[Webkit-unassigned] [Bug 242518] IPC::Connection::sendOutputMessage(IPC::UnixMessage&) Syscall param sendmsg(msg.msg_iov[2]) points to uninitialised byte(s)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=242518

--- Comment #8 from James Hilliard <james.hilliard1 at gmail.com> ---
If I'm reading the trace right...it looks like something relating to part of layerTreeContext being uninitialized might be the issue?

https://github.com/WebKit/WebKit/blob/e4ff5dfc94ce873599833e9fbfcbe130b2ce3c9f/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/DrawingAreaCoordinatedGraphics.cpp#L565

It looks like the uninitialized bytes originate from that function scope:
==137==  Uninitialised value was created by a stack allocation
==137==    at 0xEFF7EA8: WebKit::DrawingAreaCoordinatedGraphics::sendDidUpdateBackingStoreState() (DrawingAreaCoordinatedGraphics.cpp:529)

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