From 145a32fe57e3ce195f52611ebadd0df911a56615 Mon Sep 17 00:00:00 2001
From: Wenwen Wang <wenwen@cs.uga.edu>
Date: Thu, 15 Aug 2019 22:50:02 -0500
Subject: [PATCH] airo: fix memory leaks
Git-commit: 145a32fe57e3ce195f52611ebadd0df911a56615
Patch-mainline: v5.4-rc1
References: jsc#SLE-13430, bsc#1176741

In proc_BSSList_open(), 'file->private_data' is allocated through kzalloc()
and 'data->rbuffer' is allocated through kmalloc(). In the following
execution, if an error occurs, they are not deallocated, leading to memory
leaks. To fix this issue, free the allocated memory regions before
returning the error.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/cisco/airo.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c
index 9342ffbe1e81..f43c06569ea1 100644
--- a/drivers/net/wireless/cisco/airo.c
+++ b/drivers/net/wireless/cisco/airo.c
@@ -5441,11 +5441,18 @@ static int proc_BSSList_open( struct inode *inode, struct file *file ) {
 			Cmd cmd;
 			Resp rsp;
 
-			if (ai->flags & FLAG_RADIO_MASK) return -ENETDOWN;
+			if (ai->flags & FLAG_RADIO_MASK) {
+				kfree(data->rbuffer);
+				kfree(file->private_data);
+				return -ENETDOWN;
+			}
 			memset(&cmd, 0, sizeof(cmd));
 			cmd.cmd=CMD_LISTBSS;
-			if (down_interruptible(&ai->sem))
+			if (down_interruptible(&ai->sem)) {
+				kfree(data->rbuffer);
+				kfree(file->private_data);
 				return -ERESTARTSYS;
+			}
 			issuecommand(ai, &cmd, &rsp);
 			up(&ai->sem);
 			data->readlen = 0;
-- 
2.16.4