Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit

Pull audit fixes from Paul Moore:
 "Four patches to fix various problems with the audit subsystem, all are
  fairly small and straightforward.

  One patch fixes a problem where we weren't using the correct gfp
  allocation flags (GFP_KERNEL regardless of context, oops), one patch
  fixes a problem with old userspace tools (this was broken for a
  while), one patch fixes a problem where we weren't recording pathnames
  correctly, and one fixes a problem with PID based filters.

  In general I don't think there is anything controversial with this
  patchset, and it fixes some rather unfortunate bugs; the allocation
  flag one can be particularly scary looking for users"

* 'upstream' of git://git.infradead.org/users/pcmoore/audit:
  audit: restore AUDIT_LOGINUID unset ABI
  audit: correctly record file names with different path name types
  audit: use supplied gfp_mask from audit_buffer in kauditd_send_multicast_skb
  audit: don't attempt to lookup PIDs when changing PID filtering audit rules

kernel/auditsc.c

@@ -1877,12 +1877,18 @@ void __audit_inode(struct filename *name, const struct dentry *dentry,
 	}
 
 out_alloc:
-	/* unable to find the name from a previous getname(). Allocate a new
-	 * anonymous entry.
-	 */
-	n = audit_alloc_name(context, AUDIT_TYPE_NORMAL);
+	/* unable to find an entry with both a matching name and type */
+	n = audit_alloc_name(context, AUDIT_TYPE_UNKNOWN);
 	if (!n)
 		return;
+	if (name)
+		/* since name is not NULL we know there is already a matching
+		 * name record, see audit_getname(), so there must be a type
+		 * mismatch; reuse the string path since the original name
+		 * record will keep the string valid until we free it in
+		 * audit_free_names() */
+		n->name = name;
+
 out:
 	if (parent) {
 		n->name_len = n->name ? parent_len(n->name->name) : AUDIT_NAME_FULL;