[src/trunk]: src/sys/kern Memory leak, found by Mootja. By the way, we probab...

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

details:   https://anonhg.NetBSD.org/src/rev/4ee711a0b1c4
branches:  trunk
changeset: 818781:4ee711a0b1c4
user:      maxv <maxv%NetBSD.org@localhost>
date:      Mon Oct 31 15:08:45 2016 +0000

description:
Memory leak, found by Mootja. By the way, we probably shouldn't be
returning -1 here.

diffstat:

 sys/kern/uipc_sem.c |  10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diffs (32 lines):

diff -r a362d2422923 -r 4ee711a0b1c4 sys/kern/uipc_sem.c
--- a/sys/kern/uipc_sem.c       Mon Oct 31 15:05:05 2016 +0000
+++ b/sys/kern/uipc_sem.c       Mon Oct 31 15:08:45 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uipc_sem.c,v 1.46 2016/06/10 23:24:33 christos Exp $   */
+/*     $NetBSD: uipc_sem.c,v 1.47 2016/10/31 15:08:45 maxv Exp $       */
 
 /*-
  * Copyright (c) 2011 The NetBSD Foundation, Inc.
@@ -60,7 +60,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uipc_sem.c,v 1.46 2016/06/10 23:24:33 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uipc_sem.c,v 1.47 2016/10/31 15:08:45 maxv Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -335,9 +335,11 @@
        }
 
        if (atomic_inc_uint_nv(&l->l_proc->p_nsems) > SEM_NSEMS_MAX) {
-               atomic_dec_uint(&l->l_proc->p_nsems);
+               atomic_dec_uint(&l->l_proc->p_nsems);
+               if (kname != NULL)
+                       kmem_free(kname, len);
                return -1;
-       }
+       }
 
        ks = kmem_zalloc(sizeof(ksem_t), KM_SLEEP);
        mutex_init(&ks->ks_lock, MUTEX_DEFAULT, IPL_NONE);