_init [function] [call site] 00051
6 lzma_block_header_size [function] [call site] 00052
7 lzma_vli_size [function] [call site] 00053
8 __assert_fail [call site] 00054
7 lzma_vli_size [function] [call site] 00055
7 lzma_filter_flags_size [function] [call site] 00056
8 lzma_properties_size [function] [call site] 00057
9 encoder_find [function] [call site] 00058
8 lzma_vli_size [function] [call site] 00059
6 lzma_block_encoder_init [function] [call site] 00060
7 lzma_block_encoder_init [function] [call site] 00061
8 lzma_next_end [function] [call site] 00062
8 lzma_check_is_supported [function] [call site] 00063
8 lzma_alloc [function] [call site] 00064
8 lzma_check_init [function] [call site] 00065
9 lzma_sha256_init [function] [call site] 00066
8 lzma_raw_encoder_init [function] [call site] 00067
9 lzma_raw_coder_init [function] [call site] 00068
10 lzma_validate_chain [function] [call site] 00069
10 lzma_next_filter_init [function] [call site] 00070
11 lzma_next_end [function] [call site] 00071
10 lzma_next_end [function] [call site] 00072
9 coder_find [function] [call site] 00073
10 encoder_find [function] [call site] 00074
5 lzma_filters_free [function] [call site] 00075
6 __assert_fail [call site] 00076
6 lzma_free [function] [call site] 00077
5 lzma_filters_free [function] [call site] 00078
2 lzma_end [function] [call site] 00079
3 lzma_next_end [function] [call site] 00080
3 lzma_free [function] [call site] 00081
1 fprintf [call site] 00082
1 abort [call site] 00083
1 fuzz_code [function] [call site] 00084
2 lzma_code [function] [call site] 00085
3 __assert_fail [call site] 00086
2 fprintf [call site] 00087
2 abort [call site] 00088