Fuzz introspector: fuzz_decode
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
10 22 pyasn1.codec.streaming.asSeekableStream call site: 00022 pyasn1.codec.streaming.CachingStreamWrapper.__init__
2 12 pyasn1.codec.streaming.isEndOfStream call site: 00012 substrate.read
1 0 EP call site: 00000 pyasn1.codec.ber.decoder.StreamingDecoder.__iter__

Fuzzer calltree

0 ...fuzz_decode.TestOneInput [function] [call site] 00000
1 pyasn1.codec.ber.decoder.StreamingDecoder.__iter__ [function] [call site] 00001
2 pyasn1.codec.ber.decoder.SingleItemDecoder.__init__ [function] [call site] 00002
3 options.get [function] [call site] 00003
3 options.get [function] [call site] 00004
2 pyasn1.codec.ber.decoder.SingleItemDecoder.__init__ [function] [call site] 00005
2 pyasn1.codec.ber.decoder.SingleItemDecoder.__init__ [function] [call site] 00006
2 pyasn1.codec.streaming.isEndOfStream [function] [call site] 00007
3 <builtin>.isinstance [function] [call site] 00008
3 substrate.tell [function] [call site] 00009
3 substrate.seek [function] [call site] 00010
3 substrate.tell [function] [call site] 00011
3 substrate.seek [function] [call site] 00012
3 substrate.read [function] [call site] 00013
3 substrate.seek [function] [call site] 00014
2 <builtin>.isinstance [function] [call site] 00015
1 io.BytesIO [function] [call site] 00016
1 pyasn1.codec.ber.decoder.StreamingDecoder.__init__ [function] [call site] 00017
2 pyasn1.codec.ber.decoder.SingleItemDecoder.__init__ [function] [call site] 00018
2 pyasn1.codec.ber.decoder.SingleItemDecoder.__init__ [function] [call site] 00019
2 pyasn1.codec.ber.decoder.SingleItemDecoder.__init__ [function] [call site] 00020
2 pyasn1.codec.streaming.asSeekableStream [function] [call site] 00021
3 <builtin>.isinstance [function] [call site] 00022
3 <builtin>.isinstance [function] [call site] 00023
3 io.BytesIO [function] [call site] 00024
3 <builtin>.isinstance [function] [call site] 00025
3 io.IOBase.asOctets [function] [call site] 00026
3 io.BytesIO [function] [call site] 00027
3 <builtin>.isinstance [function] [call site] 00028
3 io.BufferedReader [function] [call site] 00029
3 pyasn1.codec.streaming.CachingStreamWrapper.seekable [function] [call site] 00030
3 pyasn1.codec.streaming.CachingStreamWrapper.__init__ [function] [call site] 00031
4 io.BytesIO [function] [call site] 00032
1 <builtin>.str [function] [call site] 00033