Module Name: src
Committed By: christos
Date: Fri Dec 30 19:01:07 UTC 2011
Modified Files:
src/sys/uvm: uvm_meter.c
Log Message:
prevent kernel from writing more than userland passed.
To generate a diff of this commit:
cvs rdiff -u -r1.57 -r1.58 src/sys/uvm/uvm_meter.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/uvm/uvm_meter.c
diff -u src/sys/uvm/uvm_meter.c:1.57 src/sys/uvm/uvm_meter.c:1.58
--- src/sys/uvm/uvm_meter.c:1.57 Sat Nov 12 21:10:40 2011
+++ src/sys/uvm/uvm_meter.c Fri Dec 30 14:01:07 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: uvm_meter.c,v 1.57 2011/11/13 02:10:40 christos Exp $ */
+/* $NetBSD: uvm_meter.c,v 1.58 2011/12/30 19:01:07 christos Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -36,7 +36,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uvm_meter.c,v 1.57 2011/11/13 02:10:40 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uvm_meter.c,v 1.58 2011/12/30 19:01:07 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -180,6 +180,8 @@ sysctl_vm_uvmexp2(SYSCTLFN_ARGS)
node = *rnode;
node.sysctl_data = &u;
node.sysctl_size = sizeof(u);
+ if (oldlenp)
+ node.sysctl_size = min(*oldlenp, node.sysctl_size);
return (sysctl_lookup(SYSCTLFN_CALL(&node)));
}
