diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index 02dc516..6665c43 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -1392,6 +1392,12 @@
     return af->getMicrophones(microphones);
 }
 
+status_t AudioSystem::setAudioHalPids(const std::vector<pid_t>& pids) {
+  const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
+  if (af == nullptr) return PERMISSION_DENIED;
+  return af->setAudioHalPids(pids);
+}
+
 status_t AudioSystem::getSurroundFormats(unsigned int *numSurroundFormats,
                                          audio_format_t *surroundFormats,
                                          bool *surroundFormatsEnabled,
diff --git a/media/libaudioclient/IAudioFlinger.cpp b/media/libaudioclient/IAudioFlinger.cpp
index 54ec684..90783eb 100644
--- a/media/libaudioclient/IAudioFlinger.cpp
+++ b/media/libaudioclient/IAudioFlinger.cpp
@@ -90,10 +90,12 @@
     SET_MASTER_BALANCE,
     GET_MASTER_BALANCE,
     SET_EFFECT_SUSPENDED,
+    SET_AUDIO_HAL_PIDS
 };
 
 #define MAX_ITEMS_PER_LIST 1024
 
+
 class BpAudioFlinger : public BpInterface<IAudioFlinger>
 {
 public:
@@ -900,6 +902,20 @@
         status = reply.readParcelableVector(microphones);
         return status;
     }
+    virtual status_t setAudioHalPids(const std::vector<pid_t>& pids)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAudioFlinger::getInterfaceDescriptor());
+        data.writeInt32(pids.size());
+        for (auto pid : pids) {
+            data.writeInt32(pid);
+        }
+        status_t status = remote()->transact(SET_AUDIO_HAL_PIDS, data, &reply);
+        if (status != NO_ERROR) {
+            return status;
+        }
+        return static_cast <status_t> (reply.readInt32());
+    }
 };
 
 IMPLEMENT_META_INTERFACE(AudioFlinger, "android.media.IAudioFlinger");
@@ -955,7 +971,8 @@
         case SET_MODE:
         case SET_MIC_MUTE:
         case SET_LOW_RAM_DEVICE:
-        case SYSTEM_READY: {
+        case SYSTEM_READY:
+        case SET_AUDIO_HAL_PIDS: {
             if (!isServiceUid(IPCThreadState::self()->getCallingUid())) {
                 ALOGW("%s: transaction %d received from PID %d unauthorized UID %d",
                       __func__, code, IPCThreadState::self()->getCallingPid(),
@@ -1542,6 +1559,31 @@
             }
             return NO_ERROR;
         }
+        case SET_AUDIO_HAL_PIDS: {
+            CHECK_INTERFACE(IAudioFlinger, data, reply);
+            std::vector<pid_t> pids;
+            int32_t size;
+            status_t status = data.readInt32(&size);
+            if (status != NO_ERROR) {
+                return status;
+            }
+            if (size < 0) {
+                return BAD_VALUE;
+            }
+            if (size > MAX_ITEMS_PER_LIST) {
+                size = MAX_ITEMS_PER_LIST;
+            }
+            for (int32_t i = 0; i < size; i++) {
+                int32_t pid;
+                status =  data.readInt32(&pid);
+                if (status != NO_ERROR) {
+                    return status;
+                }
+                pids.push_back(pid);
+            }
+            reply->writeInt32(setAudioHalPids(pids));
+            return NO_ERROR;
+        }
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }
diff --git a/media/libaudioclient/include/media/AudioSystem.h b/media/libaudioclient/include/media/AudioSystem.h
index 3f846f7..f29a775 100644
--- a/media/libaudioclient/include/media/AudioSystem.h
+++ b/media/libaudioclient/include/media/AudioSystem.h
@@ -397,6 +397,12 @@
 
     static status_t setRttEnabled(bool enabled);
 
+     /**
+     * Send audio HAL server process pids to native audioserver process for use
+     * when generating audio HAL servers tombstones
+     */
+    static status_t setAudioHalPids(const std::vector<pid_t>& pids);
+
     // ----------------------------------------------------------------------------
 
     class AudioVolumeGroupCallback : public RefBase
diff --git a/media/libaudioclient/include/media/IAudioFlinger.h b/media/libaudioclient/include/media/IAudioFlinger.h
index a6b9ba8..8e8a1f5 100644
--- a/media/libaudioclient/include/media/IAudioFlinger.h
+++ b/media/libaudioclient/include/media/IAudioFlinger.h
@@ -511,6 +511,8 @@
 
     /* List available microphones and their characteristics */
     virtual status_t getMicrophones(std::vector<media::MicrophoneInfo> *microphones) = 0;
+
+    virtual status_t setAudioHalPids(const std::vector<pid_t>& pids) = 0;
 };
 
 
diff --git a/media/libaudiofoundation/AudioContainers.cpp b/media/libaudiofoundation/AudioContainers.cpp
index 1bfe3f9..31257d5 100644
--- a/media/libaudiofoundation/AudioContainers.cpp
+++ b/media/libaudiofoundation/AudioContainers.cpp
@@ -42,6 +42,13 @@
     return audioDeviceOutAllScoSet;
 }
 
+const DeviceTypeSet& getAudioDeviceOutAllUsbSet() {
+    static const DeviceTypeSet audioDeviceOutAllUsbSet = DeviceTypeSet(
+            std::begin(AUDIO_DEVICE_OUT_ALL_USB_ARRAY),
+            std::end(AUDIO_DEVICE_OUT_ALL_USB_ARRAY));
+    return audioDeviceOutAllUsbSet;
+}
+
 const DeviceTypeSet& getAudioDeviceInAllSet() {
     static const DeviceTypeSet audioDeviceInAllSet = DeviceTypeSet(
             std::begin(AUDIO_DEVICE_IN_ALL_ARRAY),
@@ -49,6 +56,13 @@
     return audioDeviceInAllSet;
 }
 
