Bug 167738 – [Crash] com.apple.WebKit.WebContent at WebKit: WebKit::WebPage::fromCorePage()

• Component: WebCore Misc.
• Status: RESOLVED FIXED

[Chris Dumez]

com.apple.WebKit.WebContent at WebKit: WebKit::WebPage::fromCorePage():
Thread[0]
[  0] 0x00000001917fddc8 WebKit`WebKit::WebPage::fromCorePage(WebCore::Page*) [inlined] WebCore::Chrome::client() at Chrome.h:69:37
[  0] 0x00000001917fddc8 WebKit`WebKit::WebPage::fromCorePage(WebCore::Page*) + 4 at WebPage.cpp:1363
[  1] 0x00000001917cadef WebKit`WebKit::WebFrameLoaderClient::detachedFromParent2() + 27 at WebFrameLoaderClient.cpp:142:33
[  2] 0x000000018c98c5c7 WebCore`WebCore::FrameLoader::detachViewsAndDocumentLoader() + 31 at FrameLoader.cpp:2552:14
[  3] 0x000000018c986953 WebCore`WebCore::CachedFrame::destroy() + 59 at CachedFrame.cpp:243:34
[  4] 0x000000018c98698b WebCore`WebCore::CachedFrame::destroy() + 115 at CachedFrame.cpp:248:27
[  5] 0x000000018c9868eb WebCore`WebCore::CachedPage::~CachedPage() [inlined] WebCore::CachedPage::~CachedPage() + 11 at CachedPage.cpp:68:28
[  5] 0x000000018c9868e0 WebCore`WebCore::CachedPage::~CachedPage() + 16 at CachedPage.cpp:62
[  6] 0x000000018d48dc9b WebCore`WebCore::PageCache::prune(WebCore::PruningReason) [inlined] std::__1::default_delete<WebCore::CachedPage>::operator()(WebCore::CachedPage*) const + 7 at memory:2537:13
[  6] 0x000000018d48dc94 WebCore`WebCore::PageCache::prune(WebCore::PruningReason) [inlined] std::__1::unique_ptr<WebCore::CachedPage, std::__1::default_delete<WebCore::CachedPage> >::reset(WebCore::CachedPage*) + 12 at memory:2736
[  6] 0x000000018d48dc88 WebCore`WebCore::PageCache::prune(WebCore::PruningReason) [inlined] std::__1::unique_ptr<WebCore::CachedPage, std::__1::default_delete<WebCore::CachedPage> >::operator=(std::nullptr_t) at memory:2708
[  6] 0x000000018d48dc88 WebCore`WebCore::PageCache::prune(WebCore::PruningReason) + 68 at PageCache.cpp:474
[  7] 0x000000018d48dc33 WebCore`WebCore::PageCache::pruneToSizeNow(unsigned int, WebCore::PruningReason) + 31 at PageCache.cpp:295:5
[  8] 0x000000018d45754f WebCore`WebCore::releaseMemory(WebCore::Critical, WebCore::Synchronous) [inlined] WebCore::releaseCriticalMemory(WebCore::Synchronous) + 43 at MemoryRelease.cpp:69:28
[  8] 0x000000018d457524 WebCore`WebCore::releaseMemory(WebCore::Critical, WebCore::Synchronous) + 52 at MemoryRelease.cpp:108
[  9] 0x000000018d456db7 WebCore`WebCore::MemoryPressureHandler::releaseMemory(WebCore::Critical, WebCore::Synchronous) [inlined] std::__1::function<void (WebCore::Critical, WebCore::Synchronous)>::operator()(WebCore::Critical, WebCore::Synchronous) const + 23 at functional:1817:12
[  9] 0x000000018d456da0 WebCore`WebCore::MemoryPressureHandler::releaseMemory(WebCore::Critical, WebCore::Synchronous) + 76 at MemoryPressureHandler.cpp:65
[ 10] 0x0000000191886117 WebKit`WebKit::WebProcess::actualPrepareToSuspend(WebKit::WebProcess::ShouldAcknowledgeWhenReadyToSuspend) + 63 at WebProcess.cpp:1289:44
[ 11] 0x0000000191886603 WebKit`WebKit::WebProcess::prepareToSuspend() + 159 at WebProcess.cpp:1322:5
[ 12] 0x00000001916ba967 WebKit`IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) [inlined] IPC::Connection::dispatchMessage(IPC::Decoder&) + 19 at Connection.cpp:897:14

[Chris Dumez]

<rdar://problem/30229990>

[Chris Dumez]

Created attachment 300415 [details]
Patch

[Andreas Kling]

Comment on attachment 300415 [details]
Patch

r=me
Even if this isn't the thing that fixes the bug, it's a *really* nice cleanup.

[Chris Dumez]

(In reply to comment #3)
> Comment on attachment 300415 [details]
> Patch
> 
> r=me
> Even if this isn't the thing that fixes the bug, it's a *really* nice
> cleanup.

If it does not fix the crashes, then I guess it would mean that someone is adding HistoryItem to PageCache for a given Page, after the Page has died. Sounds unlikely but we'll see.

[WebKit Commit Bot]

Comment on attachment 300415 [details]
Patch

Clearing flags on attachment: 300415

Committed r211569: <http://trac.webkit.org/changeset/211569>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Darin Adler]

Comment on attachment 300415 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=300415&action=review

> Source/WebCore/history/PageCache.cpp:472
> +        // Increment iterator first so it stays invalid after the removal.

You meant to say "stays valid".

[Chris Dumez]

(In reply to comment #7)
> Comment on attachment 300415 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=300415&action=review
> 
> > Source/WebCore/history/PageCache.cpp:472
> > +        // Increment iterator first so it stays invalid after the removal.
> 
> You meant to say "stays valid".

Indeed. Fixed in <http://trac.webkit.org/changeset/211676>, thanks.