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Issue 761941 link

Starred by 1 user
Status: Verified
Owner:
█ jvanverth@chromium.org
Last visit > 30 days ago
Closed: Sep 2017
Cc:
█ bsalomon@chromium.org
enne@chromium.org
senorblanco@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Mac
Pri: 3
Type: Bug



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pobfuzz: GrSmallPathRenderer::SmallPathOp::addBMPathToAtlas -> width integer overflow

Project Member Reported by ClusterFuzz, Sep 5 2017 
Detailed report: https://clusterfuzz.com/testcase?key=6044241448140800

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkIRect::width
  GrSmallPathRenderer::SmallPathOp::addBMPathToAtlas
  GrSmallPathRenderer::SmallPathOp::onPrepareDraws
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=496919:496951

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6044241448140800

Issue filed automatically.

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

Comment 1 by msrchandra@chromium.org, Sep 5 2017

Components: Internals>Skia
Labels: M-63 Test-Predator-Wrong-CLs

Comment 2 by enne@chromium.org, Sep 7 2017

Labels: -M-63

Comment 3 by enne@chromium.org, Sep 7 2017

Cc: senorblanco@chromium.org bsalomon@chromium.org enne@chromium.org
Labels: -Pri-2 OS-Mac Pri-3
Status: Available (was: Untriaged)
Summary: pobfuzz: GrSmallPathRenderer::SmallPathOp::addBMPathToAtlas -> width integer overflow (was: Integer-overflow in SkIRect::width)

Comment 4 by bsalo...@google.com, Sep 8 2017

Owner: jvanverth@chromium.org
Status: Assigned (was: Available)
Project Member

Comment 5 by ClusterFuzz, Sep 15 2017 

ClusterFuzz has detected this issue as fixed in range 502042:502108.

Detailed report: https://clusterfuzz.com/testcase?key=6044241448140800

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkIRect::width
  GrSmallPathRenderer::SmallPathOp::addBMPathToAtlas
  GrSmallPathRenderer::SmallPathOp::onPrepareDraws
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=496919:496951
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=502042:502108

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6044241448140800

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.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 6 by ClusterFuzz, Sep 15 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6044241448140800 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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