linux-kernel - Re: [PATCH] ptp: ptp_clockmatrix: initialize variables

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Message-ID: <20201012220126.GB1310@hoboy>
Date:   Mon, 12 Oct 2020 15:01:26 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     trix@...hat.com
Cc:     natechancellor@...il.com, ndesaulniers@...gle.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com
Subject: Re: [PATCH] ptp: ptp_clockmatrix: initialize variables

On Sun, Oct 11, 2020 at 01:09:55PM -0700, trix@...hat.com wrote:
> From: Tom Rix <trix@...hat.com>
> 
> Clang static analysis reports this representative problem
> 
> ptp_clockmatrix.c:1852:2: warning: 5th function call argument
>   is an uninitialized value
>         snprintf(idtcm->version, sizeof(idtcm->version), "%u.%u.%u",
>         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> idtcm_display_version_info() calls several idtcm_read_*'s without
> checking a return status.

So why not check the return status?

Your patch papers over the issue.

Thanks,
Richard