diff --git a/fs/proc/base.c b/fs/proc/base.c
index a193086..3861bce 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1348,11 +1348,10 @@
 	struct inode *inode = file_inode(file);
 	struct task_struct *p;
 	char buffer[TASK_COMM_LEN];
+	const size_t maxlen = sizeof(buffer) - 1;
 
 	memset(buffer, 0, sizeof(buffer));
-	if (count > sizeof(buffer) - 1)
-		count = sizeof(buffer) - 1;
-	if (copy_from_user(buffer, buf, count))
+	if (copy_from_user(buffer, buf, count > maxlen ? maxlen : count))
 		return -EFAULT;
 
 	p = get_proc_task(inode);