svn commit: r330275 - stable/11/sys/x86/x86

[Konstantin Belousov]

Author: kib
Date: Fri Mar  2 10:57:46 2018
New Revision: 330275
URL: https://svnweb.freebsd.org/changeset/base/330275

Log:
  MFC r329864:
  Do not return out of bound pointers from intr_lookup_source().

Modified:
  stable/11/sys/x86/x86/intr_machdep.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/x86/x86/intr_machdep.c
==============================================================================
--- stable/11/sys/x86/x86/intr_machdep.c	Fri Mar  2 08:59:53 2018	(r330274)
+++ stable/11/sys/x86/x86/intr_machdep.c	Fri Mar  2 10:57:46 2018	(r330275)
@@ -167,6 +167,8 @@ struct intsrc *
 intr_lookup_source(int vector)
 {
 
+	if (vector < 0 || vector >= nitems(interrupt_sources))
+		return (NULL);
 	return (interrupt_sources[vector]);
 }