Fuzz introspector: GeneratorsFuzzer
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
110 0 EP call site: 00000 [com.fasterxml.uuid.impl.UUIDUtil].uuid(String)

Fuzzer calltree

0 [GeneratorsFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider) [function] [call site] 00000
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeInt(int,int) [function] [call site] 00001
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeLong() [function] [call site] 00002
1 [java.util.Random].<init>(long) [function] [call site] 00003
1 [com.fasterxml.uuid.Generators].randomBasedGenerator(java.util.Random) [function] [call site] 00004
1 [com.fasterxml.uuid.impl.RandomBasedGenerator].generate() [function] [call site] 00005
2 [java.util.Random].nextBytes(com.fasterxml.uuid.impl.RandomBasedGenerator) [function] [call site] 00006
2 [com.fasterxml.uuid.impl.RandomBasedGenerator]._toLong(com.fasterxml.uuid.impl.RandomBasedGenerator,int) [function] [call site] 00007
2 [com.fasterxml.uuid.impl.RandomBasedGenerator]._toLong(com.fasterxml.uuid.impl.RandomBasedGenerator,int) [function] [call site] 00008
2 [java.util.Random].nextLong() [function] [call site] 00009
2 [java.util.Random].nextLong() [function] [call site] 00010
2 [com.fasterxml.uuid.impl.UUIDUtil].constructUUID(com.fasterxml.uuid.impl.RandomBasedGenerator,com.fasterxml.uuid.impl.RandomBasedGenerator,com.fasterxml.uuid.impl.RandomBasedGenerator) [function] [call site] 00011
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeLong() [function] [call site] 00012
1 [java.util.Random].<init>(long) [function] [call site] 00013
1 [com.fasterxml.uuid.Generators].timeBasedEpochGenerator(java.util.Random) [function] [call site] 00014
1 [com.fasterxml.uuid.impl.TimeBasedEpochGenerator].generate() [function] [call site] 00015
2 [com.fasterxml.uuid.UUIDClock].currentTimeMillis() [function] [call site] 00016
2 [com.fasterxml.uuid.impl.TimeBasedEpochGenerator].construct(long) [function] [call site] 00017
3 [java.util.concurrent.locks.Lock].lock() [function] [call site] 00018
3 [IllegalStateException].<init>(String) [function] [call site] 00019
3 [java.util.Random].nextBytes(byte[]) [function] [call site] 00020
3 [com.fasterxml.uuid.impl.TimeBasedEpochGenerator]._toShort(byte[],int) [function] [call site] 00021
3 [com.fasterxml.uuid.impl.TimeBasedEpochGenerator]._toLong(byte[],int) [function] [call site] 00022
3 [com.fasterxml.uuid.impl.UUIDUtil].constructUUID(com.fasterxml.uuid.impl.TimeBasedEpochGenerator,com.fasterxml.uuid.impl.TimeBasedEpochGenerator,com.fasterxml.uuid.impl.TimeBasedEpochGenerator) [function] [call site] 00023
3 [java.util.concurrent.locks.Lock].unlock() [function] [call site] 00024
1 [com.fasterxml.uuid.Generators].nameBasedGenerator() [function] [call site] 00025
2 [com.fasterxml.uuid.Generators].nameBasedGenerator(null) [function] [call site] 00026
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00027
1 [com.fasterxml.uuid.impl.NameBasedGenerator].generate(String) [function] [call site] 00028
2 [String].getBytes(java.nio.charset.Charset) [function] [call site] 00029
2 [com.fasterxml.uuid.impl.NameBasedGenerator].generate(com.fasterxml.uuid.impl.NameBasedGenerator) [function] [call site] 00030
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].remainingBytes() [function] [call site] 00031
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeString(int) [function] [call site] 00032
1 [com.fasterxml.uuid.impl.UUIDUtil].uuid(String) [function] [call site] 00033
