Bug 7755 – CIContext textures leaking on Intel during run-webkit-tests --svg --leaks

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: SVG

[Eric Seidel (no email)]

CIContext textures leaking on Intel during run-webkit-tests --svg --leaks

Example:

Process 16476: 39406 nodes malloced for 23703 KB
Process 16476: 40 leaks for 1456 total leaked bytes.
Leak: 0x21caf210  size=64       
        0x00000000 0x00000000 0x00000000 0x00000000     ................
        0x00000000 0x00000000 0x00000000 0x00000000     ................
        0x00000000 0x00000000 0x00000000 0x00000000     ................
        0x00000000 0x00000000 0x00000000 0x00000000     ................
        Call stack: [thread 71d1f23]: | 0x3 | start | _start | main | dumpRenderTree | -[NSRunLoop runMode:beforeDate:] | CFRunLoopRunInMode | CFRunLoopRunSpecific | _sendCallback
s | -[NSURLConnection(NSURLConnectionInternal) _sendCallbacks] | -[NSURLConnection(NSURLConnectionInternal) _sendDidFinishLoadingCallback] | -[WebLoader connectionDidFinishLoading
:] | -[WebSubresourceLoader didFinishLoading] | -[WebSubresourceLoader signalFinish] | -[WebView(WebPrivate) _finishedLoadingResourceFromDataSource:] | -[WebFrame(WebPrivate) _che
ckLoadComplete] | -[WebFrame(WebPrivate) _checkLoadCompleteForThisFrame] | _objc_msgForward | -[NSObject(NSForwardInvocation) forward::] | -[_WebSafeForwarder forwardInvocation:] 
| -[NSInvocation invokeWithTarget:] | -[NSInvocation invoke] | objc_msgSendv | -[WaitUntilDoneDelegate webView:didFinishLoadForFrame:] | -[WaitUntilDoneDelegate webView:locationCh
angeDone:forDataSource:] | dump | -[NSView cacheDisplayInRect:toBitmapImageRep:] | -[NSView displayRectIgnoringOpacity:inContext:] | -[NSView _recursiveDisplayRectIgnoringOpacity:
inContext:topView:] | -[NSView _recursiveDisplayRectIgnoringOpacity:inContext:topView:] | -[NSView _recursiveDisplayRectIgnoringOpacity:inContext:topView:] | -[NSView _recursiveDi
splayRectIgnoringOpacity:inContext:topView:] | -[NSView _recursiveDisplayRectIgnoringOpacity:inContext:topView:] | -[WebHTMLView drawRect:] | -[WebCoreFrameBridge drawRect:] | Web
Core::Frame::paint(WebCore::GraphicsContext*, WebCore::IntRect const&) | WebCore::RenderLayer::paint(WebCore::GraphicsContext*, WebCore::IntRect const&, bool, WebCore::RenderObjec
t*) | WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, bool, bool, WebCore::RenderObject*) | WebCore::RenderCanvas::pain
t(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::KCanvasContainerQuartz::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBox::paint(WebCore::RenderObj
ect::PaintInfo&, int, int) | WebCore::RenderSVGImage::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::KCanvasFilterQuartz::applyFilter(WebCore::FloatRect const&) | -
[CIContext drawImage:atPoint:fromRect:] | -[CIContext drawImage:inRect:fromRect:] | -[CICGContextImpl render:] | CGContextDrawImage | ripc_DrawImage | ripc_AcquireImage | CGSImage
DataLockWithReference | img_data_lock | CGAccessSessionGetBytePointer | provider_get_byte_pointer | provider_ensure_data | fe_image_get_bitmap | fe_image_render_ | fe_tree_render_
image | fe_tree_render | fe_tree_render_apply | fe_tree_create_texture | fe_texture_new | fe_accel_texture_cache | fe_texture_cache_new | sl_hash_table_new_ | calloc 
Leak: 0x21cae630  size=64       

This may be a CG bug.  I don't see these same leaks on PPC.

[Eric Seidel (no email)]

It's also possible this could be a symptom of leaks/fastMalloc interaction.  We've had issues in the past where leaks reported false leaks due to our use of fastMalloc.

[Eric Seidel (no email)]

I'm runing a pre-release version of the OS (8I1106), so that might also be the cause.

[Eric Seidel (no email)]

This bug hasn't been seen in a very long time.