linux-kernel - Re: [PATCH v4 1/2] usbip: Fix-format-overflow

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Message-ID: <1489650479.2097.9.camel@lesbg.com>
Date:   Thu, 16 Mar 2017 09:47:59 +0200
From:   Jonathan Dieter <jdieter@...bg.com>
To:     linux-kernel@...r.kernel.org
Cc:     Valentina Manea <valentina.manea.m@...il.com>,
        Shuah Khan <shuah@...nel.org>,
        Peter Senna Tschudin <peter.senna@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Krzysztof Opasiak <k.opasiak@...sung.com>,
        "open list:USB OVER IP DRIVER" <linux-usb@...r.kernel.org>
Subject: Re: [PATCH v4 1/2] usbip: Fix-format-overflow

On Mon, 2017-02-27 at 10:31 +0200, Jonathan Dieter wrote:
> The usbip userspace tools call sprintf()/snprintf() and don't check for
> the return value which can lead the paths to overflow, truncating the
> final file in the path.
> 
> More urgently, GCC 7 now warns that these aren't checked with
> -Wformat-overflow, and with -Werror enabled in configure.ac, that makes
> these tools unbuildable.
> 
> This patch fixes these problems by replacing sprintf() with snprintf() in
> one place and adding checks for the return value of snprintf().
> 
> > Reviewed-by: Peter Senna Tschudin <peter.senna@...il.com>
> > Signed-off-by: Jonathan Dieter <jdieter@...bg.com>
> ---
> Changes since v3
>  * Cast sizeof to long unsigned when printing errors to fix building for 32-bit
>    architectures

Just wanted to check if there's anything else I need to do to make this
ready?

Thanks,
Jonathan