2 [NullPointerException].<init>() [function] [call site] 00034
2 [String].length() [function] [call site] 00035
2 [NumberFormatException].<init>(String) [function] [call site] 00036
2 [String].charAt(com.fasterxml.uuid.impl.UUIDUtil) [function] [call site] 00037
2 [NumberFormatException].<init>(String) [function] [call site] 00038
2 [String].charAt(com.fasterxml.uuid.impl.UUIDUtil) [function] [call site] 00039
2 [NumberFormatException].<init>(String) [function] [call site] 00040
2 [String].charAt() [function] [call site] 00041
2 [NumberFormatException].<init>(String) [function] [call site] 00042
2 [java.util.UUID].<init>(com.fasterxml.uuid.impl.UUIDUtil,com.fasterxml.uuid.impl.UUIDUtil) [function] [call site] 00043
1 [com.fasterxml.uuid.Generators].nameBasedGenerator(java.util.UUID) [function] [call site] 00044
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00045
1 [com.fasterxml.uuid.impl.NameBasedGenerator].generate(String) [function] [call site] 00046
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].remainingBytes() [function] [call site] 00047
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeString(int) [function] [call site] 00048
1 [com.fasterxml.uuid.impl.UUIDUtil].uuid(String) [function] [call site] 00049
1 [com.fasterxml.uuid.Generators].nameBasedGenerator(java.util.UUID,null) [function] [call site] 00050
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00051
1 [com.fasterxml.uuid.impl.NameBasedGenerator].generate(String) [function] [call site] 00052
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00053
1 [com.fasterxml.uuid.EthernetAddress].<init>(String) [function] [call site] 00054
2 [String].toCharArray() [function] [call site] 00055
2 [String].length() [function] [call site] 00056
2 [NumberFormatException].<init>(String) [function] [call site] 00057
2 [String].charAt(com.fasterxml.uuid.EthernetAddress) [function] [call site] 00058
2 [NumberFormatException].<init>(String) [function] [call site] 00059
2 [String].charAt(com.fasterxml.uuid.EthernetAddress) [function] [call site] 00060
2 [NumberFormatException].<init>(String) [function] [call site] 00061
2 [String].charAt(com.fasterxml.uuid.EthernetAddress) [function] [call site] 00062
2 [NumberFormatException].<init>(String) [function] [call site] 00063
2 [NumberFormatException].<init>(String) [function] [call site] 00064
1 [com.fasterxml.uuid.Generators].timeBasedGenerator(com.fasterxml.uuid.EthernetAddress) [function] [call site] 00065
2 [com.fasterxml.uuid.Generators].timeBasedGenerator(com.fasterxml.uuid.EthernetAddress,com.fasterxml.uuid.UUIDTimer) [function] [call site] 00066
3 [com.fasterxml.uuid.Generators].sharedTimer() [function] [call site] 00067
4 [java.util.Random].<init>(com.fasterxml.uuid.Generators) [function] [call site] 00068
4 [com.fasterxml.uuid.UUIDTimer].<init>(java.util.Random,null) [function] [call site] 00069
4 [IllegalArgumentException].<init>(String,com.fasterxml.uuid.Generators) [function] [call site] 00070
3 [com.fasterxml.uuid.impl.TimeBasedGenerator].<init>(com.fasterxml.uuid.EthernetAddress,com.fasterxml.uuid.UUIDTimer) [function] [call site] 00071
4 [com.fasterxml.uuid.EthernetAddress].constructMulticastAddress() [function] [call site] 00072
5 [com.fasterxml.uuid.EthernetAddress]._randomNumberGenerator() [function] [call site] 00073
6 [java.security.SecureRandom].<init>() [function] [call site] 00074
5 [com.fasterxml.uuid.EthernetAddress].constructMulticastAddress(java.util.Random) [function] [call site] 00075
