svn commit: r276850 - head/sys/kern

[John Baldwin]

Author: jhb
Date: Thu Jan  8 19:11:14 2015
New Revision: 276850
URL: https://svnweb.freebsd.org/changeset/base/276850

Log:
  Reject attempts to read the cpuset mask of a negative domain ID.

Modified:
  head/sys/kern/kern_cpuset.c

Modified: head/sys/kern/kern_cpuset.c
==============================================================================
--- head/sys/kern/kern_cpuset.c	Thu Jan  8 18:53:11 2015	(r276849)
+++ head/sys/kern/kern_cpuset.c	Thu Jan  8 19:11:14 2015	(r276850)
@@ -1118,7 +1118,7 @@ sys_cpuset_getaffinity(struct thread *td
 			error = intr_getaffinity(uap->id, mask);
 			break;
 		case CPU_WHICH_DOMAIN:
-			if (uap->id >= vm_ndomains)
+			if (uap->id < 0 || uap->id >= vm_ndomains)
 				error = ESRCH;
 			else
 				CPU_COPY(&cpuset_domain[uap->id], mask);