This is a note to let you know that I've just added the patch titled
gcc-plugins: randstruct: Update code comment in relayout_struct()
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
gcc-plugins-randstruct-update-code-comment-in-relayout_struct.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d71f22365a9caca82d424f3a33445de46567e198 Mon Sep 17 00:00:00 2001
From: "Gustavo A. R. Silva" <gustavoars@xxxxxxxxxx>
Date: Sat, 25 Nov 2023 15:49:12 -0600
Subject: gcc-plugins: randstruct: Update code comment in relayout_struct()
From: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
commit d71f22365a9caca82d424f3a33445de46567e198 upstream.
Update code comment to clarify that the only element whose layout is
not randomized is a proper C99 flexible-array member. This update is
complementary to commit 1ee60356c2dc ("gcc-plugins: randstruct: Only
warn about true flexible arrays")
Signed-off-by: "Gustavo A. R. Silva" <gustavoars@xxxxxxxxxx>
Link: https://lore.kernel.org/r/ZWJr2MWDjXLHE8ap@work
Fixes: 1ee60356c2dc ("gcc-plugins: randstruct: Only warn about true flexible arrays")
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
scripts/gcc-plugins/randomize_layout_plugin.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/scripts/gcc-plugins/randomize_layout_plugin.c
+++ b/scripts/gcc-plugins/randomize_layout_plugin.c
@@ -339,8 +339,7 @@ static int relayout_struct(tree type)
/*
* enforce that we don't randomize the layout of the last
- * element of a struct if it's a 0 or 1-length array
- * or a proper flexible array
+ * element of a struct if it's a proper flexible array
*/
if (is_flexible_array(newtree[num_fields - 1])) {
has_flexarray = true;
Patches currently in stable-queue which might be from gustavoars@xxxxxxxxxx are
queue-6.6/gcc-plugins-randstruct-update-code-comment-in-relayout_struct.patch
