It's currently #21 top crasher in the first build of 13.0a1. The regression range is: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=3f26b7bee352&tochange=e18c7bc2c28e It's likely caused by bug 90268. Signature nsCOMPtr_base::assign_assuming_AddRef(nsISupports*) | nsObjectFrame::PrepForDrawing(nsIWidget*) More Reports Search UUID 2d083f0f-8656-49e4-82cb-e78592120202 Date Processed 2012-02-02 11:39:51 Uptime 6723 Install Age 1.9 hours since version was first installed. Install Time 2012-02-02 09:47:10 Product Firefox Version 13.0a1 Build ID 20120201031146 Release Channel nightly OS Windows NT OS Version 6.0.6002 Service Pack 2 Build Architecture amd64 Build Architecture Info family 6 model 30 stepping 5 Crash Reason EXCEPTION_ACCESS_VIOLATION_READ Crash Address 0xffffffffffffffff App Notes AdapterVendorID: 0x10de, AdapterDeviceID: 0x0603, AdapterSubsysID: 1058174b, AdapterDriverVersion: 8.15.11.8637 D3D10 Layers? D3D10 Layers- D3D9 Layers? D3D9 Layers- WebGL? WebGL- EMCheckCompatibility True Frame Module Signature [Expand] Source 0 xul.dll nsCOMPtr_base::assign_assuming_AddRef 1 xul.dll nsObjectFrame::PrepForDrawing layout/generic/nsObjectFrame.cpp:389 2 xul.dll nsRefPtr<nsPresContext>::~nsRefPtr<nsPresContext> obj-firefox/dist/include/nsAutoPtr.h:907 3 xul.dll nsComponentManagerImpl::GetServiceByContractID xpcom/components/nsComponentManager.cpp:1410 4 xul.dll nsPluginInstanceOwner::CreateWidget dom/plugins/base/nsPluginInstanceOwner.cpp:3317 5 xul.dll nsPluginHost::SetUpPluginInstance dom/plugins/base/nsPluginHost.cpp:1225 6 xul.dll ns_if_addref<nsListScrollSmoother*> obj-firefox/dist/include/nsISupportsUtils.h:94 7 xul.dll nsACString_internal::Replace obj-firefox/dist/include/nsTSubstring.h:378 8 xul.dll nsPluginInstanceOwner::GetInstance dom/plugins/base/nsPluginInstanceOwner.cpp:495 9 xul.dll nsPluginHost::InstantiateEmbeddedPlugin dom/plugins/base/nsPluginHost.cpp:1096 10 xul.dll SearchTable obj-firefox/xpcom/build/pldhash.cpp:472 11 xul.dll nsPrefBranch::RemoveObserver modules/libpref/src/nsPrefBranch.cpp:639 12 xul.dll nsComponentManagerImpl::GetService xpcom/components/nsComponentManager.cpp:1215 13 xul.dll nsACString_internal::MutatePrep xpcom/string/src/nsTSubstring.cpp:162 14 xul.dll nsCOMPtr_base::assign_from_qi obj-firefox/xpcom/build/nsCOMPtr.cpp:96 15 xul.dll nsObjectLoadingContent::InstantiatePluginInstance content/base/src/nsObjectLoadingContent.cpp:637 16 xul.dll nsPluginStreamListenerPeer::OnStartRequest dom/plugins/base/nsPluginStreamListenerPeer.cpp:640 17 xul.dll nsCOMPtr_base::assign_from_gs_contractid obj-firefox/xpcom/build/nsCOMPtr.cpp:134 18 xul.dll nsRefPtr<nsPresContext>::~nsRefPtr<nsPresContext> obj-firefox/dist/include/nsAutoPtr.h:907 19 xul.dll nsObjectLoadingContent::OnStartRequest content/base/src/nsObjectLoadingContent.cpp:902 More reports at: https://crash-stats.mozilla.com/report/list?signature=nsCOMPtr_base%3A%3Aassign_assuming_AddRef%28nsISupports*%29%20|%20nsObjectFrame%3A%3APrepForDrawing%28nsIWidget*%29

This looks like a dead mObjectFrame in nsPluginInstanceOwner. In light of what we discovered in bug 683059, mObjectFrame gets destroyed before the nsPluginInstanceOwner dtor which is where mObjectFrame is nulled out. So in addition to setting the plugin instance in the object frame to null in Destroy, I think we should be nulling out the object frame as well.

