From: Dan Carpenter Date: Sat, 22 Aug 2015 09:24:13 +0000 (+0300) Subject: ALSA: hdsp: silence a sprinft() overflow warning X-Git-Tag: firefly_0821_release~176^2~1082^2~28 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a3b3a9db5d26bef1e62054c95c3d7701de5110d5;p=firefly-linux-kernel-4.4.55.git ALSA: hdsp: silence a sprinft() overflow warning card->shortname is a 32 char string so the sprintf() can theoretically overflow. snd_rawmidi_new() can accept strings up to 64 bytes long. I have made the temporay buf[] array 40 bytes long and changed the sprintf() to snprintf(). Signed-off-by: Dan Carpenter Signed-off-by: Takashi Iwai --- diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c index 468a95cdce70..9bba275b4c9b 100644 --- a/sound/pci/rme9652/hdsp.c +++ b/sound/pci/rme9652/hdsp.c @@ -1526,7 +1526,7 @@ static struct snd_rawmidi_ops snd_hdsp_midi_input = static int snd_hdsp_create_midi (struct snd_card *card, struct hdsp *hdsp, int id) { - char buf[32]; + char buf[40]; hdsp->midi[id].id = id; hdsp->midi[id].rmidi = NULL; @@ -1537,7 +1537,7 @@ static int snd_hdsp_create_midi (struct snd_card *card, struct hdsp *hdsp, int i hdsp->midi[id].pending = 0; spin_lock_init (&hdsp->midi[id].lock); - sprintf (buf, "%s MIDI %d", card->shortname, id+1); + snprintf(buf, sizeof(buf), "%s MIDI %d", card->shortname, id + 1); if (snd_rawmidi_new (card, buf, id, 1, 1, &hdsp->midi[id].rmidi) < 0) return -1;