From d2ec3f77de8e67b7a3dab3ec827467e0fd797c86 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Thu, 8 Sep 2016 15:35:59 -0700
Subject: [PATCH] pty: make ptmx file ops read-only after init
The ptmx_fops structure is only changed during init, so mark it as such.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/pty.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index 51e0d32883ba7..a23fa5ed1d67f 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -800,7 +800,7 @@ out_free_file:
return retval;
}
-static struct file_operations ptmx_fops;
+static struct file_operations ptmx_fops __ro_after_init;
static void __init unix98_pty_init(void)
{
--
2.49.0