Closed Bug 791798 Opened 9 years ago Closed 9 years ago
crash in mozilla::plugins::parent::_releaseobject
This bug was filed from the Socorro interface and is report bp-8fa54c97-2086-4e19-a9c4-15b622120917 . ============================================================= Seen while looking at Aurora crash stats. https://crash-stats.mozilla.com/report/list?signature=mozilla::plugins::parent::_releaseobject%28NPObject*%29 The crash has been around in smaller numbers in earlier versions but has increased in Aurora. Unfortunately we are not catching the flash version that may be involved. Frame Module Signature Source 0 xul.dll mozilla::plugins::parent::_releaseobject dom/plugins/base/nsNPAPIPlugin.cpp:1460 1 xul.dll DelayedReleaseGCCallback dom/plugins/base/nsJSNPRuntime.cpp:213 2 xul.dll XPCJSRuntime::GCCallback js/xpconnect/src/XPCJSRuntime.cpp:727 3 mozjs.dll Collect js/src/jsgc.cpp:4505 4 mozjs.dll js::GCSlice js/src/jsgc.cpp:4538 5 mozjs.dll js::NotifyDidPaint js/src/jsfriendapi.cpp:838 6 xul.dll mozilla::layers::LayerManagerOGL::EndEmptyTransaction gfx/layers/opengl/LayerManagerOGL.cpp:393 7 xul.dll nsXPConnect::NotifyDidPaint js/xpconnect/src/nsXPConnect.cpp:2754 8 xul.dll PresShell::Paint layout/base/nsPresShell.cpp:5293 9 xul.dll nsViewManager::Refresh view/src/nsViewManager.cpp:369 10 xul.dll nsViewManager::PaintWindow view/src/nsViewManager.cpp:709 11 xul.dll nsView::PaintWindow view/src/nsView.cpp:1034 12 xul.dll nsWindow::OnPaint widget/windows/nsWindowGfx.cpp:534
This is probably related to bug 790826.
It first appeared in 17.0a1/20120730. The regression range is: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=29bff59d3bbe&tochange=36c30260e7fa It might be a regression from bug 744121.
OS: Windows NT → Windows 7
according to the signature summary I see a crash on each of the 2012082804 and 2012082903 builds; nothing in the regression range from comment 2 looks remotely suspicious. I suspect that http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=8af6a22827ec&tochange=8af2ff9c6018 or even a day earlier is more likely, and that this is likely a GC hazard somewhere in the plugin code, so we should be looking at both the JS/GC pushes as well as plugin pushes.
Depends on: 790826
It's #28 top browser crasher in 17.0a2 and #89 in 18.0a1.
(In reply to Benjamin Smedberg [:bsmedberg] from comment #3) > so we should be looking at both the JS/GC pushes as well as > plugin pushes. Tracking for FF17 and CC'ing some JS folks. Also starting this bug off with you bsmedberg.
This is currently at #25 in 17 topcrashers, could rise more once we're on Beta -- Benjamin have you had a chance to look into this more?
gfritzsche found this while working on something else, and I'm going to mark r+ here before checking it in! Woot.
Attachment #670095 - Flags: review+
Comment on attachment 670095 [details] [diff] [review] Keep sDelayedReleases safe, rev. 1 Crashes disappeared on 12-Oct for nightly builds, woot. [Approval Request Comment] Bug caused by (feature/regressing bug #): Not sure, probably incremental GC. User impact if declined: More crashes Testing completed (on m-c, etc.): on nightly for a weekend, verified fix via crash-stats and some manual testing Risk to taking this patch (and alternatives if risky): This patch appears quite safe to me; it's the equivalent of a null-check. The only real risk is a performance loss due to enumerating sDelayedReleases, but that shouldn't be a big array usually. String or UUID changes made by this patch: none
Comment on attachment 670095 [details] [diff] [review] Keep sDelayedReleases safe, rev. 1 Getting this landed early should give us time to gather feedback if there is any performance issue requiring this to be backed out.
Scoobidiver, would you mind verifying if this is fixed for Firefox 17 and 18 as well? Thanks.
(In reply to Anthony Hughes, Mozilla QA (:ashughes) from comment #14) > Scoobidiver, would you mind verifying if this is fixed for Firefox 17 and 18 > as well? Thanks. There are no crashes in 17.0b2 and above and after 18.0a2/20121015.
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