diff --git a/media_driver/agnostic/gen8/codec/hal/codechal_fei_avc_g8.cpp b/media_driver/agnostic/gen8/codec/hal/codechal_fei_avc_g8.cpp
index 31e6ca84a3..1de653fed4 100644
--- a/media_driver/agnostic/gen8/codec/hal/codechal_fei_avc_g8.cpp
+++ b/media_driver/agnostic/gen8/codec/hal/codechal_fei_avc_g8.cpp
@@ -6884,7 +6884,6 @@ MOS_STATUS CodechalEncodeAvcEncFeiG8::InitializeState()
     }
 
     bWeightedPredictionSupported = true;
-    m_brcHistoryBufferSize = m_brcHistoryBufferSize;
     dwBrcConstantSurfaceWidth = m_brcConstantSurfaceWidth;
     dwBrcConstantSurfaceHeight = m_brcConstantSurfaceHeight;
 
diff --git a/media_driver/linux/common/codec/ddi/media_libva_decoder.cpp b/media_driver/linux/common/codec/ddi/media_libva_decoder.cpp
index edeb718968..6dc130d6ca 100755
--- a/media_driver/linux/common/codec/ddi/media_libva_decoder.cpp
+++ b/media_driver/linux/common/codec/ddi/media_libva_decoder.cpp
@@ -65,7 +65,7 @@ static int32_t DdiDecode_GetDisplayInfo(VADriverContextP ctx)
     vsinfo.yres                           = 0;
 
     fd = open("/dev/graphics/fb0",O_RDONLY);
-    if(fd > 0)
+    if(fd >= 0)
     {
         if(ioctl(fd, FBIOGET_VSCREENINFO, &vsinfo) < 0)
         {
@@ -527,7 +527,7 @@ VAStatus DdiDecode_StatusReport(PDDI_MEDIA_CONTEXT mediaCtx, DecodePipelineAdapt
         // The surface is not busy in HW, but uNumCompletedReport is 0, treat as engine reset 
         else
         {
-            surface->curStatusReport.decode.status == CODECHAL_STATUS_INCOMPLETE;
+            surface->curStatusReport.decode.status = CODECHAL_STATUS_INCOMPLETE;
             surface->curStatusReportQueryState = DDI_MEDIA_STATUS_REPORT_QUERY_STATE_COMPLETED;
             DDI_ASSERTMESSAGE("No report available at all! Engine reset may have occured.");
         }
diff --git a/media_driver/linux/common/renderhal/renderhal_linux.cpp b/media_driver/linux/common/renderhal/renderhal_linux.cpp
index 65a422641b..e2393e02cf 100644
--- a/media_driver/linux/common/renderhal/renderhal_linux.cpp
+++ b/media_driver/linux/common/renderhal/renderhal_linux.cpp
@@ -242,6 +242,7 @@ MOS_STATUS RenderHal_SetSurfaceStateToken(
 
     SURFACE_STATE_TOKEN_COMMON *pTokenState = (SURFACE_STATE_TOKEN_COMMON*)pSurfaceStateToken;
     PMOS_INTERFACE pOsInterface = pRenderHal->pOsInterface;
+    MHW_MI_CHK_NULL(pOsInterface);
     PMOS_RESOURCE  pOsResource  = &(pParams->pOsSurface->OsResource);
 
     int32_t  iAllocationIndex =  pOsInterface->pfnGetResourceAllocationIndex(pOsInterface, pOsResource);
diff --git a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_back_end_xe_lpm_plus_base.h b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_back_end_xe_lpm_plus_base.h
index a86344914a..261162eecc 100644
--- a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_back_end_xe_lpm_plus_base.h
+++ b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_back_end_xe_lpm_plus_base.h
@@ -41,6 +41,7 @@ class HevcDecodeBackEndPktXe_Lpm_Plus_Base : public HevcDecodeBackEndPkt
         : HevcDecodeBackEndPkt(pipeline, task, hwInterface)
     {
         m_hwInterface = dynamic_cast<CodechalHwInterfaceXe_Lpm_Plus_Base*>(hwInterface);
+        DECODE_CHK_NULL_NO_STATUS_RETURN(m_hwInterface);
         m_vdencItf    = std::static_pointer_cast<mhw::vdbox::vdenc::Itf>(m_hwInterface->GetVdencInterfaceNext());
     }
 
diff --git a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_front_end_xe_lpm_plus_base.h b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_front_end_xe_lpm_plus_base.h
index f173a34bc7..e318f24a16 100644
--- a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_front_end_xe_lpm_plus_base.h
+++ b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_front_end_xe_lpm_plus_base.h
@@ -41,6 +41,7 @@ class HevcDecodeFrontEndPktXe_Lpm_Plus_Base : public HevcDecodeFrontEndPkt
         : HevcDecodeFrontEndPkt(pipeline, task, hwInterface)
     {
         m_hwInterface = dynamic_cast<CodechalHwInterfaceXe_Lpm_Plus_Base*>(hwInterface);
+        DECODE_CHK_NULL_NO_STATUS_RETURN(m_hwInterface);
         m_vdencItf    = std::static_pointer_cast<mhw::vdbox::vdenc::Itf>(m_hwInterface->GetVdencInterfaceNext());
     }
 
diff --git a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_long_xe_lpm_plus_base.h b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_long_xe_lpm_plus_base.h
index bd6858608d..a44f9dc68c 100644
--- a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_long_xe_lpm_plus_base.h
+++ b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_long_xe_lpm_plus_base.h
@@ -41,6 +41,7 @@ class HevcDecodeLongPktXe_Lpm_Plus_Base : public HevcDecodeLongPkt
         : HevcDecodeLongPkt(pipeline, task, hwInterface)
     {
         m_hwInterface = dynamic_cast<CodechalHwInterfaceXe_Lpm_Plus_Base*>(hwInterface);
+        DECODE_CHK_NULL_NO_STATUS_RETURN(m_hwInterface);
         m_vdencItf    = std::static_pointer_cast<mhw::vdbox::vdenc::Itf>(m_hwInterface->GetVdencInterfaceNext());
     }
 
