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Kotlin Version Support

See original GitHub issue

I have updated a project to a new Kotlin version (1.5.10) and now the fuzzer stops working (tests haven’t been changed):

INFO: Loaded 8562 no-throw method signatures
INFO: libFuzzer ignores flags that start with '--'
INFO: Seed: 4294574280
INFO: Loaded 1 modules   (512 inline 8-bit counters): 512 [0x7f4e83eff010, 0x7f4e83eff210),
INFO: Loaded 1 PC tables (512 PCs): 512 [0x7f4e82afd010,0x7f4e82aff010),
INFO: -max_len is not provided; libFuzzer will not generate inputs larger than 4096 bytes
INFO: New number of inline 8-bit counters: 1024
INFO: New number of inline 8-bit counters: 2048
INFO: New number of inline 8-bit counters: 4096
INFO: New number of inline 8-bit counters: 8192
INFO: New number of inline 8-bit counters: 16384
INFO: New number of inline 8-bit counters: 32768
INFO: New number of inline 8-bit counters: 65536
INFO: A corpus is not provided, starting from an empty corpus
#2	INITED exec/s: 2 rss: 207Mb
ERROR: no interesting inputs were found. Is the code instrumented for coverage? Exiting.

Before (Kotlin 1.4.31):

INFO: Loaded 8562 no-throw method signatures
INFO: Instrumented net.grandcentrix.cellulariot.cellularhub.fuzztests.targets.MessageMustacheSerializerFuzzer (took 153 ms, size +43%)
INFO: libFuzzer ignores flags that start with '--'
INFO: Seed: 1145321598
INFO: Loaded 1 modules   (512 inline 8-bit counters): 512 [0x7fe4fedce010, 0x7fe4fedce210),
INFO: Loaded 1 PC tables (512 PCs): 512 [0x7fe4fd9cc010,0x7fe4fd9ce010),
INFO: -max_len is not provided; libFuzzer will not generate inputs larger than 4096 bytes
INFO: Instrumented net.grandcentrix.cellulariot.cellularhub.utils.serialisation.models.SerialisationContext (took 14 ms, size +25%)
INFO: Instrumented net.grandcentrix.cellulariot.cellularhub.utils.serialisation.models.SerialisationProductDto (took 5 ms, size +37%)
...

Might this be related to Jazzer?

Issue Analytics

State:
Created 2 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

schirrmachercommented, Sep 14, 2021

Thanks for the fast response! I now used gcr.io/oss-fuzz-base/base-builder-jvm as a base image and it works:

OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
INFO: Loaded 8 hooks from com.code_intelligence.jazzer.sanitizers.Deserialization
INFO: Loaded 1 hooks from com.code_intelligence.jazzer.sanitizers.ReflectiveCall
INFO: Loaded 8649 no-throw method signatures
INFO: Instrumented net.grandcentrix.cellulariot.cellularhub.fuzztests.targets.LwAuthorizerFuzzer (took 103 ms, size +13%)

Your changes regarding the Kotlin version seem to work 😃

I will figure out my problem from above, thanks for the advice!

1reaction

fmeumcommented, Sep 13, 2021

@schirrmacher Could you try again using Jazzer built from https://github.com/CodeIntelligenceTesting/jazzer/pull/181?

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