From 04cc7c2128afe4e88a710546efbcbda0de5851d4 Mon Sep 17 00:00:00 2001
From: Ashish Kumar Dhanotiya <adhanoti@codeaurora.org>
Date: Fri, 11 May 2018 14:43:10 +0530
Subject: [PATCH] qcacld-3.0: Avoid NULL pointer access in apf read memory cb

Add a check to validate hdd adapter to avoid NULL pointer
dereference.

Change-Id: I06d883c213e10b620d8af3f61baaeb483b078bf1
CRs-Fixed: 2240482
---
 core/hdd/src/wlan_hdd_apf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/core/hdd/src/wlan_hdd_apf.c b/core/hdd/src/wlan_hdd_apf.c
index 0e16fdf3c11c..1df7732377bb 100644
--- a/core/hdd/src/wlan_hdd_apf.c
+++ b/core/hdd/src/wlan_hdd_apf.c
@@ -452,6 +452,8 @@ hdd_apf_read_memory_callback(void *hdd_context,
 	}
 
 	adapter = hdd_get_adapter_by_vdev(hdd_ctx, evt->vdev_id);
+	if (hdd_validate_adapter(adapter))
+		return;
 	context = &adapter->apf_context;
 
 	if (context->magic != APF_CONTEXT_MAGIC) {