+const DeviceTypeSet& getAudioDeviceInAllUsbSet() {
+    static const DeviceTypeSet audioDeviceInAllUsbSet = DeviceTypeSet(
+            std::begin(AUDIO_DEVICE_IN_ALL_USB_ARRAY),
+            std::end(AUDIO_DEVICE_IN_ALL_USB_ARRAY));
+    return audioDeviceInAllUsbSet;
+}
+
 bool deviceTypesToString(const DeviceTypeSet &deviceTypes, std::string &str) {
     if (deviceTypes.empty()) {
         str = "Empty device types";
diff --git a/media/libaudiofoundation/DeviceDescriptorBase.cpp b/media/libaudiofoundation/DeviceDescriptorBase.cpp
index f01ac83..ef7576e 100644
--- a/media/libaudiofoundation/DeviceDescriptorBase.cpp
+++ b/media/libaudiofoundation/DeviceDescriptorBase.cpp
@@ -25,12 +25,22 @@
 namespace android {
 
 DeviceDescriptorBase::DeviceDescriptorBase(audio_devices_t type) :
-    AudioPort("", AUDIO_PORT_TYPE_DEVICE,
-              audio_is_output_device(type) ? AUDIO_PORT_ROLE_SINK :
-                                             AUDIO_PORT_ROLE_SOURCE)
+        DeviceDescriptorBase(type, "")
 {
-    mDeviceTypeAddr.mType = type;
-    if (audio_is_remote_submix_device(type)) {
+}
+
+DeviceDescriptorBase::DeviceDescriptorBase(audio_devices_t type, const std::string& address) :
+        DeviceDescriptorBase(AudioDeviceTypeAddr(type, address))
+{
+}
+
+DeviceDescriptorBase::DeviceDescriptorBase(const AudioDeviceTypeAddr &deviceTypeAddr) :
+        AudioPort("", AUDIO_PORT_TYPE_DEVICE,
+                  audio_is_output_device(deviceTypeAddr.mType) ? AUDIO_PORT_ROLE_SINK :
+                                         AUDIO_PORT_ROLE_SOURCE),
+        mDeviceTypeAddr(deviceTypeAddr)
+{
+    if (mDeviceTypeAddr.mAddress.empty() && audio_is_remote_submix_device(mDeviceTypeAddr.mType)) {
         mDeviceTypeAddr.mAddress = "0";
     }
 }
diff --git a/media/libaudiofoundation/include/media/AudioContainers.h b/media/libaudiofoundation/include/media/AudioContainers.h
index 2a3385b..72fda49 100644
--- a/media/libaudiofoundation/include/media/AudioContainers.h
+++ b/media/libaudiofoundation/include/media/AudioContainers.h
@@ -37,7 +37,9 @@
 const DeviceTypeSet& getAudioDeviceOutAllSet();
 const DeviceTypeSet& getAudioDeviceOutAllA2dpSet();
 const DeviceTypeSet& getAudioDeviceOutAllScoSet();
+const DeviceTypeSet& getAudioDeviceOutAllUsbSet();
 const DeviceTypeSet& getAudioDeviceInAllSet();
+const DeviceTypeSet& getAudioDeviceInAllUsbSet();
 
 template<typename T>
 static std::vector<T> Intersection(const std::set<T>& a, const std::set<T>& b) {
diff --git a/media/libaudiofoundation/include/media/DeviceDescriptorBase.h b/media/libaudiofoundation/include/media/DeviceDescriptorBase.h
index 5641ff1..4c03667 100644
--- a/media/libaudiofoundation/include/media/DeviceDescriptorBase.h
+++ b/media/libaudiofoundation/include/media/DeviceDescriptorBase.h
@@ -35,6 +35,8 @@
 public:
      // Note that empty name refers by convention to a generic device.
     explicit DeviceDescriptorBase(audio_devices_t type);
+    DeviceDescriptorBase(audio_devices_t type, const std::string& address);
+    explicit DeviceDescriptorBase(const AudioDeviceTypeAddr& deviceTypeAddr);
 
     virtual ~DeviceDescriptorBase() {}
 
diff --git a/media/libaudiohal/impl/Android.bp b/media/libaudiohal/impl/Android.bp
index 8669e2a..e96a68c 100644
--- a/media/libaudiohal/impl/Android.bp
+++ b/media/libaudiohal/impl/Android.bp
@@ -27,6 +27,7 @@
         "android.hardware.audio.common-util",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
+        "libaudiofoundation",
         "libaudiohal_deathhandler",
         "libaudioutils",
         "libbase",
diff --git a/media/libaudiohal/impl/ConversionHelperHidl.cpp b/media/libaudiohal/impl/ConversionHelperHidl.cpp
index 9f8a520..f29b0f3 100644
--- a/media/libaudiohal/impl/ConversionHelperHidl.cpp
+++ b/media/libaudiohal/impl/ConversionHelperHidl.cpp
@@ -17,6 +17,7 @@
 #include <string.h>
 
 #define LOG_TAG "HalHidl"
+#include <media/AudioContainers.h>
 #include <media/AudioParameter.h>
 #include <utils/Log.h>
 
