From: Mimi Zohar <zohar@linux.vnet.ibm.com>
Date: Fri, 20 Feb 2009 22:28:29 +0000 (-0800)
Subject: integrity: ima iint radix_tree_lookup locking fix
X-Git-Tag: upstream/snapshot3+hdmi~19893^2~19
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=be38e0fd5f90a91d09e0a85ffb294b70a7be6259;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

integrity: ima iint radix_tree_lookup locking fix

Based on Andrew Morton's comments:
- add missing locks around radix_tree_lookup in ima_iint_insert()

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Morris <jmorris@namei.org>
---

diff --git a/security/integrity/ima/ima_iint.c b/security/integrity/ima/ima_iint.c
index 1f035e8..ec79f1e 100644
--- a/security/integrity/ima/ima_iint.c
+++ b/security/integrity/ima/ima_iint.c
@@ -73,8 +73,10 @@ out:
 	if (rc < 0) {
 		kmem_cache_free(iint_cache, iint);
 		if (rc == -EEXIST) {
+			spin_lock(&ima_iint_lock);
 			iint = radix_tree_lookup(&ima_iint_store,
 						 (unsigned long)inode);
+			spin_unlock(&ima_iint_lock);
 		} else
 			iint = NULL;
 	}