100639 2012-10-29 01:23:30 -0700 While Using WebGL, MiniBrowser segfaults on Refreshing the page. 2012-10-30 06:44:04 -0700 1 1 1 Unclassified WebKit WebKit EFL 528+ (Nightly build) PC Linux RESOLVED FIXED P2 Normal --- 0 kalyan.kondapally webkit-unassigned lucas.de.marchi webkit.review.bot oldest_to_newest 753137 0 kalyan.kondapally 2012-10-29 01:23:30 -0700 Open any site using WebGL with MiniBrowser. Refresh the Page.This results in a seg fault in MiniBrowser. 753138 1 171173 kalyan.kondapally 2012-10-29 01:24:53 -0700 Created attachment 171173 fix-proposal TextureMapperSurfaceBackingStore can import texture's from a GraphicSurface. In such cases GraphicsSurfaceGLX creates an XPixmap to read texture content from a given WindowId but doesn't create any new window.However, OffScreenRootWindow always tries to unmap window(in it's destruction) resulting in segfault.Now,We try to check for a valid Window before trying to unmap the window. 753185 2 171181 kalyan.kondapally 2012-10-29 02:22:06 -0700 Created attachment 171181 proposed-patch 753193 3 171183 kalyan.kondapally 2012-10-29 02:36:31 -0700 Created attachment 171183 patch 753225 4 171191 kalyan.kondapally 2012-10-29 03:29:35 -0700 Created attachment 171191 proposed-patch rebased 754135 5 171191 kenneth 2012-10-30 02:53:45 -0700 Comment on attachment 171191 proposed-patch View in context: https://bugs.webkit.org/attachment.cgi?id=171191&action=review > Source/WebCore/ChangeLog:12 > + TextureMapperSurfaceBackingStore can import texture's from a GraphicSurface. > + In such cases GraphicsSurfaceGLX creates an XPixmap to read texture content > + from a given WindowId but doesn't create any new window.However, OffScreenRootWindow > + always tries to unmap window(in it's destruction) resulting in segfault.Now,We check > + if the window is valid before trying to unmap it. Could you add some spaces after . and start of new sentences > Source/WebCore/platform/graphics/surfaces/qt/GraphicsSurfaceGLX.cpp:96 > ~OffScreenRootWindow() > { > if (!--m_refCount) { > - XUnmapWindow(m_display, m_window); > - XDestroyWindow(m_display, m_window); > - if (m_display) > + if (m_display) { > + if (m_window) { > + XUnmapWindow(m_display, m_window); > + XDestroyWindow(m_display, m_window); > + m_window = 0; > + } > XCloseDisplay(m_display); > - m_display = 0; > + m_display = 0; > + } > } > } I would try avoiding indentating tha much like if (--m_refCount) return; ... That is like the webkit way 754241 6 171425 kalyan.kondapally 2012-10-30 05:23:42 -0700 Created attachment 171425 patch review-changes 754313 7 171425 webkit.review.bot 2012-10-30 06:44:01 -0700 Comment on attachment 171425 patch Clearing flags on attachment: 171425 Committed r132906: <http://trac.webkit.org/changeset/132906> 754314 8 webkit.review.bot 2012-10-30 06:44:04 -0700 All reviewed patches have been landed. Closing bug. 171173 2012-10-29 01:24:53 -0700 2012-10-29 02:22:06 -0700 fix-proposal segFaultfix.patch text/plain 2013 kalyan.kondapally ZGlmZiAtLWdpdCBhL1NvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZyBiL1NvdXJjZS9XZWJDb3JlL0No YW5nZUxvZwppbmRleCAyYTkyMjdjLi4zMzc3NTk4IDEwMDY0NAotLS0gYS9Tb3VyY2UvV2ViQ29y ZS9DaGFuZ2VMb2cKKysrIGIvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsMTkg QEAKKzIwMTItMTAtMjkgIEtvbmRhcGFsbHkgS2FseWFuICA8a2FseWFuLmtvbmRhcGFsbHlAaW50 ZWwuY29tPgorCisgICAgICAgIFtRdF1bRUZMXVtBQ11XaGlsZSBVc2luZyBXZWJHTCwgTWluaUJy b3dzZXIgc2VnZmF1bHRzIG9uIFJlZnJlc2hpbmcgdGhlIHBhZ2UuLgorICAgICAgICBodHRwczov L2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MTAwNjM5LgorCisgICAgICAgIFJldmll d2VkIGJ5IE5PQk9EWSAoT09QUyEpLgorCisgICAgICAgIFRleHR1cmVNYXBwZXJTdXJmYWNlQmFj a2luZ1N0b3JlIGNhbiBpbXBvcnQgdGV4dHVyZSdzIGZyb20gYSBHcmFwaGljU3VyZmFjZS4KKyAg ICAgICAgSW4gc3VjaCBjYXNlcyBHcmFwaGljc1N1cmZhY2VHTFggY3JlYXRlcyBhbiBYUGl4bWFw IHRvIHJlYWQgdGV4dHVyZSBjb250ZW50CisgICAgICAgIGZyb20gYSBnaXZlbiBXaW5kb3dJZCBi 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