linux-kernel - Re: [PATCH] staging: rtl8723bs: Fix uninitialized variable

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Message-ID: <YL3lih8OqGOLjVBf@kroah.com>
Date:   Mon, 7 Jun 2021 11:23:22 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     Wenli Looi <wlooi@...lgary.ca>, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: rtl8723bs: Fix uninitialized variable

On Mon, Jun 07, 2021 at 11:33:17AM +0300, Dan Carpenter wrote:
> Greg asked about struct holes and the answer is "= {}" will zero out
> struct holes but it's not important in this case.  The "= {}" is a GCC
> extension for zeroing structs and it's not part of the C standard.
> The struct has a kernel pointer in it so we had better not be shairing
> it to user space.

I thought we proved that "= {}" will _NOT_ zero out holes in structures.
Or did we really prove that?  I can't remember now, do you?

thanks,

greg k-h