@@ -109,26 +110,22 @@
     char halAddress[AUDIO_DEVICE_MAX_ADDRESS_LEN];
     memset(halAddress, 0, sizeof(halAddress));
     audio_devices_t halDevice = static_cast<audio_devices_t>(address.device);
-    const bool isInput = (halDevice & AUDIO_DEVICE_BIT_IN) != 0;
-    if (isInput) halDevice &= ~AUDIO_DEVICE_BIT_IN;
-    if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_ALL_A2DP) != 0) ||
-        (isInput && (halDevice & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) != 0)) {
+    if (getAudioDeviceOutAllA2dpSet().count(halDevice) > 0 ||
+        halDevice == AUDIO_DEVICE_IN_BLUETOOTH_A2DP) {
         snprintf(halAddress, sizeof(halAddress), "%02X:%02X:%02X:%02X:%02X:%02X",
                  address.address.mac[0], address.address.mac[1], address.address.mac[2],
                  address.address.mac[3], address.address.mac[4], address.address.mac[5]);
-    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_IP) != 0) ||
-               (isInput && (halDevice & AUDIO_DEVICE_IN_IP) != 0)) {
+    } else if (halDevice == AUDIO_DEVICE_OUT_IP || halDevice == AUDIO_DEVICE_IN_IP) {
         snprintf(halAddress, sizeof(halAddress), "%d.%d.%d.%d", address.address.ipv4[0],
                  address.address.ipv4[1], address.address.ipv4[2], address.address.ipv4[3]);
-    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_ALL_USB) != 0) ||
-               (isInput && (halDevice & AUDIO_DEVICE_IN_ALL_USB) != 0)) {
+    } else if (getAudioDeviceOutAllUsbSet().count(halDevice) > 0 ||
+               getAudioDeviceInAllUsbSet().count(halDevice) > 0) {
         snprintf(halAddress, sizeof(halAddress), "card=%d;device=%d", address.address.alsa.card,
                  address.address.alsa.device);
-    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_BUS) != 0) ||
-               (isInput && (halDevice & AUDIO_DEVICE_IN_BUS) != 0)) {
+    } else if (halDevice == AUDIO_DEVICE_OUT_BUS || halDevice == AUDIO_DEVICE_IN_BUS) {
         snprintf(halAddress, sizeof(halAddress), "%s", address.busAddress.c_str());
-    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_REMOTE_SUBMIX)) != 0 ||
-               (isInput && (halDevice & AUDIO_DEVICE_IN_REMOTE_SUBMIX) != 0)) {
+    } else if (halDevice == AUDIO_DEVICE_OUT_REMOTE_SUBMIX ||
+               halDevice == AUDIO_DEVICE_IN_REMOTE_SUBMIX) {
         snprintf(halAddress, sizeof(halAddress), "%s", address.rSubmixAddress.c_str());
     } else {
         snprintf(halAddress, sizeof(halAddress), "%s", address.busAddress.c_str());
diff --git a/media/libaudiohal/impl/DeviceHalHidl.cpp b/media/libaudiohal/impl/DeviceHalHidl.cpp
index e166900..42c16c0 100644
--- a/media/libaudiohal/impl/DeviceHalHidl.cpp
+++ b/media/libaudiohal/impl/DeviceHalHidl.cpp
@@ -22,6 +22,7 @@
 #include PATH(android/hardware/audio/FILE_VERSION/IPrimaryDevice.h)
 #include <cutils/native_handle.h>
 #include <hwbinder/IPCThreadState.h>
+#include <media/AudioContainers.h>
 #include <utils/Log.h>
 
 #include <common/all-versions/VersionUtils.h>
@@ -51,42 +52,32 @@
     if (halAddress == nullptr || strnlen(halAddress, AUDIO_DEVICE_MAX_ADDRESS_LEN) == 0) {
         return OK;
     }
-    const bool isInput = (device & AUDIO_DEVICE_BIT_IN) != 0;
-    if (isInput) device &= ~AUDIO_DEVICE_BIT_IN;
-    if ((!isInput && (device & AUDIO_DEVICE_OUT_ALL_A2DP) != 0)
-            || (isInput && (device & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) != 0)) {
+    if (getAudioDeviceOutAllA2dpSet().count(device) > 0
+            || device == AUDIO_DEVICE_IN_BLUETOOTH_A2DP) {
         int status = sscanf(halAddress,
                 "%hhX:%hhX:%hhX:%hhX:%hhX:%hhX",
                 &address->address.mac[0], &address->address.mac[1], &address->address.mac[2],
                 &address->address.mac[3], &address->address.mac[4], &address->address.mac[5]);
         return status == 6 ? OK : BAD_VALUE;
-    } else if ((!isInput && (device & AUDIO_DEVICE_OUT_IP) != 0)
-            || (isInput && (device & AUDIO_DEVICE_IN_IP) != 0)) {
+    } else if (device == AUDIO_DEVICE_OUT_IP || device == AUDIO_DEVICE_IN_IP) {
         int status = sscanf(halAddress,
                 "%hhu.%hhu.%hhu.%hhu",
                 &address->address.ipv4[0], &address->address.ipv4[1],
                 &address->address.ipv4[2], &address->address.ipv4[3]);
         return status == 4 ? OK : BAD_VALUE;
-    } else if ((!isInput && (device & AUDIO_DEVICE_OUT_ALL_USB)) != 0
-            || (isInput && (device & AUDIO_DEVICE_IN_ALL_USB)) != 0) {
+    } else if (getAudioDeviceOutAllUsbSet().count(device) > 0
+            || getAudioDeviceInAllUsbSet().count(device) > 0) {
         int status = sscanf(halAddress,
                 "card=%d;device=%d",
                 &address->address.alsa.card, &address->address.alsa.device);
         return status == 2 ? OK : BAD_VALUE;
-    } else if ((!isInput && (device & AUDIO_DEVICE_OUT_BUS) != 0)
-            || (isInput && (device & AUDIO_DEVICE_IN_BUS) != 0)) {
-        if (halAddress != NULL) {
-            address->busAddress = halAddress;
-            return OK;
-        }
-        return BAD_VALUE;
-    } else if ((!isInput && (device & AUDIO_DEVICE_OUT_REMOTE_SUBMIX)) != 0
-            || (isInput && (device & AUDIO_DEVICE_IN_REMOTE_SUBMIX) != 0)) {
-        if (halAddress != NULL) {
-            address->rSubmixAddress = halAddress;
-            return OK;
-        }
-        return BAD_VALUE;
+    } else if (device == AUDIO_DEVICE_OUT_BUS || device == AUDIO_DEVICE_IN_BUS) {
+        address->busAddress = halAddress;
+        return OK;
+    } else if (device == AUDIO_DEVICE_OUT_REMOTE_SUBMIX
+            || device == AUDIO_DEVICE_IN_REMOTE_SUBMIX) {
+        address->rSubmixAddress = halAddress;
+        return OK;
     }
     return OK;
 }
diff --git a/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp b/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp
index 1335a0c..c30da3c 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp
+++ b/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp
@@ -20,6 +20,7 @@
 #define LOG_TAG "DevicesFactoryHalHidl"
 //#define LOG_NDEBUG 0
 
