Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
2	2	1 : View List ['abort']	2	2	bssl::Span ::operator[](unsignedlong)const	call site: 00000	/src/boringssl/include/openssl/span.h:165
2	2	1 : View List ['abort']	2	2	bssl::Span ::back()const	call site: 00000	/src/boringssl/include/openssl/span.h:158
2	2	1 : View List ['abort']	2	2	bssl::Span ::subspan(unsignedlong,unsignedlong)const	call site: 00000	/src/boringssl/include/openssl/span.h:173
2	2	1 : View List ['abort']	2	2	bssl::Span ::first(unsignedlong)const	call site: 00000	/src/boringssl/include/openssl/span.h:185
0	7	1 : View List ['CBS_get_bytes']	0	7	cbs_get_any_asn1_element(cbs_st,cbs_st,unsignedint,unsignedlong,int,int,int)	call site: 00000	/src/boringssl/crypto/bytestring/cbs.cc:379
0	7	1 : View List ['CBS_get_bytes']	0	7	cbs_get_any_asn1_element(cbs_st,cbs_st,unsignedint,unsignedlong,int,int,int)	call site: 00000	/src/boringssl/crypto/bytestring/cbs.cc:387
0	0	None	0	100	bssl::der::Parser::ReadConstructed(unsignedint,bssl::der::Parser*)	call site: 00000	/src/boringssl/pki/parser.cc:123
0	0	None	0	49	cbs_get_any_asn1_element(cbs_st,cbs_st,unsignedint,unsignedlong,int,int,int)	call site: 00000	/src/boringssl/crypto/bytestring/cbs.cc:312
0	0	None	0	49	cbs_get_any_asn1_element(cbs_st,cbs_st,unsignedint,unsignedlong,int,int,int)	call site: 00000	/src/boringssl/crypto/bytestring/cbs.cc:315
0	0	None	0	24	bssl::der::ParseBitString(bssl::der::Input)	call site: 00000	/src/boringssl/pki/parse_values.cc:277
0	0	None	0	7	cbs_get_any_asn1_element(cbs_st,cbs_st,unsignedint,unsignedlong,int,int,int)	call site: 00000	/src/boringssl/crypto/bytestring/cbs.cc:354
0	0	None	0	0	cbs_get_any_asn1_element(cbs_st,cbs_st,unsignedint,unsignedlong,int,int,int)	call site: 00000	/src/boringssl/crypto/bytestring/cbs.cc:394

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           bssl::der::Input::Input(unsigned char const*, unsigned long)

[function] [call site] 00001


             bssl::Span<unsigned char const>::Span(unsigned char const*, unsigned long)

[function] [call site] 00002


           bssl::der::Input::Input()

[function] [call site] 00003


             bssl::Span<unsigned char const>::Span()

[function] [call site] 00004


               bssl::Span<unsigned char const>::Span(unsigned char const*, unsigned long)

[function] [call site] 00005


           bssl::der::Input::Input()

[function] [call site] 00006


           bssl::der::BitString::BitString()

[function] [call site] 00007


             bssl::der::Input::Input()

[function] [call site] 00008


           bssl::ParseCrlCertificateList(bssl::der::Input, bssl::der::Input*, bssl::der::Input*, bssl::der::BitString*)

[function] [call site] 00009


             bssl::der::Parser::Parser(bssl::der::Input)

[function] [call site] 00010


               bssl::der::Input::data() const

[function] [call site] 00011


                 bssl::Span<unsigned char const>::data() const

[function] [call site] 00012


               bssl::der::Input::size() const

[function] [call site] 00013


                 bssl::Span<unsigned char const>::size() const

[function] [call site] 00014


               CBS_init

[function] [call site] 00015


             bssl::der::Parser::Parser()

[function] [call site] 00016


               CBS_init

[function] [call site] 00017


             bssl::der::Parser::ReadSequence(bssl::der::Parser*)

[function] [call site] 00018


               bssl::der::Parser::ReadConstructed(unsigned int, bssl::der::Parser*)

[function] [call site] 00019


                 bssl::der::Input::Input()

[function] [call site] 00020


                 bssl::der::Parser::ReadTag(unsigned int, bssl::der::Input*)

[function] [call site] 00021


                   bssl::der::Input::Input()

[function] [call site] 00022


                   bssl::der::Parser::PeekTagAndValue(unsigned int*, bssl::der::Input*)

[function] [call site] 00023


                     CBS_get_any_asn1_element

[function] [call site] 00024


                       cbs_get_any_asn1_element(cbs_st*, cbs_st*, unsigned int*, unsigned long*, int*, int*, int)

[function] [call site] 00025


                         __assert_fail

[call site] 00026


                         __assert_fail

[call site] 00027


                         parse_asn1_tag(cbs_st*, unsigned int*)

[function] [call site] 00028


                           CBS_get_u8

[function] [call site] 00029


                             cbs_get(cbs_st*, unsigned char const**, unsigned long)

[function] [call site] 00030


                           parse_base128_integer(cbs_st*, unsigned long*)

[function] [call site] 00031


                             CBS_get_u8

[function] [call site] 00032


                         CBS_get_u8

[function] [call site] 00033


                         CBS_len

[function] [call site] 00034


                         CBS_get_bytes

[function] [call site] 00035


                           cbs_get(cbs_st*, unsigned char const**, unsigned long)

