This is a note to let you know that I've just added the patch titled
ovl: use O_LARGEFILE in ovl_copy_up()
to the 4.2-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:
ovl-use-o_largefile-in-ovl_copy_up.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0480334fa60488d12ae101a02d7d9e1a3d03d7dd Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@xxxxxxxxxx>
Date: Fri, 18 Sep 2015 11:45:12 +0100
Subject: ovl: use O_LARGEFILE in ovl_copy_up()
From: David Howells <dhowells@xxxxxxxxxx>
commit 0480334fa60488d12ae101a02d7d9e1a3d03d7dd upstream.
Open the lower file with O_LARGEFILE in ovl_copy_up().
Pass O_LARGEFILE unconditionally in ovl_copy_up_data() as it's purely for
catching 32-bit userspace dealing with a file large enough that it'll be
mishandled if the application isn't aware that there might be an integer
overflow. Inside the kernel, there shouldn't be any problems.
Reported-by: Ulrich Obergfell <uobergfe@xxxxxxxxxx>
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Signed-off-by: Miklos Szeredi <miklos@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/overlayfs/copy_up.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -81,11 +81,11 @@ static int ovl_copy_up_data(struct path
if (len == 0)
return 0;
- old_file = ovl_path_open(old, O_RDONLY);
+ old_file = ovl_path_open(old, O_LARGEFILE | O_RDONLY);
if (IS_ERR(old_file))
return PTR_ERR(old_file);
- new_file = ovl_path_open(new, O_WRONLY);
+ new_file = ovl_path_open(new, O_LARGEFILE | O_WRONLY);
if (IS_ERR(new_file)) {
error = PTR_ERR(new_file);
goto out_fput;
Patches currently in stable-queue which might be from dhowells@xxxxxxxxxx are
queue-4.2/ovl-fix-dentry-reference-leak.patch
queue-4.2/ovl-use-o_largefile-in-ovl_copy_up.patch
queue-4.2/ovl-fix-open-in-stacked-overlay.patch
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