+#include "android/hidl/manager/1.0/IServiceManager.h"
 #include PATH(android/hardware/audio/FILE_VERSION/IDevice.h)
 #include <media/audiohal/hidl/HalDeathHandler.h>
 #include <utils/Log.h>
@@ -28,6 +29,8 @@
 #include "DeviceHalHidl.h"
 #include "DevicesFactoryHalHidl.h"
 
+#include <set>
+
 using ::android::hardware::audio::CPP_VERSION::IDevice;
 using ::android::hardware::audio::CPP_VERSION::Result;
 using ::android::hardware::Return;
@@ -108,5 +111,29 @@
     return BAD_VALUE;
 }
 
+status_t DevicesFactoryHalHidl::getHalPids(std::vector<pid_t> *pids) {
+    std::set<pid_t> pidsSet;
+
+    for (const auto& factory : mDeviceFactories) {
+        using ::android::hidl::base::V1_0::DebugInfo;
+        using android::hidl::manager::V1_0::IServiceManager;
+
+        DebugInfo debugInfo;
+        auto ret = factory->getDebugInfo([&] (const auto &info) {
+               debugInfo = info;
+            });
+        if (!ret.isOk()) {
+           return INVALID_OPERATION;
+        }
+        if (debugInfo.pid == (int)IServiceManager::PidConstant::NO_PID) {
+            continue;
+        }
+        pidsSet.insert(debugInfo.pid);
+    }
+
+    *pids = {pidsSet.begin(), pidsSet.end()};
+    return NO_ERROR;
+}
+
 } // namespace CPP_VERSION
 } // namespace android
diff --git a/media/libaudiohal/impl/DevicesFactoryHalHidl.h b/media/libaudiohal/impl/DevicesFactoryHalHidl.h
index 8775e7b..52185c8 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalHidl.h
+++ b/media/libaudiohal/impl/DevicesFactoryHalHidl.h
@@ -37,6 +37,9 @@
     // Opens a device with the specified name. To close the device, it is
     // necessary to release references to the returned object.
     virtual status_t openDevice(const char *name, sp<DeviceHalInterface> *device);
+
+            status_t getHalPids(std::vector<pid_t> *pids) override;
+
   private:
     std::vector<sp<IDevicesFactory>> mDeviceFactories;
 
diff --git a/media/libaudiohal/impl/DevicesFactoryHalHybrid.cpp b/media/libaudiohal/impl/DevicesFactoryHalHybrid.cpp
index 0e1f1bb..a5aef1b 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalHybrid.cpp
+++ b/media/libaudiohal/impl/DevicesFactoryHalHybrid.cpp
@@ -37,6 +37,14 @@
     }
     return mLocalFactory->openDevice(name, device);
 }
+
+status_t DevicesFactoryHalHybrid::getHalPids(std::vector<pid_t> *pids) {
+    if (mHidlFactory != 0) {
+        return mHidlFactory->getHalPids(pids);
+    }
+    return INVALID_OPERATION;
+}
+
 } // namespace CPP_VERSION
 
 template <>
diff --git a/media/libaudiohal/impl/DevicesFactoryHalHybrid.h b/media/libaudiohal/impl/DevicesFactoryHalHybrid.h
index 545bb70..2189b36 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalHybrid.h
+++ b/media/libaudiohal/impl/DevicesFactoryHalHybrid.h
@@ -36,6 +36,8 @@
     // necessary to release references to the returned object.
     virtual status_t openDevice(const char *name, sp<DeviceHalInterface> *device);
 
+            status_t getHalPids(std::vector<pid_t> *pids) override;
+
   private:
     sp<DevicesFactoryHalInterface> mLocalFactory;
     sp<DevicesFactoryHalInterface> mHidlFactory;
diff --git a/media/libaudiohal/impl/DevicesFactoryHalLocal.h b/media/libaudiohal/impl/DevicesFactoryHalLocal.h
index 5d108dd..2b011f4 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalLocal.h
+++ b/media/libaudiohal/impl/DevicesFactoryHalLocal.h
@@ -33,6 +33,10 @@
     // necessary to release references to the returned object.
     virtual status_t openDevice(const char *name, sp<DeviceHalInterface> *device);
 
+            status_t getHalPids(std::vector<pid_t> *pids __unused) override {
+                return INVALID_OPERATION;
+            }
+
   private:
     friend class DevicesFactoryHalHybrid;
 
diff --git a/media/libaudiohal/include/media/audiohal/DevicesFactoryHalInterface.h b/media/libaudiohal/include/media/audiohal/DevicesFactoryHalInterface.h
index 14af384..e9ac1ce 100644
--- a/media/libaudiohal/include/media/audiohal/DevicesFactoryHalInterface.h
+++ b/media/libaudiohal/include/media/audiohal/DevicesFactoryHalInterface.h
@@ -20,6 +20,7 @@
 #include <media/audiohal/DeviceHalInterface.h>
 #include <utils/Errors.h>
 #include <utils/RefBase.h>
+#include <vector>
 
 namespace android {
 
@@ -30,6 +31,8 @@
     // necessary to release references to the returned object.
     virtual status_t openDevice(const char *name, sp<DeviceHalInterface> *device) = 0;
 
+    virtual status_t getHalPids(std::vector<pid_t> *pids) = 0;
+
     static sp<DevicesFactoryHalInterface> create();
 
   protected:
diff --git a/media/utils/Android.bp b/media/utils/Android.bp
index 8a9039c..5047b19 100644
--- a/media/utils/Android.bp
+++ b/media/utils/Android.bp
@@ -51,6 +51,10 @@
         "libmedia_headers",
     ],
 
