diff --git a/fs/proc/base.c b/fs/proc/base.c
index 5a8b89a..f801693 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1404,8 +1404,8 @@ static int pid_revalidate(struct dentry 
 		} else {
 			inode->i_uid = 0;
 			inode->i_gid = 0;
-			inode->i_mode = 0;
 		}
+		inode->i_mode &= ~(S_ISUID | S_ISGID);
 		security_task_to_inode(task, inode);
 		return 1;
 	}
@@ -1433,6 +1433,7 @@ static int tid_fd_revalidate(struct dent
 				inode->i_uid = 0;
 				inode->i_gid = 0;
 			}
+			inode->i_mode &= ~(S_ISUID | S_ISGID);
 			security_task_to_inode(task, inode);
 			return 1;
 		}