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35974: jsoup:XmlFuzzer: Timeout in XmlFuzzer #1578

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jhy opened this issue Jul 11, 2021 · 2 comments
Closed

35974: jsoup:XmlFuzzer: Timeout in XmlFuzzer #1578

jhy opened this issue Jul 11, 2021 · 2 comments
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fixed fuzz An issue found by the OSS Fuzz project
Milestone
1.14.2

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jhy commented Jul 11, 2021

Detailed Report: https://oss-fuzz.com/testcase?key=4659922406080512

Project: jsoup
Fuzzing Engine: libFuzzer
Fuzz Target: XmlFuzzer
Job Type: libfuzzer_asan_jsoup
Platform Id: linux

Crash Type: Timeout (exceeds 60 secs)
Crash Address:
Crash State:
XmlFuzzer

Sanitizer: address (ASAN)

Crash Revision: https://oss-fuzz.com/revisions?job=libfuzzer_asan_jsoup&revision=202107070611

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=4659922406080512

Issue filed automatically.
@jhy jhy added fuzz An issue found by the OSS Fuzz project duplicate This is a duplicate issue or root-cause of another issue labels Jul 11, 2021
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jhy commented Jul 11, 2021

Dupe rootcause as #1580

@jhy jhy closed this as completed Jul 11, 2021
@jhy jhy removed the duplicate This is a duplicate issue or root-cause of another issue label Jul 13, 2021
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jhy commented Jul 14, 2021

Still firing - I see the fuzzer is timing out in 60 seconds, but I can run 500 iters of the same data in 10 seconds. So possibly an anemic CPU. In profiling, see that adding 38K attributes is causing overhead and far out of bounds of reality, so will cap it.

jhy added a commit that referenced this issue Jul 14, 2021
@jhy
Perf: limit attribute count per element to 512
1f0b68f 
Prevents runaway situations

Should improve #1578
@jhy jhy added the fixed label Sep 6, 2021
@jhy jhy added this to the 1.14.2 milestone Sep 6, 2021
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fixed fuzz An issue found by the OSS Fuzz project
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1.14.2
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