+    include_dirs: [
+        // For DEBUGGER_SIGNAL
+        "system/core/debuggerd/include",
+    ],
     local_include_dirs: ["include"],
     export_include_dirs: ["include"],
 }
diff --git a/media/utils/TimeCheck.cpp b/media/utils/TimeCheck.cpp
index 265a232..4a3e470 100644
--- a/media/utils/TimeCheck.cpp
+++ b/media/utils/TimeCheck.cpp
@@ -14,13 +14,50 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "TimeCheck"
 
 #include <utils/Log.h>
 #include <mediautils/TimeCheck.h>
 #include <mediautils/EventLog.h>
+#include "debuggerd/handler.h"
 
 namespace android {
 
+// Audio HAL server pids vector used to generate audio HAL processes tombstone
+// when audioserver watchdog triggers.
+// We use a lockless storage to avoid potential deadlocks in the context of watchdog
+// trigger.
+// Protection again simultaneous writes is not needed given one update takes place
+// during AudioFlinger construction and other comes necessarily later once the IAudioFlinger
+// interface is available.
+// The use of an atomic index just guaranties that current vector is fully initialized
+// when read.
+/* static */
+void TimeCheck::accessAudioHalPids(std::vector<pid_t>* pids, bool update) {
+    static constexpr int kNumAudioHalPidsVectors = 3;
+    static std::vector<pid_t> audioHalPids[kNumAudioHalPidsVectors];
+    static std::atomic<int> curAudioHalPids = 0;
+
+    if (update) {
+        audioHalPids[(curAudioHalPids + 1) % kNumAudioHalPidsVectors] = *pids;
+        curAudioHalPids++;
+    } else {
+        *pids = audioHalPids[curAudioHalPids];
+    }
+}
+
+/* static */
+void TimeCheck::setAudioHalPids(const std::vector<pid_t>& pids) {
+    accessAudioHalPids(&(const_cast<std::vector<pid_t>&>(pids)), true);
+}
+
+/* static */
+std::vector<pid_t> TimeCheck::getAudioHalPids() {
+    std::vector<pid_t> pids;
+    accessAudioHalPids(&pids, false);
+    return pids;
+}
+
 /* static */
 sp<TimeCheck::TimeCheckThread> TimeCheck::getTimeCheckThread()
 {
@@ -82,10 +119,22 @@
         if (waitTimeNs > 0) {
             status = mCond.waitRelative(mMutex, waitTimeNs);
         }
-    }
-    if (status != NO_ERROR) {
-        LOG_EVENT_STRING(LOGTAG_AUDIO_BINDER_TIMEOUT, tag);
-        LOG_ALWAYS_FATAL("TimeCheck timeout for %s", tag);
+        if (status != NO_ERROR) {
+            // Generate audio HAL processes tombstones and allow time to complete
+            // before forcing restart
+            std::vector<pid_t> pids = getAudioHalPids();
+            if (pids.size() != 0) {
+                for (const auto& pid : pids) {
+                    ALOGI("requesting tombstone for pid: %d", pid);
+                    sigqueue(pid, DEBUGGER_SIGNAL, {.sival_int = 0});
+                }
+                sleep(1);
+            } else {
+                ALOGI("No HAL process pid available, skipping tombstones");
+            }
+            LOG_EVENT_STRING(LOGTAG_AUDIO_BINDER_TIMEOUT, tag);
+            LOG_ALWAYS_FATAL("TimeCheck timeout for %s", tag);
+        }
     }
     return true;
 }
diff --git a/media/utils/include/mediautils/TimeCheck.h b/media/utils/include/mediautils/TimeCheck.h
index 6c5f656..5ba6d7c 100644
--- a/media/utils/include/mediautils/TimeCheck.h
+++ b/media/utils/include/mediautils/TimeCheck.h
@@ -20,7 +20,7 @@
 
 #include <utils/KeyedVector.h>
 #include <utils/Thread.h>
-
+#include <vector>
 
 namespace android {
 
@@ -35,6 +35,8 @@
 
             TimeCheck(const char *tag, uint32_t timeoutMs = kDefaultTimeOutMs);
             ~TimeCheck();
+    static  void setAudioHalPids(const std::vector<pid_t>& pids);
+    static  std::vector<pid_t> getAudioHalPids();
 
 private:
 
@@ -63,6 +65,7 @@
     };
 
     static sp<TimeCheckThread> getTimeCheckThread();
+    static void accessAudioHalPids(std::vector<pid_t>* pids, bool update);
 
     const           nsecs_t mEndTimeNs;
 };
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index e722995..525ac68 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -70,6 +70,7 @@
 #include <media/nbaio/PipeReader.h>
 #include <mediautils/BatteryNotifier.h>
 #include <mediautils/ServiceUtilities.h>
+#include <mediautils/TimeCheck.h>
 #include <private/android_filesystem_config.h>
 
 //#define BUFLOG_NDEBUG 0
@@ -193,6 +194,9 @@
     mEffectsFactoryHal = EffectsFactoryHalInterface::create();
 
     mMediaLogNotifier->run("MediaLogNotifier");
+    std::vector<pid_t> halPids;
+    mDevicesFactoryHal->getHalPids(&halPids);
+    TimeCheck::setAudioHalPids(halPids);
 }
 
 void AudioFlinger::onFirstRef()
@@ -218,6 +222,11 @@
     gAudioFlinger = this;
 }
 
+status_t AudioFlinger::setAudioHalPids(const std::vector<pid_t>& pids) {
+  TimeCheck::setAudioHalPids(pids);
+  return NO_ERROR;
+}
+
 AudioFlinger::~AudioFlinger()
 {
     while (!mRecordThreads.isEmpty()) {
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 29d6ec6..9e3ec92 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -281,6 +281,8 @@
 
     virtual status_t getMicrophones(std::vector<media::MicrophoneInfo> *microphones);
 
