diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index bdfc8a76a4f7..f1f98c4c7c29 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -1572,6 +1572,7 @@ struct lsm_blob_sizes {
 	int	lbs_cred;
 	int	lbs_file;
 	int	lbs_inode;
+	int	lbs_superblock;
 	int	lbs_ipc;
 	int	lbs_msg_msg;
 	int	lbs_task;
diff --git a/security/security.c b/security/security.c
index 401663b5b70e..8a9932174ad3 100644
--- a/security/security.c
+++ b/security/security.c
@@ -203,6 +203,7 @@ static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed)
 	lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode);
 	lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc);
 	lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg);
+	lsm_set_blob_size(&needed->lbs_superblock, &blob_sizes.lbs_superblock);
 	lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task);
 }
 
@@ -333,12 +334,13 @@ static void __init ordered_lsm_init(void)
 	for (lsm = ordered_lsms; *lsm; lsm++)
 		prepare_lsm(*lsm);
 
-	init_debug("cred blob size     = %d\n", blob_sizes.lbs_cred);
-	init_debug("file blob size     = %d\n", blob_sizes.lbs_file);
-	init_debug("inode blob size    = %d\n", blob_sizes.lbs_inode);
-	init_debug("ipc blob size      = %d\n", blob_sizes.lbs_ipc);
-	init_debug("msg_msg blob size  = %d\n", blob_sizes.lbs_msg_msg);
-	init_debug("task blob size     = %d\n", blob_sizes.lbs_task);
+	init_debug("cred blob size       = %d\n", blob_sizes.lbs_cred);
+	init_debug("file blob size       = %d\n", blob_sizes.lbs_file);
+	init_debug("inode blob size      = %d\n", blob_sizes.lbs_inode);
+	init_debug("ipc blob size        = %d\n", blob_sizes.lbs_ipc);
+	init_debug("msg_msg blob size    = %d\n", blob_sizes.lbs_msg_msg);
+	init_debug("superblock blob size = %d\n", blob_sizes.lbs_superblock);
+	init_debug("task blob size       = %d\n", blob_sizes.lbs_task);
 
 	/*
 	 * Create any kmem_caches needed for blobs
@@ -670,6 +672,27 @@ static void __init lsm_early_task(struct task_struct *task)
 		panic("%s: Early task alloc failed.\n", __func__);
 }
 
+/**
+ * lsm_superblock_alloc - allocate a composite superblock blob
+ * @sb: the superblock that needs a blob
+ *
+ * Allocate the superblock blob for all the modules
+ *
+ * Returns 0, or -ENOMEM if memory can't be allocated.
+ */
+static int lsm_superblock_alloc(struct super_block *sb)
+{
+	if (blob_sizes.lbs_superblock == 0) {
+		sb->s_security = NULL;
+		return 0;
+	}
+
+	sb->s_security = kzalloc(blob_sizes.lbs_superblock, GFP_KERNEL);
+	if (sb->s_security == NULL)
+		return -ENOMEM;
+	return 0;
+}
+
 /*
  * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and
  * can be accessed with:
@@ -867,12 +890,21 @@ int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *
 
 int security_sb_alloc(struct super_block *sb)
 {
-	return call_int_hook(sb_alloc_security, 0, sb);
+	int rc = lsm_superblock_alloc(sb);
+
+	if (unlikely(rc))
+		return rc;
+	rc = call_int_hook(sb_alloc_security, 0, sb);
+	if (unlikely(rc))
+		security_sb_free(sb);
+	return rc;
 }
 
 void security_sb_free(struct super_block *sb)
 {
 	call_void_hook(sb_free_security, sb);
+	kfree(sb->s_security);
+	sb->s_security = NULL;
 }
 
 void security_free_mnt_opts(void **mnt_opts)
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index af2994adf9dd..ba27ddc5e38b 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -322,7 +322,7 @@ static void inode_free_security(struct inode *inode)
 
 	if (!isec)
 		return;
-	sbsec = inode->i_sb->s_security;
+	sbsec = selinux_superblock(inode->i_sb);
 	/*
 	 * As not all inode security structures are in a list, we check for
 	 * empty list outside of the lock to make sure that we won't waste
@@ -340,13 +340,6 @@ static void inode_free_security(struct inode *inode)
 	}
 }
 
