From 7c1a36d4ff7eb709d82c7f4808b2e128ca0b62e5 Mon Sep 17 00:00:00 2001
From: heyabinghyb <heyabing@h-partners.com>
Date: Mon, 28 Jul 2025 18:54:17 +0800
Subject: [PATCH] checknull

Signed-off-by: heyabinghyb <heyabing@h-partners.com>
---
 .../server/domain/device/src/audio_device_common.cpp          | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/services/audio_policy/server/domain/device/src/audio_device_common.cpp b/services/audio_policy/server/domain/device/src/audio_device_common.cpp
index ac12e5dd1c..45b5826ca3 100644
--- a/services/audio_policy/server/domain/device/src/audio_device_common.cpp
+++ b/services/audio_policy/server/domain/device/src/audio_device_common.cpp
@@ -207,6 +207,10 @@ std::vector<std::shared_ptr<AudioDeviceDescriptor>> AudioDeviceCommon::GetPrefer
 
     if (networkId == LOCAL_NETWORK_ID) {
         std::shared_ptr<AudioDeviceDescriptor> desc = audioRouterCenter_.FetchInputDevice(captureInfo.sourceType, -1);
+        if (desc == nullptr) {
+            AUDIO_ERR_LOG("desc is nullptr");
+            return {};
+        }
         if (desc->deviceType_ == DEVICE_TYPE_NONE && (captureInfo.sourceType == SOURCE_TYPE_PLAYBACK_CAPTURE ||
             captureInfo.sourceType == SOURCE_TYPE_REMOTE_CAST)) {
             desc->deviceType_ = DEVICE_TYPE_INVALID;
-- 
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