This is a note to let you know that I've just added the patch titled
TOMOYO: Fix memory leak upon file open.
to the 2.6.38-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:
tomoyo-fix-memory-leak-upon-file-open.patch
and it can be found in the queue-2.6.38 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From eae61f3c829439f8f9121b5cd48a14be04df451f Mon Sep 17 00:00:00 2001
From: Tetsuo Handa <[email protected]>
Date: Wed, 2 Mar 2011 16:54:24 +0900
Subject: TOMOYO: Fix memory leak upon file open.
From: Tetsuo Handa <[email protected]>
commit eae61f3c829439f8f9121b5cd48a14be04df451f upstream.
In tomoyo_check_open_permission() since 2.6.36, TOMOYO was by error
recalculating already calculated pathname when checking allow_rewrite
permission. As a result, memory will leak whenever a file is opened for writing
without O_APPEND flag. Also, performance will degrade because TOMOYO is
calculating pathname regardless of profile configuration.
This patch fixes the leak and performance degrade.
Signed-off-by: Tetsuo Handa <[email protected]>
Signed-off-by: James Morris <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
security/tomoyo/file.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
--- a/security/tomoyo/file.c
+++ b/security/tomoyo/file.c
@@ -927,7 +927,7 @@ int tomoyo_check_open_permission(struct
struct path *path, const int flag)
{
const u8 acc_mode = ACC_MODE(flag);
- int error = -ENOMEM;
+ int error = 0;
struct tomoyo_path_info buf;
struct tomoyo_request_info r;
int idx;
@@ -938,9 +938,6 @@ int tomoyo_check_open_permission(struct
buf.name = NULL;
r.mode = TOMOYO_CONFIG_DISABLED;
idx = tomoyo_read_lock();
- if (!tomoyo_get_realpath(&buf, path))
- goto out;
- error = 0;
/*
* If the filename is specified by "deny_rewrite" keyword,
* we need to check "allow_rewrite" permission when the filename is not
Patches currently in stable-queue which might be from
[email protected] are
queue-2.6.38/tomoyo-fix-memory-leak-upon-file-open.patch
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