[Webkit-unassigned] [Bug 81574] New: ASSERTION FAILED: !m_suspended causing "crashes" on Lion Intel Debug WebKit2 testers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=81574

           Summary: ASSERTION FAILED: !m_suspended causing "crashes" on
                    Lion Intel Debug WebKit2 testers
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
               URL: http://build.webkit.org/results/Lion%20Intel%20Debug%2
                    0(WebKit2%20Tests)/r111233%20(5050)/fullscreen/full-sc
                    reen-twice-crash-log.txt
        OS/Version: Unspecified
            Status: NEW
          Keywords: LayoutTestFailure, MakingBotsRed, NeedsRadar,
                    Regression
          Severity: Normal
          Priority: P2
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jberlin at webkit.org
                CC: beidson at apple.com, webkit-bug-importer at group.apple.com


void SuspendableTimer::suspend(ReasonForSuspension)
{
#if !ASSERT_DISABLED
    ASSERT(!m_suspended);
    m_suspended = true;
#endif
    m_active = isActive();
    if (m_active) {
        m_nextFireInterval = nextFireInterval();
        m_repeatInterval = repeatInterval();
        TimerBase::stop();
    }
}

Unfortunately, I don't know when this started due to the state of our tests. I also cannot reproduce this locally, and it doesn't always show up on the bots (see http://build.webkit.org/results/Lion%20Intel%20Debug%20(WebKit2%20Tests)/r111245%20(5052)/results.html where it didn't happen and http://build.webkit.org/results/Lion%20Intel%20Debug%20(WebKit2%20Tests)/r111254%20(5053)/results.html where it did.

NRWT is not good at correctly associating crash logs with the tests that crashed. However, I have a suspicion that it is happening while running fast/loader/stateobjects/document-destroyed-navigate-back.html, since the backtrace is about a JS alert, and fast/loader/stateobjects/document-destroyed-navigate-back.html    is the only one of the tests that crashed in http://build.webkit.org/results/Lion%20Intel%20Debug%20(WebKit2%20Tests)/r111233%20(5050)/results.html that uses JS alerts.

http://build.webkit.org/results/Lion%20Intel%20Debug%20(WebKit2%20Tests)/r111233%20(5050)/fullscreen/full-screen-twice-crash-log.txt

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