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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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Integer-overflow in position_mark

Project Member Reported by ClusterFuzz, Jun 24 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5843419864498176

Fuzzer: inferno_twister
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  position_mark
  position_around_base
  position_cluster
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=569791:569802

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5843419864498176

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jun 24 2018

Components: Blink>Fonts
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: kkaluri@chromium.org behdad@chromium.org
Labels: M-69 Test-Predator-Wrong CF-NeedsTriage
Unable to find actual suspect through code search and also observing no suspected CL's under regression range, hence adding appropriate label and requesting someone from blink->Fonts team to look in to this issue.

CC'ing behdad@ for his work on "b-ot-shape-fallback.cc" file

Thanks!

Comment 3 by e...@chromium.org, Jun 25 2018

Status: WontFix (was: Untriaged)
Project Member

Comment 4 by ClusterFuzz, Jul 2

Labels: Needs-Feedback
ClusterFuzz testcase 5843419864498176 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.
Project Member

Comment 5 by ClusterFuzz, Jul 3

Labels: -Reproducible Unreproducible
ClusterFuzz testcase 5843419864498176 appears to be flaky, updating reproducibility label.
I fixed a bug like this before.  Given that the report doesn't give me a font, it's hard to debug.

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