From d2ec3f77de8e67b7a3dab3ec827467e0fd797c86 Mon Sep 17 00:00:00 2001 From: Kees Cook 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 Signed-off-by: Greg Kroah-Hartman --- 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 51e0d32883ba..a23fa5ed1d67 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) {