From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 15 Oct 2015 07:01:42 +0000 (+0300)
Subject: ALSA: oss: underflow in snd_mixer_oss_proc_write()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5a1f8c42259a424cfd262185da872764dcc673ad;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

ALSA: oss: underflow in snd_mixer_oss_proc_write()

We cap the upper bound of "idx" but not the negative side.  Let's make
it unsigned to fix this.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c
index a99f7200ff3f..7a8c79dd9734 100644
--- a/sound/core/oss/mixer_oss.c
+++ b/sound/core/oss/mixer_oss.c
@@ -1177,7 +1177,8 @@ static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
 	struct snd_mixer_oss *mixer = entry->private_data;
 	char line[128], str[32], idxstr[16];
 	const char *cptr;
-	int ch, idx;
+	unsigned int idx;
+	int ch;
 	struct snd_mixer_oss_assign_table *tbl;
 	struct slot *slot;