linux-kernel - Re: [PATCH] tty: n_gsm: return -EINVAL when adaption is not supported

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Message-ID: <Ymfhtv5b9M33AQuc@kroah.com>
Date:   Tue, 26 Apr 2022 14:12:38 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Tom Rix <trix@...hat.com>
Cc:     jirislaby@...nel.org, nathan@...nel.org, ndesaulniers@...gle.com,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH] tty: n_gsm: return -EINVAL when adaption is not supported

On Tue, Apr 26, 2022 at 08:05:54AM -0400, Tom Rix wrote:
> The clang build fails with
> n_gsm.c:940:13: error: variable 'size' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
>         } else if (dlci->adaption == 2) {
>                    ^~~~~~~~~~~~~~~~~~~
> 
> The else should return an error, so return -EINVAL.
> 
> Signed-off-by: Tom Rix <trix@...hat.com>

What commit id does this fix?  Any reason you didn't cc: the author of
the recent changes to this code?

Is this the same issue that 0-day reported?

thanks,

greg k-h