787726 - Assertion failure: mDocument->IsXUL() || mDocument->GetReadyStateEnum() == nsIDocument::READYSTATE_INTERACTIVE || (mDocument->GetReadyStateEnum() == nsIDocument::READYSTATE_UNINITIALIZED && NS_IsAboutBlank(mDocument->GetDocumentURI())) (Bad readystate), a

Status: RESOLVED DUPLICATE of bug 779959

(Core :: DOM: Navigation, defect)

Description

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

I hit the following fatal assertion while browsing, causing my browser to crash:

Assertion failure: mDocument->IsXUL() || mDocument->GetReadyStateEnum() == nsIDocument::READYSTATE_INTERACTIVE || (mDocument->GetReadyStateEnum() == nsIDocument::READYSTATE_UNINITIALIZED && NS_IsAboutBlank(mDocument->GetDocumentURI())) (Bad readystate), at /home/dbaron/builds/ssd/mozilla-central/mozilla/layout/base/nsDocumentViewer.cpp:1017

When I hit the assertion, I was looking at the links to flights I've taken at the bottom of http://dbaron.org/about -- I was clicking some of the links and going back repeatedly.  (What was saved in my sessionstore after the assertion was that the tab had the 2011 flights loaded.)

(gdb) bt 8
#0  0x00007fd8001c103d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007fd8001c0edc in __sleep (seconds=0)
    at ../sysdeps/unix/sysv/linux/sleep.c:138
#2  0x00007fd7fbc9c1bc in ah_crap_handler (signum=11)
    at /home/dbaron/builds/ssd/mozilla-central/mozilla/toolkit/xre/nsSigHandlers.cpp:89
#3  0x00007fd7fbca88db in nsProfileLock::FatalSignalHandler (signo=11, 
    info=0x7fff73525c30, context=0x7fff73525b00)
    at /home/dbaron/builds/ssd/mozilla-central/obj/firefox-debugopt/toolkit/profile/nsProfileLock.cpp:190
#4  <signal handler called>
#5  0x00007fd7fc0092f9 in DocumentViewerImpl::LoadComplete (this=0x12971840, 
    aStatus=<optimized out>)
    at /home/dbaron/builds/ssd/mozilla-central/mozilla/layout/base/nsDocumentViewer.cpp:1009
#6  0x00007fd7fcffa77b in nsDocShell::EndPageLoad (this=0x3db86450, aChannel=
    0x47d99748, aStatus=0, aProgress=<optimized out>)
    at /home/dbaron/builds/ssd/mozilla-central/mozilla/docshell/base/nsDocShell.cpp:6422
#7  0x00007fd7fcffcb07 in nsDocShell::OnStateChange (this=0x3db86450, 
    aProgress=0x3db86478, aRequest=0x47d99748, aStateFlags=<optimized out>, 
    aStatus=0)
    at /home/dbaron/builds/ssd/mozilla-central/mozilla/docshell/base/nsDocShell.cpp:6253
(More stack frames follow...)
(gdb) f 5
#5  0x00007fd7fc0092f9 in DocumentViewerImpl::LoadComplete (this=0x12971840, 
    aStatus=<optimized out>)
    at /home/dbaron/builds/ssd/mozilla-central/mozilla/layout/base/nsDocumentViewer.cpp:1009
warning: Source file is more recent than executable.
1009	      MOZ_ASSERT(mDocument->IsXUL() || // readyState for XUL is bogus
(gdb) l
1004	    nsIDocShell *docShell = window->GetDocShell();
1005	    NS_ENSURE_TRUE(docShell, NS_ERROR_UNEXPECTED);
1006	
1007	    docShell->GetRestoringDocument(&restoring);
1008	    if (!restoring) {
1009	      MOZ_ASSERT(mDocument->IsXUL() || // readyState for XUL is bogus
1010	                 mDocument->GetReadyStateEnum() ==
1011	                   nsIDocument::READYSTATE_INTERACTIVE ||
1012	                 // test_stricttransportsecurity.html has old-style
1013	                 // docshell-generated about:blank docs reach this code!
(gdb) l
1014	                 (mDocument->GetReadyStateEnum() ==
1015	                    nsIDocument::READYSTATE_UNINITIALIZED &&
1016	                  NS_IsAboutBlank(mDocument->GetDocumentURI())),
1017	                 "Bad readystate");
1018	      mDocument->SetReadyStateInternal(nsIDocument::READYSTATE_COMPLETE);
1019	
1020	      nsRefPtr<nsDOMNavigationTiming> timing(mDocument->GetNavigationTiming());
1021	      if (timing) {
1022	        timing->NotifyLoadEventStart();
1023	      }
(gdb) p mDocument
$1 = {
  mRawPtr = 0x426957e0
}
(gdb) p $1.mRawPtr
$2 = (nsHTMLDocument *) 0x426957e0
(gdb) p $2->GetReadyStateEnum()
$3 = nsIDocument::READYSTATE_COMPLETE
(gdb) p mDocument->mDocumentURI
$4 = {
  mRawPtr = 0x11e1a690
}
(gdb) p $.mRawPtr
$5 = (nsStandardURL *) 0x11e1a690
(gdb) p $->mSpec
$6 = {
  <nsACString_internal> = {
    mData = 0x3c548448 "http://dbaron.org/about", 
    mLength = 23, 
    mFlags = 5
  }, <No data fields>}




This assertion was introduced relatively recently in https://hg.mozilla.org/mozilla-central/rev/fa6a84e7ba53

Comment 1

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

Oops, looks like this might be a duplicate of bug 779959.