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Issue metadata

Status: WontFix
Owner:
Closed: May 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Float-cast-overflow in blink::PaintLayerScrollableArea::CornerRect

Project Member Reported by ClusterFuzz, Apr 25 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5737157143298048

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

Crash Type: Float-cast-overflow
Crash Address: 
Crash State:
  blink::PaintLayerScrollableArea::CornerRect
  blink::PaintLayerScrollableArea::ResizerCornerRect
  blink::ScrollingCoordinator::ComputeShouldHandleScrollGestureOnMainThreadRegion
  
Sanitizer: undefined (UBSAN)

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

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5737157143298048

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 25 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, Apr 25 2018

Cc: xidac...@chromium.org orphis@chromium.org
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

Mark video-enter-exit-fullscreen-while-hovering-shows-controls.html timeout by xidachen@chromium.org - https://chromium.googlesource.com/chromium/src/+/7f9a4ddd4e17adce15d7e8e55a4554d7a420d1e3

Introduce a direct dependency Blink -> WebRTC by orphis@chromium.org - https://chromium.googlesource.com/chromium/src/+/254b97d5a6edc67def94977f747c4472182a867b

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs 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 4 by ClusterFuzz, May 2 2018

Labels: Needs-Feedback
ClusterFuzz testcase 5737157143298048 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: Available (was: WontFix)
CFI is looking at the wrong CL.
schenney@: could you triage this?
Status: WontFIx (was: Available)
ClsuterFuzz for some reason is ignoring the ClusterFuzz-Ignore label. This is not one we will fix.
Project Member

Comment 7 by ClusterFuzz, Aug 31

ClusterFuzz has detected this issue as fixed in range 587601:587602.

Detailed report: https://clusterfuzz.com/testcase?key=5737157143298048

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

Crash Type: Float-cast-overflow
Crash Address: 
Crash State:
  blink::PaintLayerScrollableArea::CornerRect
  blink::PaintLayerScrollableArea::ResizerCornerRect
  blink::ScrollingCoordinator::ComputeShouldHandleScrollGestureOnMainThreadRegion
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=552707:552711
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=587601:587602

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5737157143298048

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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