This is a note to let you know that I've just added the patch titled
eCryptfs: fix 32 bit corruption issue
to the 3.11-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:
ecryptfs-fix-32-bit-corruption-issue.patch
and it can be found in the queue-3.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 43b7c6c6a4e3916edd186ceb61be0c67d1e0969e Mon Sep 17 00:00:00 2001
From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Date: Thu, 24 Oct 2013 14:08:07 +0000
Subject: eCryptfs: fix 32 bit corruption issue
From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
commit 43b7c6c6a4e3916edd186ceb61be0c67d1e0969e upstream.
Shifting page->index on 32 bit systems was overflowing, causing
data corruption of > 4GB files. Fix this by casting it first.
https://launchpad.net/bugs/1243636
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Reported-by: Lars Duesing <lars.duesing@xxxxxxxxxxxxxx>
Signed-off-by: Tyler Hicks <tyhicks@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ecryptfs/crypto.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -408,7 +408,7 @@ static loff_t lower_offset_for_page(stru
struct page *page)
{
return ecryptfs_lower_header_size(crypt_stat) +
- (page->index << PAGE_CACHE_SHIFT);
+ ((loff_t)page->index << PAGE_CACHE_SHIFT);
}
/**
Patches currently in stable-queue which might be from colin.king@xxxxxxxxxxxxx are
queue-3.11/ecryptfs-fix-32-bit-corruption-issue.patch
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