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From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Date: Mon, 7 Sep 2009 11:38:44 +0000 (UTC)
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Cc: 
Subject: svn commit: r196919 -
	head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs
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Author: pjd
Date: Mon Sep  7 11:38:43 2009
New Revision: 196919
URL: http://svn.freebsd.org/changeset/base/196919

Log:
  bzero() on-stack argument, so mutex_init() won't misinterpret that the
  lock is already initialized if we have some garbage on the stack.
  
  PR:		kern/135480
  Reported by:	Emil Mikulic <emikulic@gmail.com>
  MFC after:	3 days

Modified:
  head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c

Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c	Mon Sep  7 10:15:50 2009	(r196918)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c	Mon Sep  7 11:38:43 2009	(r196919)
@@ -1419,6 +1419,7 @@ dsl_dataset_drain_refs(dsl_dataset_t *ds
 {
 	struct refsarg arg;
 
+	bzero(&arg, sizeof(arg));
 	mutex_init(&arg.lock, NULL, MUTEX_DEFAULT, NULL);
 	cv_init(&arg.cv, NULL, CV_DEFAULT, NULL);
 	arg.gone = FALSE;