6 [java.util.Random].nextBytes(com.fasterxml.uuid.EthernetAddress) [function] [call site] 00076
6 [com.fasterxml.uuid.EthernetAddress].<init>(com.fasterxml.uuid.EthernetAddress) [function] [call site] 00077
4 [com.fasterxml.uuid.EthernetAddress].toByteArray(com.fasterxml.uuid.impl.TimeBasedGenerator,int) [function] [call site] 00078
4 [com.fasterxml.uuid.UUIDTimer].getClockSequence() [function] [call site] 00079
4 [com.fasterxml.uuid.impl.UUIDUtil].gatherLong(com.fasterxml.uuid.impl.TimeBasedGenerator,int) [function] [call site] 00080
4 [com.fasterxml.uuid.impl.UUIDUtil].initUUIDSecondLong(long) [function] [call site] 00081
1 [com.fasterxml.uuid.impl.TimeBasedGenerator].generate() [function] [call site] 00082
2 [com.fasterxml.uuid.UUIDTimer].getTimestamp() [function] [call site] 00083
3 [com.fasterxml.uuid.UUIDClock].currentTimeMillis() [function] [call site] 00084
3 [com.fasterxml.uuid.impl.LoggerFacade].warn(String,long,long) [function] [call site] 00085
3 [com.fasterxml.uuid.impl.LoggerFacade].warn(String) [function] [call site] 00086
4 [com.fasterxml.uuid.impl.LoggerFacade]._warn(String) [function] [call site] 00087
5 [com.fasterxml.uuid.impl.LoggerFacade].warn(String) [function] [call site] 00088
3 [com.fasterxml.uuid.UUIDTimer].initCounters(Random) [function] [call site] 00089
4 [Random].nextInt() [function] [call site] 00090
3 [com.fasterxml.uuid.UUIDTimer].slowDown(com.fasterxml.uuid.UUIDTimer,com.fasterxml.uuid.UUIDTimer) [function] [call site] 00091
3 [com.fasterxml.uuid.TimestampSynchronizer].update(com.fasterxml.uuid.UUIDTimer) [function] [call site] 00092
3 [RuntimeException].<init>(String) [function] [call site] 00093
2 [com.fasterxml.uuid.impl.TimeBasedGenerator].construct(long) [function] [call site] 00094
3 [java.util.UUID].<init>(com.fasterxml.uuid.impl.TimeBasedGenerator,long) [function] [call site] 00095
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00096
1 [com.fasterxml.uuid.EthernetAddress].<init>(String) [function] [call site] 00097
1 [com.fasterxml.uuid.Generators].timeBasedReorderedGenerator(com.fasterxml.uuid.EthernetAddress) [function] [call site] 00098
2 [com.fasterxml.uuid.Generators].timeBasedReorderedGenerator(com.fasterxml.uuid.EthernetAddress,com.fasterxml.uuid.UUIDTimer) [function] [call site] 00099
3 [com.fasterxml.uuid.Generators].sharedTimer() [function] [call site] 00100
3 [com.fasterxml.uuid.impl.TimeBasedReorderedGenerator].<init>(com.fasterxml.uuid.EthernetAddress,com.fasterxml.uuid.UUIDTimer) [function] [call site] 00101
4 [com.fasterxml.uuid.EthernetAddress].constructMulticastAddress() [function] [call site] 00102
4 [com.fasterxml.uuid.EthernetAddress].toByteArray(com.fasterxml.uuid.impl.TimeBasedReorderedGenerator,int) [function] [call site] 00103
4 [com.fasterxml.uuid.UUIDTimer].getClockSequence() [function] [call site] 00104
4 [com.fasterxml.uuid.impl.UUIDUtil].gatherLong(com.fasterxml.uuid.impl.TimeBasedReorderedGenerator,int) [function] [call site] 00105
4 [com.fasterxml.uuid.impl.UUIDUtil].initUUIDSecondLong(long) [function] [call site] 00106
1 [com.fasterxml.uuid.impl.TimeBasedReorderedGenerator].generate() [function] [call site] 00107
2 [com.fasterxml.uuid.UUIDTimer].getTimestamp() [function] [call site] 00108
2 [com.fasterxml.uuid.impl.TimeBasedReorderedGenerator].construct(long) [function] [call site] 00109
3 [java.util.UUID].<init>(com.fasterxml.uuid.impl.TimeBasedReorderedGenerator,long) [function] [call site] 00110