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Issue metadata

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



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Float-cast-overflow in blink::LayoutFrameSet::UpdateLayout

Project Member Reported by ClusterFuzz, Jun 21 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4936008114896896

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

Crash Type: Float-cast-overflow
Crash Address: 
Crash State:
  blink::LayoutFrameSet::UpdateLayout
  LayoutIfNeeded
  blink::LayoutMultiColumnSpannerPlaceholder::UpdateLayout
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=563472:563900

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4936008114896896

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jun 21 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.
Project Member

Comment 2 by ClusterFuzz, Jun 21 2018

Cc: r...@igalia.com yosin@chromium.org
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

[LayoutNG] Make Layout{BlockFlow,FlexibleBox}::CreateAnonymous() to take ComputedStyle by yosin@chromium.org - https://chromium.googlesource.com/chromium/src/+/fa5f9c02ecd9b08736acdd5c724503174c2e6a88

[css-contain] Disable size containment for certain elements by rego@igalia.com - https://chromium.googlesource.com/chromium/src/+/cd1672b012e2eef90d0d6c7e227200dbda98fff1

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.

Comment 3 by r...@igalia.com, Jun 25 2018

First, I cannot reproduce the issue. I've built with:
  is_component_build = false
  is_debug = false
  is_ubsan = true
  strip_absolute_paths_from_debug_symbols = true

But I cannot get a trace like the one in clusterfuzz opening the testcase.
Probably I'm missing something.

In any case I don't see any usage of "contain: size" on the testcase,
so on a first sight it shouldn't be related to my change.

Comment 4 by e...@chromium.org, Jun 25 2018

Status: WontFix (was: Untriaged)
Project Member

Comment 5 by ClusterFuzz, Jul 2

Labels: Needs-Feedback
ClusterFuzz testcase 4936008114896896 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.

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