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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Mon, 21 Nov 2016 10:44:40 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org
Subject: svn commit: r308918 - stable/11/sys/kern
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Author: kib
Date: Mon Nov 21 10:44:40 2016
New Revision: 308918
URL: https://svnweb.freebsd.org/changeset/base/308918

Log:
  MFC r308642:
  Initialize reserved bytes in struct mq_attr.
  
  PR:	214488

Modified:
  stable/11/sys/kern/uipc_mqueue.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/kern/uipc_mqueue.c
==============================================================================
--- stable/11/sys/kern/uipc_mqueue.c	Mon Nov 21 10:36:25 2016	(r308917)
+++ stable/11/sys/kern/uipc_mqueue.c	Mon Nov 21 10:44:40 2016	(r308918)
@@ -2242,10 +2242,10 @@ sys_kmq_setattr(struct thread *td, struc
 	}
 	error = kern_kmq_setattr(td, uap->mqd, uap->attr != NULL ? &attr : NULL,
 	    &oattr);
-	if (error != 0)
-		return (error);
-	if (uap->oattr != NULL)
+	if (error == 0 && uap->oattr != NULL) {
+		bzero(oattr.__reserved, sizeof(oattr.__reserved));
 		error = copyout(&oattr, uap->oattr, sizeof(oattr));
+	}
 	return (error);
 }
 
@@ -2759,10 +2759,9 @@ freebsd32_kmq_setattr(struct thread *td,
 	}
 	error = kern_kmq_setattr(td, uap->mqd, uap->attr != NULL ? &attr : NULL,
 	    &oattr);
-	if (error != 0)
-		return (error);
-	if (uap->oattr != NULL) {
+	if (error == 0 && uap->oattr != NULL) {
 		mq_attr_to32(&oattr, &oattr32);
+		bzero(oattr32.__reserved, sizeof(oattr32.__reserved));
 		error = copyout(&oattr32, uap->oattr, sizeof(oattr32));
 	}
 	return (error);