[PATCH] staging: greybus: Use scnprintf() for avoiding potential buffer overflow

[Dan Carpenter]

On Wed, Mar 11, 2020 at 10:58:14AM +0100, Johan Hovold wrote:
> On Wed, Mar 11, 2020 at 10:19:06AM +0100, Takashi Iwai wrote:
> > Since snprintf() returns the would-be-output size instead of the
> > actual output size, the succeeding calls may go beyond the given
> > buffer limit.  Fix it by replacing with scnprintf().
> > 
> > Signed-off-by: Takashi Iwai <tiwai at suse.de>
> > ---
> >  drivers/staging/greybus/tools/loopback_test.c | 24 ++++++++++++------------
> 
> Thanks for the fix.
> 
> Would you mind resending with a "staging: greybus: loopback_test:"
> prefix since this is not a subsystem wide issue, bur rather a bug in a
> specific user-space tool?

I'm surprised that user-space even has scnprintf().

regards,
dan carpenter