+    virtual status_t setAudioHalPids(const std::vector<pid_t>& pids);
+
     virtual     status_t    onTransact(
                                 uint32_t code,
                                 const Parcel& data,
diff --git a/services/audioflinger/Effects.cpp b/services/audioflinger/Effects.cpp
index 13152d0..ee7a6d6 100644
--- a/services/audioflinger/Effects.cpp
+++ b/services/audioflinger/Effects.cpp
@@ -29,7 +29,9 @@
 #include <system/audio_effects/effect_visualizer.h>
 #include <audio_utils/channels.h>
 #include <audio_utils/primitives.h>
+#include <media/AudioContainers.h>
 #include <media/AudioEffect.h>
+#include <media/AudioDeviceTypeAddr.h>
 #include <media/audiohal/EffectHalInterface.h>
 #include <media/audiohal/EffectsFactoryHalInterface.h>
 #include <mediautils/ServiceUtilities.h>
@@ -1229,9 +1231,11 @@
     }
 }
 
-status_t AudioFlinger::EffectModule::setDevice(audio_devices_t device)
+status_t AudioFlinger::EffectModule::sendSetAudioDevicesCommand(
+        const AudioDeviceTypeAddrVector &devices, uint32_t cmdCode)
 {
-    if (device == AUDIO_DEVICE_NONE) {
+    audio_devices_t deviceType = deviceTypesToBitMask(getAudioDeviceTypes(devices));
+    if (deviceType == AUDIO_DEVICE_NONE) {
         return NO_ERROR;
     }
 
@@ -1243,17 +1247,26 @@
     if ((mDescriptor.flags & EFFECT_FLAG_DEVICE_MASK) == EFFECT_FLAG_DEVICE_IND) {
         status_t cmdStatus;
         uint32_t size = sizeof(status_t);
-        uint32_t cmd = audio_is_output_devices(device) ? EFFECT_CMD_SET_DEVICE :
-                            EFFECT_CMD_SET_INPUT_DEVICE;
-        status = mEffectInterface->command(cmd,
+        // FIXME: use audio device types and addresses when the hal interface is ready.
+        status = mEffectInterface->command(cmdCode,
                                            sizeof(uint32_t),
-                                           &device,
+                                           &deviceType,
                                            &size,
                                            &cmdStatus);
     }
     return status;
 }
 
+status_t AudioFlinger::EffectModule::setDevices(const AudioDeviceTypeAddrVector &devices)
+{
+    return sendSetAudioDevicesCommand(devices, EFFECT_CMD_SET_DEVICE);
+}
+
+status_t AudioFlinger::EffectModule::setInputDevice(const AudioDeviceTypeAddr &device)
+{
+    return sendSetAudioDevicesCommand({device}, EFFECT_CMD_SET_INPUT_DEVICE);
+}
+
 status_t AudioFlinger::EffectModule::setMode(audio_mode_t mode)
 {
     Mutex::Autolock _l(mLock);
@@ -2288,12 +2301,21 @@
     return mEffects.size();
 }
 
-// setDevice_l() must be called with ThreadBase::mLock held
-void AudioFlinger::EffectChain::setDevice_l(audio_devices_t device)
+// setDevices_l() must be called with ThreadBase::mLock held
+void AudioFlinger::EffectChain::setDevices_l(const AudioDeviceTypeAddrVector &devices)
 {
     size_t size = mEffects.size();
     for (size_t i = 0; i < size; i++) {
-        mEffects[i]->setDevice(device);
+        mEffects[i]->setDevices(devices);
+    }
+}
+
+// setInputDevice_l() must be called with ThreadBase::mLock held
+void AudioFlinger::EffectChain::setInputDevice_l(const AudioDeviceTypeAddr &device)
+{
+    size_t size = mEffects.size();
+    for (size_t i = 0; i < size; i++) {
+        mEffects[i]->setInputDevice(device);
     }
 }
 
diff --git a/services/audioflinger/Effects.h b/services/audioflinger/Effects.h
index 220874d..dbf63c8 100644
--- a/services/audioflinger/Effects.h
+++ b/services/audioflinger/Effects.h
@@ -109,7 +109,8 @@
     const effect_descriptor_t& desc() const { return mDescriptor; }
     wp<EffectChain>&     chain() { return mChain; }
 
-    status_t         setDevice(audio_devices_t device);
+    status_t         setDevices(const AudioDeviceTypeAddrVector &devices);
+    status_t         setInputDevice(const AudioDeviceTypeAddr &device);
     status_t         setVolume(uint32_t *left, uint32_t *right, bool controller);
     status_t         setMode(audio_mode_t mode);
     status_t         setAudioSource(audio_source_t source);
@@ -158,6 +159,7 @@
     status_t start_l();
     status_t stop_l();
     status_t remove_effect_from_hal_l();
+    status_t sendSetAudioDevicesCommand(const AudioDeviceTypeAddrVector &devices, uint32_t cmdCode);
 
 mutable Mutex               mLock;      // mutex for process, commands and handles list protection
     wp<ThreadBase>      mThread;    // parent thread
@@ -350,7 +352,8 @@
     // FIXME use float to improve the dynamic range
     bool setVolume_l(uint32_t *left, uint32_t *right, bool force = false);
     void resetVolume_l();
-    void setDevice_l(audio_devices_t device);
+    void setDevices_l(const AudioDeviceTypeAddrVector &devices);
+    void setInputDevice_l(const AudioDeviceTypeAddr &device);
     void setMode_l(audio_mode_t mode);
     void setAudioSource_l(audio_source_t source);
 
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 59ffff1..06ba8b0 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -1378,8 +1378,8 @@
             effectCreated = true;
 
             // FIXME: use vector of device and address when effect interface is ready.
-            effect->setDevice(deviceTypesToBitMask(outDeviceTypes()));
-            effect->setDevice(inDeviceType());
+            effect->setDevices(outDeviceTypeAddrs());
+            effect->setInputDevice(inDeviceTypeAddr());
             effect->setMode(mAudioFlinger->getMode());
             effect->setAudioSource(mAudioSource);
         }
@@ -1495,8 +1495,8 @@
         return status;
     }
 
-    effect->setDevice(deviceTypesToBitMask(outDeviceTypes()));
-    effect->setDevice(inDeviceType());
+    effect->setDevices(outDeviceTypeAddrs());
+    effect->setInputDevice(inDeviceTypeAddr());
     effect->setMode(mAudioFlinger->getMode());
     effect->setAudioSource(mAudioSource);
 
