diff --git a/drivers/media/platform/msm/camera_v2/msm.c b/drivers/media/platform/msm/camera_v2/msm.c
index 6a969401e950..60532929a916 100644
--- a/drivers/media/platform/msm/camera_v2/msm.c
+++ b/drivers/media/platform/msm/camera_v2/msm.c
@@ -1288,7 +1288,7 @@ static ssize_t write_logsync(struct file *file, const char __user *buf,
 	uint64_t seq_num = 0;
 	int ret;
 
-	if (copy_from_user(lbuf, buf, sizeof(lbuf)))
+	if (copy_from_user(lbuf, buf, sizeof(lbuf) - 1))
 		return -EFAULT;
 
 	ret = sscanf(lbuf, "%llu", &seq_num);