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Issue 836481 link

Starred by 2 users

Issue metadata

Status: Assigned
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Float-cast-overflow in blink::StrokeData::SetupPaintDashPathEffect

Project Member Reported by ClusterFuzz, Apr 24 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5107653584617472

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Float-cast-overflow
Crash Address: 
Crash State:
  blink::StrokeData::SetupPaintDashPathEffect
  blink::GraphicsContextState::StrokeFlags
  void blink::GraphicsContext::DrawTextPasses<void blink::GraphicsContext::DrawTex
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=552707:552711

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5107653584617472

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 24 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.
Labels: ClusterFuzz-Ignore
Status: WontFix (was: Untriaged)
Overflow in setting up painting operations with very large inputs is generally not a problem.
Project Member

Comment 3 by ClusterFuzz, May 2 2018

Labels: Needs-Feedback
ClusterFuzz testcase 5107653584617472 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.
Owner: schenney@chromium.org
Status: Assigned (was: WontFix)
Assigning a float to an int in an unchecked way. So I should fix it.
 Issue 836491  has been merged into this issue.
Cc: pnangunoori@chromium.org schenney@chromium.org
 Issue 839688  has been merged into this issue.

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