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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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Integer-overflow in blink::LayoutFrameSet::UpdateLayout

Project Member Reported by ClusterFuzz, Apr 25 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6202239690211328

Fuzzer: inferno_twister
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  blink::LayoutFrameSet::UpdateLayout
  blink::LayoutFrameSet::PositionFrames
  blink::LayoutFrameSet::UpdateLayout
  
Sanitizer: undefined (UBSAN)

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

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6202239690211328

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 25 2018

Components: Blink>Layout
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.
Cc: pnangunoori@chromium.org
Labels: M-66 Test-Predator-Wrong
Owner: sugoi@chromium.org
Status: Assigned (was: Untriaged)
Unable to provide possible suspect using Predator, CL and Code Search.

sugoi@ -- Could you please look into this issue as the crash data from the test case of the   Issue 823031   seems to be similar to the issue.

Thanks!

Comment 3 by sugoi@chromium.org, Apr 27 2018

Owner: e...@chromium.org
The issue is an integer overflow in blink. Nothing to do with SwiftShader.
Assigning to eae@, who's the last person to have touched code in that area, so he can assign it to the proper person.

Comment 4 by e...@chromium.org, May 2 2018

Status: WontFix (was: Assigned)
Must int overflows in blink are considered WontFix, this one included. Closing.

Comment 5 by e...@chromium.org, May 2 2018

Cc: e...@chromium.org ifratric@google.com
 Issue 836492  has been merged into this issue.
Project Member

Comment 6 by ClusterFuzz, May 9 2018

Labels: Needs-Feedback
ClusterFuzz testcase 5715203283746816 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.

Comment 7 by e...@chromium.org, May 9 2018

Labels: ClusterFuzz-Ignore
 Issue 851471  has been merged into this issue.
Project Member

Comment 9 by ClusterFuzz, Jun 14 2018

ClusterFuzz has detected this issue as fixed in range 567089:567097.

Detailed report: https://clusterfuzz.com/testcase?key=6202239690211328

Fuzzer: inferno_twister
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  blink::LayoutFrameSet::UpdateLayout
  blink::LayoutFrameSet::PositionFrames
  blink::LayoutFrameSet::UpdateLayout
  
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=567089:567097

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6202239690211328

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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