linux-kernel - Re: [PATCH v2 1/2] usbip: Fix-format-overflow

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Date:   Wed, 22 Feb 2017 20:14:25 +0200
From:   Jonathan Dieter <jdieter@...bg.com>
To:     Krzysztof Opasiak <k.opasiak@...sung.com>,
        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>,
        "open list:USB OVER IP DRIVER" <linux-usb@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] usbip: Fix-format-overflow

On Wed, 2017-02-22 at 06:49 +0100, Krzysztof Opasiak wrote:
> Hi,
> 
> W dniu 2017-02-21 o 18:57, Jonathan Dieter pisze:
<snip>
> >  	char busid[SYSFS_BUS_ID_SIZE];
> > +	unsigned int size;
> 
> I'm not really convinced to use unsigned here. snprintf() is declared
> to 
> return signed integer so we should assume that some of its 
> implementation may return negative error code. Any rationale to this 
> instead of just doing a cast for comparsion but signed value to print
> error?

No, you're absolutely right.  I've fixed this and am sending the next
revision now.

Jonathan