-static void superblock_free_security(struct super_block *sb)
-{
-	struct superblock_security_struct *sbsec = sb->s_security;
-	sb->s_security = NULL;
-	kfree(sbsec);
-}
-
 struct selinux_mnt_opts {
 	const char *fscontext, *context, *rootcontext, *defcontext;
 };
@@ -458,7 +451,7 @@ static int selinux_is_genfs_special_handling(struct super_block *sb)
 
 static int selinux_is_sblabel_mnt(struct super_block *sb)
 {
-	struct superblock_security_struct *sbsec = sb->s_security;
+	struct superblock_security_struct *sbsec = selinux_superblock(sb);
 
 	/*
 	 * IMPORTANT: Double-check logic in this function when adding a new
@@ -535,7 +528,7 @@ static int sb_check_xattr_support(struct super_block *sb)
 
 static int sb_finish_set_opts(struct super_block *sb)
 {
-	struct superblock_security_struct *sbsec = sb->s_security;
+	struct superblock_security_struct *sbsec = selinux_superblock(sb);
 	struct dentry *root = sb->s_root;
 	struct inode *root_inode = d_backing_inode(root);
 	int rc = 0;
@@ -626,7 +619,7 @@ static int selinux_set_mnt_opts(struct super_block *sb,
 				unsigned long *set_kern_flags)
 {
 	const struct cred *cred = current_cred();
-	struct superblock_security_struct *sbsec = sb->s_security;
+	struct superblock_security_struct *sbsec = selinux_superblock(sb);
 	struct dentry *root = sb->s_root;
 	struct selinux_mnt_opts *opts = mnt_opts;
 	struct inode_security_struct *root_isec;
@@ -863,8 +856,8 @@ static int selinux_set_mnt_opts(struct super_block *sb,
 static int selinux_cmp_sb_context(const struct super_block *oldsb,
 				    const struct super_block *newsb)
 {
-	struct superblock_security_struct *old = oldsb->s_security;
-	struct superblock_security_struct *new = newsb->s_security;
+	struct superblock_security_struct *old = selinux_superblock(oldsb);
+	struct superblock_security_struct *new = selinux_superblock(newsb);
 	char oldflags = old->flags & SE_MNTMASK;
 	char newflags = new->flags & SE_MNTMASK;
 
@@ -896,8 +889,9 @@ static int selinux_sb_clone_mnt_opts(const struct super_block *oldsb,
 					unsigned long *set_kern_flags)
 {
 	int rc = 0;
-	const struct superblock_security_struct *oldsbsec = oldsb->s_security;
-	struct superblock_security_struct *newsbsec = newsb->s_security;
+	const struct superblock_security_struct *oldsbsec =
+						selinux_superblock(oldsb);
+	struct superblock_security_struct *newsbsec = selinux_superblock(newsb);
 
 	int set_fscontext =	(oldsbsec->flags & FSCONTEXT_MNT);
 	int set_context =	(oldsbsec->flags & CONTEXT_MNT);
@@ -1076,7 +1070,7 @@ static int show_sid(struct seq_file *m, u32 sid)
 
 static int selinux_sb_show_options(struct seq_file *m, struct super_block *sb)
 {
-	struct superblock_security_struct *sbsec = sb->s_security;
+	struct superblock_security_struct *sbsec = selinux_superblock(sb);
 	int rc;
 
 	if (!(sbsec->flags & SE_SBINITIALIZED))
@@ -1427,7 +1421,7 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent
 	if (isec->sclass == SECCLASS_FILE)
 		isec->sclass = inode_mode_to_security_class(inode->i_mode);
 
-	sbsec = inode->i_sb->s_security;
+	sbsec = selinux_superblock(inode->i_sb);
 	if (!(sbsec->flags & SE_SBINITIALIZED)) {
 		/* Defer initialization until selinux_complete_init,
 		   after the initial policy is loaded and the security
@@ -1778,7 +1772,8 @@ selinux_determine_inode_label(const struct task_security_struct *tsec,
 				 const struct qstr *name, u16 tclass,
 				 u32 *_new_isid)
 {
-	const struct superblock_security_struct *sbsec = dir->i_sb->s_security;
+	const struct superblock_security_struct *sbsec =
+						selinux_superblock(dir->i_sb);
 
 	if ((sbsec->flags & SE_SBINITIALIZED) &&
 	    (sbsec->behavior == SECURITY_FS_USE_MNTPOINT)) {
@@ -1809,7 +1804,7 @@ static int may_create(struct inode *dir,
 	int rc;
 
 	dsec = inode_security(dir);
-	sbsec = dir->i_sb->s_security;
+	sbsec = selinux_superblock(dir->i_sb);
 
 	sid = tsec->sid;
 
