diff --git a/Android.mk b/Android.mk
index 9806d10..d727ca2 100644
--- a/Android.mk
+++ b/Android.mk
@@ -56,12 +56,10 @@
 LOCAL_MODULE := recovery_deps
 
 ifeq ($(TARGET_USERIMAGES_USE_F2FS),true)
-ifeq ($(HOST_OS),linux)
 LOCAL_REQUIRED_MODULES += \
     make_f2fs.recovery \
     sload_f2fs.recovery
 endif
-endif
 
 # On A/B devices recovery-persist reads the recovery related file from the persist storage and
 # copies them into /data/misc/recovery. Then, for both A/B and non-A/B devices, recovery-persist
diff --git a/applypatch/imgdiff.cpp b/applypatch/imgdiff.cpp
index 6ad4a61..91007ac 100644
--- a/applypatch/imgdiff.cpp
+++ b/applypatch/imgdiff.cpp
@@ -965,7 +965,7 @@
         used_src_ranges.Insert(src_ranges);
         split_src_ranges->push_back(std::move(src_ranges));
       }
-      src_ranges.Clear();
+      src_ranges = {};
 
       // We don't have enough space for the current chunk; start a new split image and handle
       // this chunk there.
@@ -1035,7 +1035,7 @@
   }
 
   ZipModeImage split_tgt_image(false);
-  split_tgt_image.Initialize(std::move(aligned_tgt_chunks), {});
+  split_tgt_image.Initialize(aligned_tgt_chunks, {});
   split_tgt_image.MergeAdjacentNormalChunks();
 
   // Construct the dummy source file based on the src_ranges.
@@ -1051,7 +1051,7 @@
   CHECK(!src_content.empty());
 
   ZipModeImage split_src_image(true);
-  split_src_image.Initialize(split_src_chunks, std::move(src_content));
+  split_src_image.Initialize(split_src_chunks, src_content);
 
   split_tgt_images->push_back(std::move(split_tgt_image));
   split_src_images->push_back(std::move(split_src_image));
diff --git a/edify/include/edify/expr.h b/edify/include/edify/expr.h
index cd9c701..3ddf7f5 100644
--- a/edify/include/edify/expr.h
+++ b/edify/include/edify/expr.h
@@ -60,7 +60,7 @@
     BLOB = 2,
   };
 
-  Value(Type type, const std::string& str) : type(type), data(str) {}
+  Value(Type type, std::string str) : type(type), data(std::move(str)) {}
 
   Type type;
   std::string data;
diff --git a/recovery_ui/screen_ui.cpp b/recovery_ui/screen_ui.cpp
index 087fc0e..6dcb161 100644
--- a/recovery_ui/screen_ui.cpp
+++ b/recovery_ui/screen_ui.cpp
@@ -448,7 +448,9 @@
     int frame_height = gr_get_height(frame);
     int frame_x = (ScreenWidth() - frame_width) / 2;
     int frame_y = GetAnimationBaseline();
-    DrawSurface(frame, 0, 0, frame_width, frame_height, frame_x, frame_y);
+    if (frame_x >= 0 && frame_y >= 0 && (frame_x + frame_width) < ScreenWidth() &&
+        (frame_y + frame_height) < ScreenHeight())
+      DrawSurface(frame, 0, 0, frame_width, frame_height, frame_x, frame_y);
   }
 
   if (progressBarType != EMPTY) {
diff --git a/tests/Android.bp b/tests/Android.bp
index 4c23255..a9a088a 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -95,6 +95,24 @@
     "libc++fs",
 ]
 
+// recovery image for unittests.
+// ========================================================
+genrule {
+    name: "recovery_image",
+    cmd: "cat $(location testdata/recovery_head) <(cat $(location testdata/recovery_body) | $(location minigzip)) $(location testdata/recovery_tail) > $(out)",
+    srcs: [
+        "testdata/recovery_head",
+        "testdata/recovery_body",
+        "testdata/recovery_tail",
+    ],
+    tools: [
+        "minigzip",
+    ],
+    out: [
+        "testdata/recovery.img",
+    ],
+}
+
 cc_test {
     name: "recovery_unit_test",
     isolated: true,
@@ -128,6 +146,7 @@
 
     data: [
         "testdata/*",
+        ":recovery_image",
         ":res-testdata",
     ],
 }
diff --git a/tests/testdata/recovery.img b/tests/testdata/recovery.img
deleted file mode 100644
index b862e6f..0000000
--- a/tests/testdata/recovery.img
+++ /dev/null
Binary files differ
diff --git a/tests/testdata/recovery_body b/tests/testdata/recovery_body
new file mode 100644
index 0000000..48d7c10
--- /dev/null
+++ b/tests/testdata/recovery_body
Binary files differ
diff --git a/tests/testdata/recovery_head b/tests/testdata/recovery_head
new file mode 100644
index 0000000..7f494d0
--- /dev/null
+++ b/tests/testdata/recovery_head
Binary files differ
diff --git a/tests/testdata/recovery_tail b/tests/testdata/recovery_tail
new file mode 100644
index 0000000..7fe2c6c
--- /dev/null
+++ b/tests/testdata/recovery_tail
Binary files differ
diff --git a/updater/Android.bp b/updater/Android.bp
index cbef430..f00a192 100644
--- a/updater/Android.bp
+++ b/updater/Android.bp
@@ -25,6 +25,7 @@
         "libdm",
         "libfec",
         "libfec_rs",
+        "libavb",
         "libverity_tree",
         "libgtest_prod",
         "liblog",
diff --git a/updater/Android.mk b/updater/Android.mk
index 8a4cd86..46300d9 100644
--- a/updater/Android.mk
+++ b/updater/Android.mk
@@ -32,6 +32,7 @@
     libdm \
     libfec \
     libfec_rs \
+    libavb \
     libverity_tree \
     libgtest_prod \
     liblog \
diff --git a/updater/include/private/commands.h b/updater/include/private/commands.h
index 79f9154..7a23bb7 100644
--- a/updater/include/private/commands.h
+++ b/updater/include/private/commands.h
@@ -307,7 +307,7 @@
       : type_(type),
         index_(index),
         cmdline_(std::move(cmdline)),
-        patch_(std::move(patch)),
+        patch_(patch),
         target_(std::move(target)),
         source_(std::move(source)),
         stash_(std::move(stash)) {}