Issue 43449 in oss-fuzz: elfutils:fuzz-dwfl-core: Timeout in fuzz-dwfl-core

Issue 43449 in oss-fuzz: elfutils:fuzz-dwfl-core: Timeout in fuzz-dwfl-core

[ClusterFuzz-External via monorail]

Status: New
Owner: ----
CC: elfut...@sourceware.org, evv...@gmail.com, izzeem@google.com 
Labels: ClusterFuzz Reproducible Engine-libfuzzer OS-Linux Proj-elfutils Reported-2022-01-09
Type: Bug

New issue 43449 by ClusterFuzz-External: elfutils:fuzz-dwfl-core: Timeout in fuzz-dwfl-core
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43449

Detailed Report: https://oss-fuzz.com/testcase?key=6443168390840320

Project: elfutils
Fuzzing Engine: libFuzzer
Fuzz Target: fuzz-dwfl-core
Job Type: libfuzzer_ubsan_elfutils
Platform Id: linux

Crash Type: Timeout (exceeds 60 secs)
Crash Address: 
Crash State:
  fuzz-dwfl-core
  
Sanitizer: undefined (UBSAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_ubsan_elfutils&range=202111300602:202112010612

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=6443168390840320

Issue filed automatically.

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Issue 43449 in oss-fuzz: elfutils:fuzz-dwfl-core: Timeout in fuzz-dwfl-core

[evv… via monorail]

Comment #1 on issue 43449 by evv...@gmail.com: elfutils:fuzz-dwfl-core: Timeout in fuzz-dwfl-core
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43449#c1

As far as I can see it takes the fuzzer about 15 seconds to process this file without ASan so it doesn't seem to be an elfutils issue.

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Issue 43449 in oss-fuzz: elfutils:fuzz-dwfl-core: Timeout in fuzz-dwfl-core

[ClusterFuzz-External via monorail]

Updates:
	Cc: da...@adalogics.com

Comment #2 on issue 43449 by ClusterFuzz-External: elfutils:fuzz-dwfl-core: Timeout in fuzz-dwfl-core
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43449#c2

(No comment was entered for this change.)

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Re: Issue 43449 in oss-fuzz: elfutils:fuzz-dwfl-core: Timeout in fuzz-dwfl-core

[Mark Wielaard]

Hi,

On Wed, Mar 16, 2022 at 05:38:11PM -0700, ClusterFuzz-External via monorail via Elfutils-devel wrote:
> Comment #2 on issue 43449 by ClusterFuzz-External: elfutils:fuzz-dwfl-core: Timeout in fuzz-dwfl-core
> https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43449#c2

As one of the comments on this says "it takes the fuzzer about 15
seconds to process this file without ASan so it doesn't seem to be an
elfutils issue".

15 seconds sounds like a very long time, especially without asan. ASAN
often takes a long time on 64bit arches. I would recommend to only use
it on 32bit targets if possible.

However it isn't clear to me what this "fuzz-dwfl-core" is, where the
source is and how to replicate this.

Cheers,

Mark