@@ -1958,7 +1953,7 @@ static int superblock_has_perm(const struct cred *cred,
 	struct superblock_security_struct *sbsec;
 	u32 sid = cred_sid(cred);
 
-	sbsec = sb->s_security;
+	sbsec = selinux_superblock(sb);
 	return avc_has_perm(&selinux_state,
 			    sid, sbsec->sid, SECCLASS_FILESYSTEM, perms, ad);
 }
@@ -2587,11 +2582,7 @@ static void selinux_bprm_committed_creds(struct linux_binprm *bprm)
 
 static int selinux_sb_alloc_security(struct super_block *sb)
 {
-	struct superblock_security_struct *sbsec;
-
-	sbsec = kzalloc(sizeof(struct superblock_security_struct), GFP_KERNEL);
-	if (!sbsec)
-		return -ENOMEM;
+	struct superblock_security_struct *sbsec = selinux_superblock(sb);
 
 	mutex_init(&sbsec->lock);
 	INIT_LIST_HEAD(&sbsec->isec_head);
@@ -2599,16 +2590,10 @@ static int selinux_sb_alloc_security(struct super_block *sb)
 	sbsec->sid = SECINITSID_UNLABELED;
 	sbsec->def_sid = SECINITSID_FILE;
 	sbsec->mntpoint_sid = SECINITSID_UNLABELED;
-	sb->s_security = sbsec;
 
 	return 0;
 }
 
-static void selinux_sb_free_security(struct super_block *sb)
-{
-	superblock_free_security(sb);
-}
-
 static inline int opt_len(const char *s)
 {
 	bool open_quote = false;
@@ -2687,7 +2672,7 @@ static int selinux_sb_eat_lsm_opts(char *options, void **mnt_opts)
 static int selinux_sb_remount(struct super_block *sb, void *mnt_opts)
 {
 	struct selinux_mnt_opts *opts = mnt_opts;
-	struct superblock_security_struct *sbsec = sb->s_security;
+	struct superblock_security_struct *sbsec = selinux_superblock(sb);
 	u32 sid;
 	int rc;
 
@@ -2925,7 +2910,7 @@ static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
 	int rc;
 	char *context;
 
-	sbsec = dir->i_sb->s_security;
+	sbsec = selinux_superblock(dir->i_sb);
 
 	newsid = tsec->create_sid;
 
@@ -3226,7 +3211,7 @@ static int selinux_inode_setxattr(struct dentry *dentry, const char *name,
 	if (!selinux_initialized(&selinux_state))
 		return (inode_owner_or_capable(inode) ? 0 : -EPERM);
 
-	sbsec = inode->i_sb->s_security;
+	sbsec = selinux_superblock(inode->i_sb);
 	if (!(sbsec->flags & SBLABEL_MNT))
 		return -EOPNOTSUPP;
 
@@ -3468,13 +3453,14 @@ static int selinux_inode_setsecurity(struct inode *inode, const char *name,
 				     const void *value, size_t size, int flags)
 {
 	struct inode_security_struct *isec = inode_security_novalidate(inode);
-	struct superblock_security_struct *sbsec = inode->i_sb->s_security;
+	struct superblock_security_struct *sbsec;
 	u32 newsid;
 	int rc;
 
 	if (strcmp(name, XATTR_SELINUX_SUFFIX))
 		return -EOPNOTSUPP;
 
+	sbsec = selinux_superblock(inode->i_sb);
 	if (!(sbsec->flags & SBLABEL_MNT))
 		return -EOPNOTSUPP;
 
@@ -6970,6 +6956,7 @@ struct lsm_blob_sizes selinux_blob_sizes __lsm_ro_after_init = {
 	.lbs_inode = sizeof(struct inode_security_struct),
 	.lbs_ipc = sizeof(struct ipc_security_struct),
 	.lbs_msg_msg = sizeof(struct msg_security_struct),
+	.lbs_superblock = sizeof(struct superblock_security_struct),
 };
 
