[src/trunk]: src/sys/dev Fix a resource leak on error handling in audio_alloc...

[isaki <isaki%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/65fda9352e1f
branches:  trunk
changeset: 825752:65fda9352e1f
user:      isaki <isaki%NetBSD.org@localhost>
date:      Sat Jul 29 06:33:45 2017 +0000

description:
Fix a resource leak on error handling in audio_alloc_ring().

diffstat:

 sys/dev/audio.c |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r 81724d4a433a -r 65fda9352e1f sys/dev/audio.c
--- a/sys/dev/audio.c   Sat Jul 29 06:30:56 2017 +0000
+++ b/sys/dev/audio.c   Sat Jul 29 06:33:45 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: audio.c,v 1.379 2017/07/29 06:30:56 isaki Exp $        */
+/*     $NetBSD: audio.c,v 1.380 2017/07/29 06:33:45 isaki Exp $        */
 
 /*-
  * Copyright (c) 2016 Nathanial Sloss <nathanialsloss%yahoo.com.au@localhost>
@@ -148,7 +148,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.379 2017/07/29 06:30:56 isaki Exp $");
+__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.380 2017/07/29 06:33:45 isaki Exp $");
 
 #ifdef _KERNEL_OPT
 #include "audio.h"
@@ -1228,6 +1228,7 @@
                    false, 0);
                if (error) {
                        uvm_unmap(kernel_map, vstart, vstart + vsize);
+                       uao_detach(r->uobj);
                        r->uobj = NULL;         /* paranoia */
                        return error;
                }