BACKPORT: Smack: pipefs fix in smack_d_instantiate

This fix writes the task label when
smack_d_instantiate is called, before the
label of the superblock was written on the
pipe's inode.

Signed-off-by: Roman Kubiak <r.kubiak@samsung.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
(cherry-picked from upstream 8da4aba5bf9869f58d2a6bb30daaf54b2fa72569)

diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 6405066d38a3923a49d672a5b81a88534708fd52..d8869a13d0807da3e741be352573590d528c8bde 100644 (file)
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -3369,6 +3369,9 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
                         */
                        isp->smk_inode = smk_of_current();
                        break;
+               case PIPEFS_MAGIC:
+                       isp->smk_inode = smk_of_current();
+                       break;
                default:
                        isp->smk_inode = sbsp->smk_root;
                        break;