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[src/trunk]: src/sys/external/bsd/drm2/dist/drm Avoid null pointer dereferenc...
details: https://anonhg.NetBSD.org/src/rev/d217ef2def75
branches: trunk
changeset: 846210:d217ef2def75
user: msaitoh <msaitoh%NetBSD.org@localhost>
date: Tue Nov 05 04:09:51 2019 +0000
description:
Avoid null pointer dereference found by kUBSan with "member access within
null pointer of type 'struct drm_fb_helper_crtc'".
diffstat:
sys/external/bsd/drm2/dist/drm/drm_fb_helper.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diffs (29 lines):
diff -r fc403e16b100 -r d217ef2def75 sys/external/bsd/drm2/dist/drm/drm_fb_helper.c
--- a/sys/external/bsd/drm2/dist/drm/drm_fb_helper.c Mon Nov 04 15:12:10 2019 +0000
+++ b/sys/external/bsd/drm2/dist/drm/drm_fb_helper.c Tue Nov 05 04:09:51 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: drm_fb_helper.c,v 1.12 2018/08/27 13:37:21 riastradh Exp $ */
+/* $NetBSD: drm_fb_helper.c,v 1.13 2019/11/05 04:09:51 msaitoh Exp $ */
/*
* Copyright (c) 2006-2009 Red Hat Inc.
@@ -30,7 +30,7 @@
* Jesse Barnes <jesse.barnes%intel.com@localhost>
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: drm_fb_helper.c,v 1.12 2018/08/27 13:37:21 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: drm_fb_helper.c,v 1.13 2019/11/05 04:09:51 msaitoh Exp $");
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -2086,9 +2086,9 @@
struct drm_display_mode *mode = modes[i];
struct drm_fb_helper_crtc *fb_crtc = crtcs[i];
struct drm_fb_offset *offset = &offsets[i];
- modeset = &fb_crtc->mode_set;
if (mode && fb_crtc) {
+ modeset = &fb_crtc->mode_set;
DRM_DEBUG_KMS("desired mode %s set on crtc %d (%d,%d)\n",
mode->name, fb_crtc->mode_set.crtc->base.id, offset->x, offset->y);
fb_crtc->desired_mode = mode;
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