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authorDavid Henningsson <david.henningsson@canonical.com>2012-10-17 12:43:44 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-21 09:28:01 -0700
commitbb4e97376e84d98994a5f576e2bd080d3aeee232 (patch)
tree870a9df57630a164c3520d1c663b009d97711375 /sound
parent7ec51fc74149ac5caafffce2b065e25ef621e2c1 (diff)
ALSA: hda - Always check array bounds in alc_get_line_out_pfx
commit 71aa5ebe36a4e936eff281b375a4707b6a8320f2 upstream. Even when CONFIG_SND_DEBUG is not enabled, we don't want to return an arbitrary memory location when the channel count is larger than we expected. Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/patch_realtek.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 94747f8a2493..94b765b31ea4 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2665,8 +2665,10 @@ static const char *alc_get_line_out_pfx(struct alc_spec *spec, int ch,
return "PCM";
break;
}
- if (snd_BUG_ON(ch >= ARRAY_SIZE(channel_name)))
+ if (ch >= ARRAY_SIZE(channel_name)) {
+ snd_BUG();
return "PCM";
+ }
return channel_name[ch];
}