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Issue metadata

Status: Verified
Owner:
Closed: Feb 2018
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Mac
Pri: 1
Type: Bug



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Null-dereference READ in SkColorFilter::makeComposed

Project Member Reported by ClusterFuzz, Feb 20 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6165511738753024

Fuzzer: libFuzzer_skia_image_filter_proto_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  SkColorFilter::makeComposed
  SkComposeColorFilter::CreateProc
  SkReadBuffer::readFlattenable
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=537692:537695

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6165511738753024

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Feb 20 2018

Components: Internals>Skia
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.
Project Member

Comment 2 by ClusterFuzz, Feb 20 2018

Labels: Test-Predator-Auto-Owner
Owner: reed@google.com
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://skia.googlesource.com/skia/+/19d7bd65045e88724ad59a8d7066a9092754c7e4 (hide virtual and rename to onMakeComposed).

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.
Project Member

Comment 3 by ClusterFuzz, Feb 20 2018

Labels: OS-Mac
Project Member

Comment 4 by ClusterFuzz, Feb 21 2018

ClusterFuzz has detected this issue as fixed in range 537779:537782.

Detailed report: https://clusterfuzz.com/testcase?key=6165511738753024

Fuzzer: libFuzzer_skia_image_filter_proto_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  SkColorFilter::makeComposed
  SkComposeColorFilter::CreateProc
  SkReadBuffer::readFlattenable
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=537692:537695
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=537779:537782

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6165511738753024

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.
Project Member

Comment 5 by ClusterFuzz, Feb 21 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6165511738753024 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

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