linux: overlayfs: Drop kernel patch resolving a file change notification issue

Revert the patch resolving a file change notitfication issue (for IMA
appraisal) since this patch fails in 'many downstream kernels'.

- https://lists.yoctoproject.org/g/yocto/message/59928
- https://lists.yoctoproject.org/g/yocto/message/59929

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

2 files changed, 0 insertions, 43 deletions

diff --git a/meta-integrity/recipes-kernel/linux/linux/0001-ovl-Increment-iversion-upon-file-changes.patch b/meta-integrity/recipes-kernel/linux/linux/0001-ovl-Increment-iversion-upon-file-changes.patch
deleted file mode 100644
index d2b5c28..0000000
--- a/meta-integrity/recipes-kernel/linux/linux/0001-ovl-Increment-iversion-upon-file-changes.patch
+++ /dev/null
@@ -1,42 +0,0 @@
-From e9ed62e8d1d3eee7ffe862d9812c5320d3b9bd88 Mon Sep 17 00:00:00 2001
-From: Stefan Berger <stefanb@linux.ibm.com>
-Date: Thu, 6 Apr 2023 11:27:29 -0400
-Subject: [PATCH] ovl: Increment iversion upon file changes
-
-This is a temporary patch for kernels that do not implement
-STATX_CHANGE_COOKIE (<= 6.2). The successor patch will be this one:
-
-https://lore.kernel.org/linux-integrity/20230418-engste-gastwirtschaft-601fb389bba5@brauner/T/#m3bf84296fe9e6499abb6e3191693948add2ff459
-
-Increment the lower inode's iversion for IMA to be able to recognize
-changes to the file.
-
-Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
----
- fs/overlayfs/file.c | 3 +++
- 1 file changed, 3 insertions(+)
-
-diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
-index 6011f955436b..1dfe5e7bfe1c 100644
---- a/fs/overlayfs/file.c
-+++ b/fs/overlayfs/file.c
-@@ -13,6 +13,7 @@
- #include <linux/security.h>
- #include <linux/mm.h>
- #include <linux/fs.h>
-+#include <linux/iversion.h>
- #include "overlayfs.h"
- 
- struct ovl_aio_req {
-@@ -408,6 +409,8 @@ static ssize_t ovl_write_iter(struct kiocb *iocb, struct iov_iter *iter)
-                if (ret != -EIOCBQUEUED)
-                        ovl_aio_cleanup_handler(aio_req);
-        }
-+       if (ret > 0)
-+               inode_maybe_inc_iversion(inode, false);
- out:
-        revert_creds(old_cred);
- out_fdput:
--- 
-2.34.1
-
diff --git a/meta-integrity/recipes-kernel/linux/linux_ima.inc b/meta-integrity/recipes-kernel/linux/linux_ima.inc
index 9d48e5c..0b6f530 100644
--- a/meta-integrity/recipes-kernel/linux/linux_ima.inc
+++ b/meta-integrity/recipes-kernel/linux/linux_ima.inc
@@ -2,7 +2,6 @@ FILESEXTRAPATHS:append := "${THISDIR}/linux:"
 
 SRC_URI += " \
     ${@bb.utils.contains('DISTRO_FEATURES', 'ima', 'file://ima.scc', '', d)} \
-    file://0001-ovl-Increment-iversion-upon-file-changes.patch \
 "
 
 do_configure() {