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

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Message-ID: <4789ae7a-64a2-566b-d445-b8433d3f867a@redhat.com>
Date:   Tue, 26 Apr 2022 11:16:35 -0700
From:   Tom Rix <trix@...hat.com>
To:     Greg KH <gregkh@...uxfoundation.org>
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 4/26/22 5:12 AM, Greg KH wrote:
> 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?
Sorry missed this part.
> Is this the same issue that 0-day reported?

Maybe, it was part of next's update today.  Where is 0-day reported ?

Tom

>
> thanks,
>
> greg k-h
>