diff --git a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_real_tile_xe_lpm_plus_base.h b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_real_tile_xe_lpm_plus_base.h
index 6213582f16..4e20650df5 100644
--- a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_real_tile_xe_lpm_plus_base.h
+++ b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/hevc/packet/decode_hevc_packet_real_tile_xe_lpm_plus_base.h
@@ -41,6 +41,7 @@ class HevcDecodeRealTilePktXe_Lpm_Plus_Base : public HevcDecodeRealTilePkt
         : HevcDecodeRealTilePkt(pipeline, task, hwInterface)
     {
         m_hwInterface = dynamic_cast<CodechalHwInterfaceXe_Lpm_Plus_Base*>(hwInterface);
+        DECODE_CHK_NULL_NO_STATUS_RETURN(m_hwInterface);
         m_vdencItf    = std::static_pointer_cast<mhw::vdbox::vdenc::Itf>(m_hwInterface->GetVdencInterfaceNext());
     }
 
diff --git a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_back_end_xe_lpm_plus_base.h b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_back_end_xe_lpm_plus_base.h
index 3557bf146a..d9aebd3d86 100644
--- a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_back_end_xe_lpm_plus_base.h
+++ b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_back_end_xe_lpm_plus_base.h
@@ -41,6 +41,7 @@ class Vp9DecodeBackEndPktXe_Lpm_Plus_Base : public Vp9DecodeBackEndPkt
         : Vp9DecodeBackEndPkt(pipeline, task, hwInterface)
     {
         m_hwInterface = dynamic_cast<CodechalHwInterfaceXe_Lpm_Plus_Base *>(hwInterface);
+        DECODE_CHK_NULL_NO_STATUS_RETURN(m_hwInterface);
         m_vdencItf    = std::static_pointer_cast<mhw::vdbox::vdenc::Itf>(m_hwInterface->GetVdencInterfaceNext());
     }
 
diff --git a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_front_end_xe_lpm_plus_base.h b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_front_end_xe_lpm_plus_base.h
index f298718811..9e4488f763 100644
--- a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_front_end_xe_lpm_plus_base.h
+++ b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_front_end_xe_lpm_plus_base.h
@@ -41,6 +41,7 @@ class Vp9DecodeFrontEndPktXe_Lpm_Plus_Base : public Vp9DecodeFrontEndPkt
         : Vp9DecodeFrontEndPkt(pipeline, task, hwInterface)
     {
         m_hwInterface = dynamic_cast<CodechalHwInterfaceXe_Lpm_Plus_Base *>(hwInterface);
+        DECODE_CHK_NULL_NO_STATUS_RETURN(m_hwInterface);
         m_vdencItf    = std::static_pointer_cast<mhw::vdbox::vdenc::Itf>(m_hwInterface->GetVdencInterfaceNext());
     }
 
diff --git a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_single_xe_lpm_plus_base.h b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_single_xe_lpm_plus_base.h
index 5497b1bcee..e5f01ae77b 100644
--- a/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_single_xe_lpm_plus_base.h
+++ b/media_softlet/agnostic/Xe_M_plus/Xe_LPM_plus_base/codec/hal/dec/vp9/packet/decode_vp9_packet_single_xe_lpm_plus_base.h
@@ -40,6 +40,7 @@ class Vp9DecodeSinglePktXe_Lpm_Plus_Base : public Vp9DecodeSinglePkt
         Vp9DecodeSinglePkt(pipeline, task, hwInterface)
     {
         m_hwInterface = dynamic_cast<CodechalHwInterfaceXe_Lpm_Plus_Base *>(hwInterface);
+        DECODE_CHK_NULL_NO_STATUS_RETURN(m_hwInterface);
         m_vdencItf    = std::static_pointer_cast<mhw::vdbox::vdenc::Itf>(m_hwInterface->GetVdencInterfaceNext());
     }
 
diff --git a/media_softlet/linux/common/codec/ddi/dec/ddi_decode_functions.cpp b/media_softlet/linux/common/codec/ddi/dec/ddi_decode_functions.cpp
index c44812be92..5fe54688ad 100644
--- a/media_softlet/linux/common/codec/ddi/dec/ddi_decode_functions.cpp
+++ b/media_softlet/linux/common/codec/ddi/dec/ddi_decode_functions.cpp
@@ -1097,7 +1097,7 @@ VAStatus DdiDecodeFunctions::StatusReport(
         // The surface is not busy in HW, but uNumCompletedReport is 0, treat as engine reset 
         else
         {
-            surface->curStatusReport.decode.status == CODECHAL_STATUS_INCOMPLETE;
+            surface->curStatusReport.decode.status = CODECHAL_STATUS_INCOMPLETE;
             surface->curStatusReportQueryState = DDI_MEDIA_STATUS_REPORT_QUERY_STATE_COMPLETED;
             DDI_ASSERTMESSAGE("No report available at all! Engine reset may have occured.");
         }
@@ -1252,7 +1252,7 @@ int32_t DdiDecodeFunctions::GetDisplayInfo(VADriverContextP ctx)
     vsinfo.yres = 0;
 
     fd = open("/dev/graphics/fb0",O_RDONLY);
-    if (fd > 0)
+    if (fd >= 0)
     {
         if (ioctl(fd, FBIOGET_VSCREENINFO, &vsinfo) < 0)
         {