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Issue 844886 link

Starred by 2 users

Issue metadata

Status: WontFix
Owner:
Last visit > 30 days ago
Closed: May 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Integer-overflow in PaintComplexOutline

Project Member Reported by ClusterFuzz, May 19 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5744497556979712

Fuzzer: inferno_twister_c
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  PaintComplexOutline
  blink::ObjectPainter::PaintOutline
  blink::InlinePainter::Paint
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=523880:523906

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5744497556979712

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for more information.
 
Project Member

Comment 1 by ClusterFuzz, May 19 2018

Components: Blink>Paint
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, May 19 2018

Labels: Test-Predator-Auto-Owner
Owner: zakerinasab@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/2c863229da24ed1cb180759c9342e7a5125fd6f5 (Add ImageData constructor from StaticBitmapImage).

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.
Labels: ClusterFuzz-Ignore
Status: WontFix (was: Assigned)
Worst case we paint in the wrong place.
Project Member

Comment 4 by ClusterFuzz, May 28 2018

Labels: Needs-Feedback
ClusterFuzz testcase 5744497556979712 is still reproducing on tip-of-tree build (trunk).

If this testcase was not reproducible locally or unworkable, ignore this notification and we will file another bug soon with hopefully a better and workable testcase.

Otherwise, if this is not intended to be fixed (e.g. this is an intentional crash), please add ClusterFuzz-Ignore label to prevent future bug filing with similar crash stacktrace.
Project Member

Comment 5 by ClusterFuzz, Jun 24 2018

ClusterFuzz has detected this issue as fixed in range 569791:569802.

Detailed report: https://clusterfuzz.com/testcase?key=5744497556979712

Fuzzer: inferno_twister_c
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  PaintComplexOutline
  blink::ObjectPainter::PaintOutline
  blink::InlinePainter::Paint
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=523880:523906
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=569791:569802

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5744497556979712

See https://github.com/google/clusterfuzz-tools 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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