diff --git a/drivers/video/msm/mdss/mdss_debug.c b/drivers/video/msm/mdss/mdss_debug.c
index 868883e9d5dd7cf8f9fb24ee500fb426f69005db..a10af05d6fafb50dc4e28e3492d0d565b236ad54 100644
--- a/drivers/video/msm/mdss/mdss_debug.c
+++ b/drivers/video/msm/mdss/mdss_debug.c
@@ -54,11 +54,13 @@ static int panel_debug_base_open(struct inode *inode, struct file *file)
 static int panel_debug_base_release(struct inode *inode, struct file *file)
 {
 	struct mdss_debug_base *dbg = file->private_data;
+	mutex_lock(&mdss_debug_lock);
 	if (dbg && dbg->buf) {
 		kfree(dbg->buf);
 		dbg->buf_len = 0;
 		dbg->buf = NULL;
 	}
+	mutex_unlock(&mdss_debug_lock);
 	return 0;
 }
 
@@ -353,11 +355,13 @@ static int mdss_debug_base_open(struct inode *inode, struct file *file)
 static int mdss_debug_base_release(struct inode *inode, struct file *file)
 {
 	struct mdss_debug_base *dbg = file->private_data;
+	mutex_lock(&mdss_debug_lock);
 	if (dbg && dbg->buf) {
 		kfree(dbg->buf);
 		dbg->buf_len = 0;
 		dbg->buf = NULL;
 	}
+	mutex_unlock(&mdss_debug_lock);
 	return 0;
 }