@@ -1825,7 +1825,7 @@
 
     // TODO: We may also match on address as well as device type for
     // AUDIO_DEVICE_OUT_BUS, AUDIO_DEVICE_OUT_ALL_A2DP, AUDIO_DEVICE_OUT_REMOTE_SUBMIX
-    if (type == MIXER || type == DIRECT) {
+    if (type == MIXER || type == DIRECT || type == OFFLOAD) {
         // TODO: This property should be ensure that only contains one single device type.
         mTimestampCorrectedDevice = (audio_devices_t)property_get_int64(
                 "audio.timestamp.corrected_output_device",
@@ -4070,7 +4070,7 @@
 #endif
 
     for (size_t i = 0; i < mEffectChains.size(); i++) {
-        mEffectChains[i]->setDevice_l(type);
+        mEffectChains[i]->setDevices_l(deviceTypeAddrs);
     }
 
     // mPatch.num_sinks is not set when the thread is created so that
@@ -8321,7 +8321,7 @@
     mInDeviceTypeAddr.mAddress = patch->sources[0].ext.device.address;
     audio_port_handle_t deviceId = patch->sources[0].id;
     for (size_t i = 0; i < mEffectChains.size(); i++) {
-        mEffectChains[i]->setDevice_l(mInDeviceTypeAddr.mType);
+        mEffectChains[i]->setInputDevice_l(inDeviceTypeAddr());
     }
 
     checkBtNrec_l();
@@ -8391,7 +8391,7 @@
     mOutDevices = outDevices;
     mOutDeviceTypeAddrs = deviceTypeAddrsFromDescriptors(mOutDevices);
     for (size_t i = 0; i < mEffectChains.size(); i++) {
-        mEffectChains[i]->setDevice_l(deviceTypesToBitMask(outDeviceTypes()));
+        mEffectChains[i]->setDevices_l(outDeviceTypeAddrs());
     }
 }
 
@@ -8922,7 +8922,11 @@
     }
 
     for (size_t i = 0; i < mEffectChains.size(); i++) {
-        mEffectChains[i]->setDevice_l(type);
+        if (isOutput()) {
+            mEffectChains[i]->setDevices_l(sinkDeviceTypeAddrs);
+        } else {
+            mEffectChains[i]->setInputDevice_l(sourceDeviceTypeAddr);
+        }
     }
 
     if (!isOutput()) {
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index a7660f3..8de7632 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -321,6 +321,13 @@
                     return isOutput() ? outDeviceTypes() : DeviceTypeSet({inDeviceType()});
                 }
 
+                const AudioDeviceTypeAddrVector& outDeviceTypeAddrs() const {
+                    return mOutDeviceTypeAddrs;
+                }
+                const AudioDeviceTypeAddr& inDeviceTypeAddr() const {
+                    return mInDeviceTypeAddr;
+                }
+
     virtual     bool        isOutput() const = 0;
 
     virtual     sp<StreamHalInterface> stream() const = 0;
diff --git a/services/audiopolicy/common/managerdefinitions/include/DeviceDescriptor.h b/services/audiopolicy/common/managerdefinitions/include/DeviceDescriptor.h
index 7faf90e..a6562d7 100644
--- a/services/audiopolicy/common/managerdefinitions/include/DeviceDescriptor.h
+++ b/services/audiopolicy/common/managerdefinitions/include/DeviceDescriptor.h
@@ -33,9 +33,13 @@
 {
 public:
      // Note that empty name refers by convention to a generic device.
-    explicit DeviceDescriptor(audio_devices_t type, const std::string &tagName = "");
-    DeviceDescriptor(audio_devices_t type, const FormatVector &encodedFormats,
-            const std::string &tagName = "");
+    explicit DeviceDescriptor(audio_devices_t type);
+    DeviceDescriptor(audio_devices_t type, const std::string &tagName,
+            const FormatVector &encodedFormats = FormatVector{});
+    DeviceDescriptor(audio_devices_t type, const std::string &tagName,
+            const std::string &address, const FormatVector &encodedFormats = FormatVector{});
+    DeviceDescriptor(const AudioDeviceTypeAddr &deviceTypeAddr, const std::string &tagName = "",
+            const FormatVector &encodedFormats = FormatVector{});
 
     virtual ~DeviceDescriptor() {}
 
diff --git a/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp b/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
index 993c3a1..86dbba8 100644
--- a/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
@@ -26,14 +26,30 @@
 
 namespace android {
 
-DeviceDescriptor::DeviceDescriptor(audio_devices_t type, const std::string &tagName) :
-        DeviceDescriptor(type, FormatVector{}, tagName)
+DeviceDescriptor::DeviceDescriptor(audio_devices_t type) :
+        DeviceDescriptor(type, "" /*tagName*/)
 {
 }
 
-DeviceDescriptor::DeviceDescriptor(audio_devices_t type, const FormatVector &encodedFormats,
-        const std::string &tagName) :
-    DeviceDescriptorBase(type), mTagName(tagName), mEncodedFormats(encodedFormats)
+DeviceDescriptor::DeviceDescriptor(audio_devices_t type,
+                                   const std::string &tagName,
+                                   const FormatVector &encodedFormats) :
+        DeviceDescriptor(type, tagName, "" /*address*/, encodedFormats)
+{
+}
+
+DeviceDescriptor::DeviceDescriptor(audio_devices_t type,
+                                   const std::string &tagName,
+                                   const std::string &address,
+                                   const FormatVector &encodedFormats) :
+        DeviceDescriptor(AudioDeviceTypeAddr(type, address), tagName, encodedFormats)
+{
+}
+
+DeviceDescriptor::DeviceDescriptor(const AudioDeviceTypeAddr &deviceTypeAddr,
+                                   const std::string &tagName,
+                                   const FormatVector &encodedFormats) :
+        DeviceDescriptorBase(deviceTypeAddr), mTagName(tagName), mEncodedFormats(encodedFormats)
 {
     mCurrentEncodedFormat = AUDIO_FORMAT_DEFAULT;
     /* If framework runs against a pre 5.0 Audio HAL, encoded formats are absent from the config.
@@ -41,7 +57,7 @@
      * For now, the workaround to remove AC3 and IEC61937 support on HDMI is to declare
      * something like 'encodedFormats="AUDIO_FORMAT_PCM_16_BIT"' on the HDMI devicePort.
      */
-    if (type == AUDIO_DEVICE_OUT_HDMI && mEncodedFormats.empty()) {
+    if (mDeviceTypeAddr.mType == AUDIO_DEVICE_OUT_HDMI && mEncodedFormats.empty()) {
         mEncodedFormats.push_back(AUDIO_FORMAT_AC3);
         mEncodedFormats.push_back(AUDIO_FORMAT_IEC61937);
     }
diff --git a/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp b/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
index 0b4d3d4..886e4c9 100644
--- a/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
@@ -49,8 +49,7 @@
     profile->addAudioProfile(new AudioProfile(config->format, config->channel_mask,
                                               config->sample_rate));
 