 #ifdef CONFIG_PERF_EVENTS
@@ -7070,7 +7057,6 @@ static struct security_hook_list selinux_hooks[] __lsm_ro_after_init = {
 	LSM_HOOK_INIT(bprm_committing_creds, selinux_bprm_committing_creds),
 	LSM_HOOK_INIT(bprm_committed_creds, selinux_bprm_committed_creds),
 
-	LSM_HOOK_INIT(sb_free_security, selinux_sb_free_security),
 	LSM_HOOK_INIT(sb_free_mnt_opts, selinux_free_mnt_opts),
 	LSM_HOOK_INIT(sb_remount, selinux_sb_remount),
 	LSM_HOOK_INIT(sb_kern_mount, selinux_sb_kern_mount),
diff --git a/security/selinux/include/objsec.h b/security/selinux/include/objsec.h
index ca4d7ab6a835..2953132408bf 100644
--- a/security/selinux/include/objsec.h
+++ b/security/selinux/include/objsec.h
@@ -188,4 +188,10 @@ static inline u32 current_sid(void)
 	return tsec->sid;
 }
 
+static inline struct superblock_security_struct *selinux_superblock(
+					const struct super_block *superblock)
+{
+	return superblock->s_security + selinux_blob_sizes.lbs_superblock;
+}
+
 #endif /* _SELINUX_OBJSEC_H_ */
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index 3438d0130378..9cea2e6c809f 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -47,6 +47,7 @@
 #include <linux/sched.h>
 #include <linux/audit.h>
 #include <linux/vmalloc.h>
+#include <linux/lsm_hooks.h>
 #include <net/netlabel.h>
 
 #include "flask.h"
@@ -2875,7 +2876,7 @@ int security_fs_use(struct selinux_state *state, struct super_block *sb)
 	struct sidtab *sidtab;
 	int rc = 0;
 	struct ocontext *c;
-	struct superblock_security_struct *sbsec = sb->s_security;
+	struct superblock_security_struct *sbsec = selinux_superblock(sb);
 	const char *fstype = sb->s_type->name;
 
 	if (!selinux_initialized(state)) {
diff --git a/security/smack/smack.h b/security/smack/smack.h
index a9768b12716b..7077b18c79ec 100644
--- a/security/smack/smack.h
+++ b/security/smack/smack.h
@@ -357,6 +357,12 @@ static inline struct smack_known **smack_ipc(const struct kern_ipc_perm *ipc)
 	return ipc->security + smack_blob_sizes.lbs_ipc;
 }
 
+static inline struct superblock_smack *smack_superblock(
+					const struct super_block *superblock)
+{
+	return superblock->s_security + smack_blob_sizes.lbs_superblock;
+}
+
 /*
  * Is the directory transmuting?
  */
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index f69c3dd9a0c6..767084dc2c29 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -535,12 +535,7 @@ static int smack_syslog(int typefrom_file)
  */
 static int smack_sb_alloc_security(struct super_block *sb)
 {
-	struct superblock_smack *sbsp;
-
-	sbsp = kzalloc(sizeof(struct superblock_smack), GFP_KERNEL);
-
-	if (sbsp == NULL)
-		return -ENOMEM;
+	struct superblock_smack *sbsp = smack_superblock(sb);
 
 	sbsp->smk_root = &smack_known_floor;
 	sbsp->smk_default = &smack_known_floor;
@@ -549,22 +544,10 @@ static int smack_sb_alloc_security(struct super_block *sb)
 	/*
 	 * SMK_SB_INITIALIZED will be zero from kzalloc.
 	 */
-	sb->s_security = sbsp;
 
