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Issue 836711 link

Starred by 2 users

Issue metadata

Status: WontFix
Owner: ----
Closed: Jul 9
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 3
Type: Bug



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Float-cast-overflow in clampTo

Project Member Reported by ClusterFuzz, Apr 25 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5190384452632576

Fuzzer: inferno_twister
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Float-cast-overflow
Crash Address: 
Crash State:
  clampTo
  clampTo
  clampTo<int,
  
Sanitizer: undefined (UBSAN)

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

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5190384452632576

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 25 2018

Components: Blink>Internals>WTF
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

Labels: Test-Predator-Auto-Owner
Owner: orphis@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/254b97d5a6edc67def94977f747c4472182a867b (Introduce a direct dependency Blink -> WebRTC).

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.

Comment 3 by yutak@chromium.org, Apr 25 2018

Cc: yutak@chromium.org orphis@chromium.org
Components: -Blink>Internals>WTF Blink>Layout Blink>Editing>Selection
Labels: Test-Predator-Wrong-CLs Test-Predator-Wrong-Components
Owner: ----
Status: Untriaged (was: Assigned)
Seems like Selection/Layout code somehow produces -nan.
(Can NaN be negative? Really?)

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

Owner: e...@chromium.org
Status: Assigned (was: Untriaged)
Yeah this looks really odd, we shouldn't be producing -NaN.

Comment 5 by yosin@chromium.org, May 28 2018

Components: -Blink>Editing>Selection
Remove Blink>Editing>Selection since this is cause by huge number of values
in layout calculation.

CSS values in sample HTML are:
 - letter-spacing: infinity
 - border-width-left: 18446744073709551503 (20 digits)

Comment 6 by e...@chromium.org, Jun 28 2018

Status: Available (was: Assigned)
Labels: -Pri-2 Pri-3
Owner: ----
Status: WontFix (was: Available)
Project Member

Comment 9 by ClusterFuzz, Jul 16

Labels: Needs-Feedback
ClusterFuzz testcase 5190384452632576 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.
 Issue 866430  has been merged into this issue.

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