-    sp<DeviceDescriptor> devDesc = new DeviceDescriptor(device);
-    devDesc->setAddress(address.string());
+    sp<DeviceDescriptor> devDesc = new DeviceDescriptor(device, "" /*tagName*/, address.string());
     addDynamicDevice(devDesc);
     // Reciprocally attach the device to the module
     devDesc->attach(this);
@@ -117,8 +116,7 @@
     profile->addAudioProfile(new AudioProfile(config->format, config->channel_mask,
                                               config->sample_rate));
 
-    sp<DeviceDescriptor> devDesc = new DeviceDescriptor(device);
-    devDesc->setAddress(address.string());
+    sp<DeviceDescriptor> devDesc = new DeviceDescriptor(device, "" /*tagName*/, address.string());
     addDynamicDevice(devDesc);
     // Reciprocally attach the device to the module
     devDesc->attach(this);
@@ -360,9 +358,9 @@
               address);
         return nullptr;
     }
-    sp<DeviceDescriptor> device = new DeviceDescriptor(type, name);
+
+    sp<DeviceDescriptor> device = new DeviceDescriptor(type, name, address);
     device->setName(name);
-    device->setAddress(address);
     device->setEncodedFormat(encodedFormat);
 
   // Add the device to the list of dynamic devices
diff --git a/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp b/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp
index 3b27cf6..4de8d3b 100644
--- a/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp
@@ -511,13 +511,8 @@
     if (!encodedFormatsLiteral.empty()) {
         encodedFormats = formatsFromString(encodedFormatsLiteral, " ");
     }
-    Element deviceDesc = new DeviceDescriptor(type, encodedFormats, name);
-
     std::string address = getXmlAttribute(cur, Attributes::address);
-    if (!address.empty()) {
-        ALOGV("%s: address=%s for %s", __func__, address.c_str(), name.c_str());
-        deviceDesc->setAddress(address);
-    }
+    Element deviceDesc = new DeviceDescriptor(type, name, address, encodedFormats);
 
     AudioProfileTraits::Collection profiles;
     status_t status = deserializeCollection<AudioProfileTraits>(cur, &profiles, NULL);
diff --git a/services/oboeservice/AAudioClientTracker.cpp b/services/oboeservice/AAudioClientTracker.cpp
index 8572561..6e14434 100644
--- a/services/oboeservice/AAudioClientTracker.cpp
+++ b/services/oboeservice/AAudioClientTracker.cpp
@@ -75,10 +75,10 @@
 
     std::lock_guard<std::mutex> lock(mLock);
     if (mNotificationClients.count(pid) == 0) {
-        sp<NotificationClient> notificationClient = new NotificationClient(pid);
+        sp<IBinder> binder = IInterface::asBinder(client);
+        sp<NotificationClient> notificationClient = new NotificationClient(pid, binder);
         mNotificationClients[pid] = notificationClient;
 
-        sp<IBinder> binder = IInterface::asBinder(client);
         status_t status = binder->linkToDeath(notificationClient);
         ALOGW_IF(status != NO_ERROR, "registerClient() linkToDeath = %d\n", status);
         return AAudioConvert_androidToAAudioResult(status);
@@ -113,7 +113,7 @@
     if (notificationClient == 0) {
         // This will get called the first time the audio server registers an internal stream.
         ALOGV("registerClientStream(%d,) unrecognized pid\n", pid);
-        notificationClient = new NotificationClient(pid);
+        notificationClient = new NotificationClient(pid, nullptr);
         mNotificationClients[pid] = notificationClient;
     }
     notificationClient->registerClientStream(serviceStream);
@@ -136,8 +136,8 @@
     return AAUDIO_OK;
 }
 
-AAudioClientTracker::NotificationClient::NotificationClient(pid_t pid)
-        : mProcessId(pid) {
+AAudioClientTracker::NotificationClient::NotificationClient(pid_t pid, const sp<IBinder>& binder)
+        : mProcessId(pid), mBinder(binder) {
 }
 
 AAudioClientTracker::NotificationClient::~NotificationClient() {
diff --git a/services/oboeservice/AAudioClientTracker.h b/services/oboeservice/AAudioClientTracker.h
index accf1a7..00ff467 100644
--- a/services/oboeservice/AAudioClientTracker.h
+++ b/services/oboeservice/AAudioClientTracker.h
@@ -73,7 +73,7 @@
      */
     class NotificationClient : public IBinder::DeathRecipient {
     public:
-        NotificationClient(pid_t pid);
+        NotificationClient(pid_t pid, const android::sp<IBinder>& binder);
         virtual ~NotificationClient();
 
         int32_t getStreamCount();
@@ -91,6 +91,8 @@
         mutable std::mutex                              mLock;
         const pid_t                                     mProcessId;
         std::set<android::sp<AAudioServiceStreamBase>>  mStreams;
+        // hold onto binder to receive death notifications
+        android::sp<IBinder>                            mBinder;
     };
 
     mutable std::mutex                               mLock;