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-rw-r--r--security/selinux/hooks.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index bdd0b32f010..ccaf988f372 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -117,6 +117,8 @@ static struct security_operations *secondary_ops = NULL;
static LIST_HEAD(superblock_security_head);
static DEFINE_SPINLOCK(sb_security_lock);
+static kmem_cache_t *sel_inode_cache;
+
/* Allocate and free functions for each kind of security blob. */
static int task_alloc_security(struct task_struct *task)
@@ -146,10 +148,11 @@ static int inode_alloc_security(struct inode *inode)
struct task_security_struct *tsec = current->security;
struct inode_security_struct *isec;
- isec = kzalloc(sizeof(struct inode_security_struct), GFP_KERNEL);
+ isec = kmem_cache_alloc(sel_inode_cache, SLAB_KERNEL);
if (!isec)
return -ENOMEM;
+ memset(isec, 0, sizeof(*isec));
init_MUTEX(&isec->sem);
INIT_LIST_HEAD(&isec->list);
isec->inode = inode;
@@ -172,7 +175,7 @@ static void inode_free_security(struct inode *inode)
spin_unlock(&sbsec->isec_lock);
inode->i_security = NULL;
- kfree(isec);
+ kmem_cache_free(sel_inode_cache, isec);
}
static int file_alloc_security(struct file *file)
@@ -4406,6 +4409,9 @@ static __init int selinux_init(void)
tsec = current->security;
tsec->osid = tsec->sid = SECINITSID_KERNEL;
+ sel_inode_cache = kmem_cache_create("selinux_inode_security",
+ sizeof(struct inode_security_struct),
+ 0, SLAB_PANIC, NULL, NULL);
avc_init();
original_ops = secondary_ops = security_ops;