This is a note to let you know that I've just added the patch titled
kernfs: fix off by one error.
to the 3.14-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:
kernfs-fix-off-by-one-error.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 88391d49abb7d8dee91d405f96bd9e003cb6798d Mon Sep 17 00:00:00 2001
From: Richard Cochran <richardcochran@xxxxxxxxx>
Date: Wed, 5 Mar 2014 17:10:52 +0100
Subject: kernfs: fix off by one error.
From: Richard Cochran <richardcochran@xxxxxxxxx>
commit 88391d49abb7d8dee91d405f96bd9e003cb6798d upstream.
The hash values 0 and 1 are reserved for magic directory entries, but
the code only prevents names hashing to 0. This patch fixes the test
to also prevent hash value 1.
Signed-off-by: Richard Cochran <richardcochran@xxxxxxxxx>
Reviewed-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/kernfs/dir.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -37,7 +37,7 @@ static unsigned int kernfs_name_hash(con
hash = (end_name_hash(hash) ^ hash_ptr((void *)ns, 31));
hash &= 0x7fffffffU;
/* Reserve hash numbers 0, 1 and INT_MAX for magic directory entries */
- if (hash < 1)
+ if (hash < 2)
hash += 2;
if (hash >= INT_MAX)
hash = INT_MAX - 1;
Patches currently in stable-queue which might be from richardcochran@xxxxxxxxx are
queue-3.14/kernfs-fix-off-by-one-error.patch
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