[Webkit-unassigned] [Bug 146729] Syscall param sendmsg(msg.msg_iov[0]) points to uninitialised byte(s) in IPC::Connection::sendOutgoingMessage

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=146729

--- Comment #5 from Michael Catanzaro <mcatanzaro at igalia.com> ---
So:

In WebPageProxy::loadAlternateHTMLString we never initialize the request, sandboxExtensionHandle, data, MIMEType, or encodingName properties of LoadParameters. It's arguably not a bug if we never use those parameters, but valgrind justifiably complains that we pass uninitialized memory into the kernel. Let's avoid it by zero-initializing the struct.

In the case of WebProcessPool::ensureNetworkProcess, there's a bunch of stuff we're not initializing in NetworkProcessCreationParameters (e.g. the sandbox extension handles are only conditionally-initialized). Again, we ought to zero-initialize the struct.

The one that valgrind says originates in IPC::Connection::sendOutgoingMessage is less obvious, still trying to figure it out.

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