It's now #3 top crasher in 13.0a1. Th only comment says: "This version of Nightly seems to have a little heartburn w/ Intellicast's Flash-powered weather map."

Hey Marcia, can we try and reproduce this?

While I was checking one of the URLs from this signature I crashed in Bug 724812 Comment 1 - wondering if these two signatures are related.

(In reply to Marcia Knous [:marcia] from comment #4) > While I was checking one of the URLs from this signature I crashed in Bug > 724812 Comment 1 - wondering if these two signatures are related. This one is specific to 64-bit builds, so it might be the 64-bit version of bug 724812, assuming Breakpad is not good for 64-bit stacks.

I see 185 crashes across the trunk in the last week. 98% of the crashes are on Win 7. One user comment: it keeps shutting down when ever i set my location. That user has no extensions installed. http://local.msn.com/weather.aspx?q=Bronx-NY&zip=10460

Here are some manual addon correlations: nsCOMPtr_base::assign_assuming_AddRef(nsISupports*) | nsObjectFrame::PrepForDrawing(nsIWidget*)|EXCEPTION_ACCESS_VIOLATION_READ (21 crashes) 10% (2/21) vs. 0% (5/1635) TFToolbarX@torrent-finder (Torrent Finder Toolbar, https://addons.mozilla.org/addon/2755) 10% (2/21) vs. 0% (8/1635) bbrs_002@blabbers.com 19% (4/21) vs. 12% (189/1635) testpilot@labs.mozilla.com (Mozilla Labs - Test Pilot, https://addons.mozilla.org/addon/13661)

Here are some better STR that I just got using the latest nightly on Win 7: 1. Load http://local.msn.com/ten-day.aspx?q=Middletown-CT&eid=21225&zip=06457 2. Select "Find a location" 3. Keep changing the location to different zip codes 4. Eventually after 3-4 times I generate a crash The crash usually happens when I start typing the same of the city in the field.

Actually the crash signatures I am getting match Bug 724812. (In reply to Marcia Knous [:marcia] from comment #8) > Here are some better STR that I just got using the latest nightly on Win 7: > > 1. Load http://local.msn.com/ten-day.aspx?q=Middletown-CT&eid=21225&zip=06457 > 2. Select "Find a location" > 3. Keep changing the location to different zip codes > 4. Eventually after 3-4 times I generate a crash > > The crash usually happens when I start typing the same of the city in the > field.

We have STR, it's a top crash - #9 on the trunk. It's not assigned to anybody.

This might do the trick. Clear out the frame pointer as soon as we know the frame will be destroyed.

try run for fix v1.0 https://tbpl.mozilla.org/?tree=Try&rev=0c4792b1fceb

pushed to mozilla-inbound http://hg.mozilla.org/integration/mozilla-inbound/rev/c8ff0f77a129

Removing qawanted -- the original ask was for a reproducible case which has been found some time ago. We will verify the fix as per our normal schedule -- no need to track any longer with qawanted. Please re-add if there is more we can do.

There is no testcase to reproduce this crash, right?

(In reply to Al Billings [:abillings] from comment #17) > There is no testcase to reproduce this crash, right? My understanding was that comment 9 is the reproducible case. I could be wrong...

I can't reproduce a crash in Firefox 11, pre-fix, with that testcase.

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20100101 Firefox/13.0 (beta 4) Could ot reproduce the crash using steps from comment #8. Also, no crashes with this signature were reported in the last 4 weeks. Is there anything else that can be done before marking this verified for FF13? Thanks!

I think that's good enough Mihaela. Thanks.