[Webkit-unassigned] [Bug 156586] New: Crash in JSC::SlotVisitor::setMarkedAndAppendToMarkStack when using Web Inspector on github.com

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Apr 14 12:03:01 PDT 2016


https://bugs.webkit.org/show_bug.cgi?id=156586

            Bug ID: 156586
           Summary: Crash in
                    JSC::SlotVisitor::setMarkedAndAppendToMarkStack when
                    using Web Inspector on github.com
    Classification: Unclassified
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Macintosh
                OS: OS X 10.11
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aroben at webkit.org

Created attachment 276409
  --> https://bugs.webkit.org/attachment.cgi?id=276409&action=review
crash log

To reproduce:

1. Launch Safari Technology Preview (I'm using Version 9.1.1 (11601.6.15, 11602.1.27))
2. Go to https://github.com
3. Open the Web Inspector
4. Start record a timeline
5. Reload the page
6. Stop recording the timeline

Somewhere in there the web process will crash. Sometimes it's immediately upon opening the Inspector, other times it's when clicking Record, or when finishing the recording. The stack trace always looks basically the same. See attached crash log.

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