evie/android_kernel_oneplus_msm8998
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msm: mdss: Add check to fix null pointer dereference

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In mdss_mdp_overlay_kickoff, the mixer_left can be accessed
without checking whether it is allocated or not which can
result in null pointer dereference. This is fixed
by adding a check to decide if mixer_left is NULL or not.

CRs-Fixed: 1070611

Change-Id: Iab4254a492b7b5930984dbb8ea91597a5506aca6
Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org>
This commit is contained in:
Krishna Manikandan 2016-12-13 13:54:05 +05:30
parent a80e267a8c
commit 61a2851465
1 changed files with 1 additions and 1 deletions
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2
drivers/video/fbdev/msm/mdss_mdp_overlay.c
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@ -2278,7 +2278,7 @@ int mdss_mdp_overlay_kickoff(struct msm_fb_data_type *mfd,
int ret = 0;
struct mdss_mdp_commit_cb commit_cb;
if (!ctl)
if (!ctl || !ctl->mixer_left)
return -ENODEV;
ATRACE_BEGIN(__func__);