diff --git a/aosp/dynamic_partition_control_android.cc b/aosp/dynamic_partition_control_android.cc
index e950a2e..af46b35 100644
--- a/aosp/dynamic_partition_control_android.cc
+++ b/aosp/dynamic_partition_control_android.cc
@@ -199,7 +199,7 @@
   };
   bool success = false;
   if (GetVirtualAbFeatureFlag().IsEnabled() && target_supports_snapshot_ &&
-      force_writable && ExpectMetadataMounted()) {
+      slot != source_slot_ && force_writable && ExpectMetadataMounted()) {
     // Only target partitions are mapped with force_writable. On Virtual
     // A/B devices, target partitions may overlap with source partitions, so
     // they must be mapped with snapshot.
@@ -1247,7 +1247,7 @@
     }
   }
 
-  bool force_writable = (slot != current_slot) && !not_in_payload;
+  const bool force_writable = !not_in_payload;
   if (MapPartitionOnDeviceMapper(
           super_device, partition_name_suffix, slot, force_writable, device)) {
     return DynamicPartitionDeviceStatus::SUCCESS;
diff --git a/payload_consumer/verified_source_fd.cc b/payload_consumer/verified_source_fd.cc
index 3f17ad7..d760d1f 100644
--- a/payload_consumer/verified_source_fd.cc
+++ b/payload_consumer/verified_source_fd.cc
@@ -109,9 +109,16 @@
   brillo::Blob source_hash;
   brillo::Blob expected_source_hash(operation.src_sha256_hash().begin(),
                                     operation.src_sha256_hash().end());
-  if (fd_utils::ReadAndHashExtents(
-          source_fd_, operation.src_extents(), block_size_, &source_hash) &&
-      source_hash == expected_source_hash) {
+  if (!fd_utils::ReadAndHashExtents(
+          source_fd_, operation.src_extents(), block_size_, &source_hash)) {
+    LOG(ERROR) << "Failed to compute hash for operation " << operation.type()
+               << " data offset: " << operation.data_offset();
+    if (error) {
+      *error = ErrorCode::kDownloadOperationHashVerificationError;
+    }
+    return nullptr;
+  }
+  if (source_hash == expected_source_hash) {
     return source_fd_;
   }
   if (error) {