[function] [call site] 00036


                           CBS_init

[function] [call site] 00037


                         cbs_get_u(cbs_st*, unsigned long*, unsigned long)

[function] [call site] 00038


                           cbs_get(cbs_st*, unsigned char const**, unsigned long)

[function] [call site] 00039


                         CBS_get_bytes

[function] [call site] 00040


                     CBS_skip

[function] [call site] 00041


                       cbs_get(cbs_st*, unsigned char const**, unsigned long)

[function] [call site] 00042


                     CBS_len

[function] [call site] 00043


                     CBS_data

[function] [call site] 00044


                     CBS_len

[function] [call site] 00045


                     bssl::der::Input::Input(unsigned char const*, unsigned long)

[function] [call site] 00046


                   bssl::der::Parser::Advance()

[function] [call site] 00047


                     CBS_skip

[function] [call site] 00048


                   abort

[call site] 00049


                 bssl::der::Parser::Parser(bssl::der::Input)

[function] [call site] 00050


             bssl::der::Parser::ReadRawTLV(bssl::der::Input*)

[function] [call site] 00051


               CBS_get_any_asn1_element

[function] [call site] 00052


               CBS_data

[function] [call site] 00053


               CBS_len

[function] [call site] 00054


               bssl::der::Input::Input(unsigned char const*, unsigned long)

[function] [call site] 00055


             bssl::der::Parser::ReadRawTLV(bssl::der::Input*)

[function] [call site] 00056


             bssl::der::Parser::ReadBitString()

[function] [call site] 00057


               bssl::der::Input::Input()

[function] [call site] 00058


               bssl::der::Parser::ReadTag(unsigned int, bssl::der::Input*)

[function] [call site] 00059


               bssl::der::ParseBitString(bssl::der::Input)

[function] [call site] 00060


                 bssl::der::ByteReader::ByteReader(bssl::der::Input)

[function] [call site] 00061


                   bssl::Span<unsigned char const>::Span<bssl::der::Input, void, bssl::der::Input>(bssl::der::Input const&)

[function] [call site] 00062


                     bssl::der::Input::data() const

[function] [call site] 00063


                     bssl::der::Input::size() const

[function] [call site] 00064


                 bssl::der::ByteReader::ReadByte(unsigned char*)

[function] [call site] 00065


                   bssl::der::ByteReader::HasMore()

[function] [call site] 00066


                     bssl::Span<unsigned char const>::empty() const

[function] [call site] 00067


                   bssl::Span<unsigned char const>::operator[](unsigned long) const

[function] [call site] 00068


                     abort

[call site] 00069


                   bssl::der::ByteReader::Advance(unsigned long)

[function] [call site] 00070


                     bssl::Span<unsigned char const>::size() const

[function] [call site] 00071


                     abort

[call site] 00072


                     bssl::Span<unsigned char const>::subspan(unsigned long, unsigned long) const

[function] [call site] 00073


                       abort

[call site] 00074


                       bssl::Span<unsigned char const>::Span(unsigned char const*, unsigned long)

[function] [call site] 00075


                 bssl::der::Input::Input()

[function] [call site] 00076


                 bssl::der::ByteReader::BytesLeft() const

[function] [call site] 00077


                   bssl::Span<unsigned char const>::size() const

[function] [call site] 00078


                 bssl::der::ByteReader::ReadBytes(unsigned long, bssl::der::Input*)

[function] [call site] 00079


                   bssl::Span<unsigned char const>::size() const

[function] [call site] 00080


                   bssl::Span<unsigned char const>::first(unsigned long) const

[function] [call site] 00081


                     abort

[call site] 00082


                     bssl::Span<unsigned char const>::Span(unsigned char const*, unsigned long)

[function] [call site] 00083


                   bssl::der::Input::Input(bssl::Span<unsigned char const>)

[function] [call site] 00084


                   bssl::der::ByteReader::Advance(unsigned long)

[function] [call site] 00085


                 bssl::der::Input::empty() const

[function] [call site] 00086


                   bssl::Span<unsigned char const>::empty() const

[function] [call site] 00087


                 bssl::der::Input::back() const

[function] [call site] 00088


                   bssl::Span<unsigned char const>::back() const

[function] [call site] 00089


                     abort

[call site] 00090


                 bssl::der::BitString::BitString(bssl::der::Input, unsigned char)

[function] [call site] 00091


                   abort

[call site] 00092


                   bssl::der::Input::empty() const

[function] [call site] 00093


                   abort

[call site] 00094


                   bssl::der::Input::empty() const

[function] [call site] 00095


                   bssl::der::Input::back() const

[function] [call site] 00096


                   abort

[call site] 00097


             std::__1::optional<bssl::der::BitString>::value[abi:ne180100]() &

[function] [call site] 00098


               std::__1::__optional_storage_base<bssl::der::BitString, false>::__get[abi:ne180100]() &

[function] [call site] 00099


             bssl::der::Parser::HasMore()

[function] [call site] 00100


               CBS_len

[function] [call site] 00101


             bssl::der::Parser::HasMore()

[function] [call site] 00102