[src/trunk]: src/sys/dev/pci Reject unaligned PCI config register ioctl reque...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/cfa748c45147
branches:  trunk
changeset: 796280:cfa748c45147
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Wed May 28 04:41:52 2014 +0000

description:
Reject unaligned PCI config register ioctl requests before we kassert.

diffstat:

 sys/dev/pci/pci_usrreq.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r b2608567c28b -r cfa748c45147 sys/dev/pci/pci_usrreq.c
--- a/sys/dev/pci/pci_usrreq.c  Wed May 28 03:17:42 2014 +0000
+++ b/sys/dev/pci/pci_usrreq.c  Wed May 28 04:41:52 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pci_usrreq.c,v 1.25 2014/03/16 05:20:28 dholland Exp $ */
+/*     $NetBSD: pci_usrreq.c,v 1.26 2014/05/28 04:41:52 riastradh Exp $        */
 
 /*
  * Copyright 2001 Wasabi Systems, Inc.
@@ -40,7 +40,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pci_usrreq.c,v 1.25 2014/03/16 05:20:28 dholland Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pci_usrreq.c,v 1.26 2014/05/28 04:41:52 riastradh Exp $");
 
 #include <sys/param.h>
 #include <sys/conf.h>
@@ -83,7 +83,7 @@
        case PCI_IOC_BDF_CFGWRITE:
                bdfr = data;
                if (bdfr->bus > 255 || bdfr->device >= sc->sc_maxndevs ||
-                   bdfr->function > 7)
+                   bdfr->function > 7 || ISSET(bdfr->cfgreg.reg, 3))
                        return EINVAL;
                tag = pci_make_tag(sc->sc_pc, bdfr->bus, bdfr->device,
                    bdfr->function);