mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-10-01 05:35:54 +00:00
32 lines
1.2 KiB
Diff
32 lines
1.2 KiB
Diff
From 7a86f369594a0b6567820b77d441e778e6adb8a7 Mon Sep 17 00:00:00 2001
|
|
From: Rajkumar Subbiah <rsubbia@codeaurora.org>
|
|
Date: Mon, 15 May 2017 15:17:14 -0400
|
|
Subject: [PATCH] msm: mdss: Fix potential dereferencing of null pointer
|
|
|
|
During atomic commit on a writeback panel, there is a possibility
|
|
of deferencing a NULL pointer if the configuration changes before
|
|
the commit. This change adds a NULL pointer check to avoid it.
|
|
|
|
Bug: 36731152
|
|
Change-Id: I56d0efad40992b6f87c81e5eab93cf0f24f6f524
|
|
Signed-off-by: Rajkumar Subbiah <rsubbia@codeaurora.org>
|
|
---
|
|
drivers/video/msm/mdss/mdss_fb.c | 4 ++++
|
|
1 file changed, 4 insertions(+)
|
|
|
|
diff --git a/drivers/video/msm/mdss/mdss_fb.c b/drivers/video/msm/mdss/mdss_fb.c
|
|
index 86f380e8a845b..8e02cbf782e0f 100644
|
|
--- a/drivers/video/msm/mdss/mdss_fb.c
|
|
+++ b/drivers/video/msm/mdss/mdss_fb.c
|
|
@@ -3302,6 +3302,10 @@ int mdss_fb_atomic_commit(struct fb_info *info,
|
|
MSMFB_ATOMIC_COMMIT, true, false);
|
|
if (mfd->panel.type == WRITEBACK_PANEL) {
|
|
output_layer = commit_v1->output_layer;
|
|
+ if (!output_layer) {
|
|
+ pr_err("Output layer is null\n");
|
|
+ goto end;
|
|
+ }
|
|
wb_change = !mdss_fb_is_wb_config_same(mfd,
|
|
commit_v1->output_layer);
|
|
if (wb_change) {
|