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Issue metadata

Status: Duplicate
Merged: issue 799689
Owner:
Closed: Jan 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Regression



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Null-dereference READ in __msan_memcpy

Project Member Reported by ClusterFuzz, Jan 5 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5530995364462592

Fuzzer: libFuzzer_media_pipeline_integration_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x00000000000c
Crash State:
  __msan_memcpy
  media::AudioDecoderConfig::AudioDecoderConfig
  media::FFmpegDemuxerStream::audio_decoder_config
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=518239:518261

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5530995364462592

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Project Member

Comment 1 by ClusterFuzz, Jan 5 2018

Components: Internals>Media
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.
Cc: brajkumar@chromium.org
Labels: -Type-Bug M-64 Test-Predator-Wrong Type-Bug-Regression
Owner: dalecur...@chromium.org
Status: Assigned (was: Untriaged)
Predator and CL could not provide any possible suspects.

Using Code Search for the file, "audio_decoder_config.cc" and observed there was some recent changes for the below file.

Suspect CL: https://chromium.googlesource.com/chromium/src/+/8daddb4163f77edeb8a5fc818007dbe006221762

dalecurtis@ -- Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Thanks!
Mergedinto: 799689
Status: Duplicate (was: Assigned)
Project Member

Comment 4 by ClusterFuzz, Jan 9 2018

ClusterFuzz has detected this issue as fixed in range 527873:527880.

Detailed report: https://clusterfuzz.com/testcase?key=5530995364462592

Fuzzer: libFuzzer_media_pipeline_integration_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x00000000000c
Crash State:
  __msan_memcpy
  media::AudioDecoderConfig::AudioDecoderConfig
  media::FFmpegDemuxerStream::audio_decoder_config
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=518239:518261
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=527873:527880

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5530995364462592

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

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