 	return 0;
 }
 
-/**
- * smack_sb_free_security - free a superblock blob
- * @sb: the superblock getting the blob
- *
- */
-static void smack_sb_free_security(struct super_block *sb)
-{
-	kfree(sb->s_security);
-	sb->s_security = NULL;
-}
-
 struct smack_mnt_opts {
 	const char *fsdefault, *fsfloor, *fshat, *fsroot, *fstransmute;
 };
@@ -772,7 +755,7 @@ static int smack_set_mnt_opts(struct super_block *sb,
 {
 	struct dentry *root = sb->s_root;
 	struct inode *inode = d_backing_inode(root);
-	struct superblock_smack *sp = sb->s_security;
+	struct superblock_smack *sp = smack_superblock(sb);
 	struct inode_smack *isp;
 	struct smack_known *skp;
 	struct smack_mnt_opts *opts = mnt_opts;
@@ -871,7 +854,7 @@ static int smack_set_mnt_opts(struct super_block *sb,
  */
 static int smack_sb_statfs(struct dentry *dentry)
 {
-	struct superblock_smack *sbp = dentry->d_sb->s_security;
+	struct superblock_smack *sbp = smack_superblock(dentry->d_sb);
 	int rc;
 	struct smk_audit_info ad;
 
@@ -905,7 +888,7 @@ static int smack_bprm_creds_for_exec(struct linux_binprm *bprm)
 	if (isp->smk_task == NULL || isp->smk_task == bsp->smk_task)
 		return 0;
 
-	sbsp = inode->i_sb->s_security;
+	sbsp = smack_superblock(inode->i_sb);
 	if ((sbsp->smk_flags & SMK_SB_UNTRUSTED) &&
 	    isp->smk_task != sbsp->smk_root)
 		return 0;
@@ -1157,7 +1140,7 @@ static int smack_inode_rename(struct inode *old_inode,
  */
 static int smack_inode_permission(struct inode *inode, int mask)
 {
-	struct superblock_smack *sbsp = inode->i_sb->s_security;
+	struct superblock_smack *sbsp = smack_superblock(inode->i_sb);
 	struct smk_audit_info ad;
 	int no_block = mask & MAY_NOT_BLOCK;
 	int rc;
@@ -1398,7 +1381,7 @@ static int smack_inode_removexattr(struct dentry *dentry, const char *name)
 	 */
 	if (strcmp(name, XATTR_NAME_SMACK) == 0) {
 		struct super_block *sbp = dentry->d_sb;
-		struct superblock_smack *sbsp = sbp->s_security;
+		struct superblock_smack *sbsp = smack_superblock(sbp);
 
 		isp->smk_inode = sbsp->smk_default;
 	} else if (strcmp(name, XATTR_NAME_SMACKEXEC) == 0)
@@ -1668,7 +1651,7 @@ static int smack_mmap_file(struct file *file,
 	isp = smack_inode(file_inode(file));
 	if (isp->smk_mmap == NULL)
 		return 0;
-	sbsp = file_inode(file)->i_sb->s_security;
+	sbsp = smack_superblock(file_inode(file)->i_sb);
 	if (sbsp->smk_flags & SMK_SB_UNTRUSTED &&
 	    isp->smk_mmap != sbsp->smk_root)
 		return -EACCES;
@@ -3283,7 +3266,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
 		return;
 
 	sbp = inode->i_sb;
-	sbsp = sbp->s_security;
+	sbsp = smack_superblock(sbp);
 	/*
 	 * We're going to use the superblock default label
 	 * if there's no label on the file.
@@ -4696,6 +4679,7 @@ struct lsm_blob_sizes smack_blob_sizes __lsm_ro_after_init = {
 	.lbs_inode = sizeof(struct inode_smack),
 	.lbs_ipc = sizeof(struct smack_known *),
 	.lbs_msg_msg = sizeof(struct smack_known *),
+	.lbs_superblock = sizeof(struct superblock_smack),
 };
 
 static struct security_hook_list smack_hooks[] __lsm_ro_after_init = {
@@ -4707,7 +4691,6 @@ static struct security_hook_list smack_hooks[] __lsm_ro_after_init = {
 	LSM_HOOK_INIT(fs_context_parse_param, smack_fs_context_parse_param),
 
 	LSM_HOOK_INIT(sb_alloc_security, smack_sb_alloc_security),
-	LSM_HOOK_INIT(sb_free_security, smack_sb_free_security),
 	LSM_HOOK_INIT(sb_free_mnt_opts, smack_free_mnt_opts),
 	LSM_HOOK_INIT(sb_eat_lsm_opts, smack_sb_eat_lsm_opts),
 	LSM_HOOK_INIT(sb_statfs, smack_sb_statfs),
