diff --git a/fs_mgr/libsnapshot/partition_cow_creator.cpp b/fs_mgr/libsnapshot/partition_cow_creator.cpp
index 7057223..5bc7e65 100644
--- a/fs_mgr/libsnapshot/partition_cow_creator.cpp
+++ b/fs_mgr/libsnapshot/partition_cow_creator.cpp
@@ -131,15 +131,28 @@
     return is_optimized;
 }
 
-void WriteExtent(DmSnapCowSizeCalculator* sc, const chromeos_update_engine::Extent& de,
+bool WriteExtent(DmSnapCowSizeCalculator* sc, const chromeos_update_engine::Extent& de,
                  unsigned int sectors_per_block) {
     const auto block_boundary = de.start_block() + de.num_blocks();
     for (auto b = de.start_block(); b < block_boundary; ++b) {
         for (unsigned int s = 0; s < sectors_per_block; ++s) {
-            const auto sector_id = b * sectors_per_block + s;
+            // sector_id = b * sectors_per_block + s;
+            uint64_t block_start_sector_id;
+            if (__builtin_mul_overflow(b, sectors_per_block, &block_start_sector_id)) {
+                LOG(ERROR) << "Integer overflow when calculating sector id (" << b << " * "
+                           << sectors_per_block << ")";
+                return false;
+            }
+            uint64_t sector_id;
+            if (__builtin_add_overflow(block_start_sector_id, s, &sector_id)) {
+                LOG(ERROR) << "Integer overflow when calculating sector id ("
+                           << block_start_sector_id << " + " << s << ")";
+                return false;
+            }
             sc->WriteSector(sector_id);
         }
     }
+    return true;
 }
 
 std::optional<uint64_t> PartitionCowCreator::GetCowSize() {
@@ -167,7 +180,7 @@
     // Allocate space for extra extents (if any). These extents are those that can be
     // used for error corrections or to store verity hash trees.
     for (const auto& de : extra_extents) {
-        WriteExtent(&sc, de, sectors_per_block);
+        if (!WriteExtent(&sc, de, sectors_per_block)) return std::nullopt;
     }
 
     if (update == nullptr) return sc.cow_size_bytes();
@@ -182,7 +195,7 @@
         }
 
         for (const auto& de : written_op->dst_extents()) {
-            WriteExtent(&sc, de, sectors_per_block);
+            if (!WriteExtent(&sc, de, sectors_per_block)) return std::nullopt;
         }
     }
 
diff --git a/libutils/Android.bp b/libutils/Android.bp
index c744b53..eb2a534 100644
--- a/libutils/Android.bp
+++ b/libutils/Android.bp
@@ -174,10 +174,6 @@
     min_sdk_version: "apex_inherit",
 
     afdo: true,
-
-    header_abi_checker: {
-        diff_flags: ["-allow-adding-removing-weak-symbols"],
-    },
 }
 
 cc_library {
diff --git a/rootdir/init.rc b/rootdir/init.rc
index ec760d3..fe7f736 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -940,22 +940,28 @@
     restorecon /data/media
     exec - media_rw media_rw -- /system/bin/chattr +F /data/media
 
-    # A tmpfs directory, which will contain all apps CE DE data directory that
-    # bind mount from the original source.
+    # A tmpfs directory, which will contain all apps and sdk sandbox CE and DE
+    # data directory that bind mount from the original source.
     mount tmpfs tmpfs /data_mirror nodev noexec nosuid mode=0700,uid=0,gid=1000
     restorecon /data_mirror
     mkdir /data_mirror/data_ce 0700 root root
     mkdir /data_mirror/data_de 0700 root root
+    mkdir /data_mirror/misc_ce 0700 root root
+    mkdir /data_mirror/misc_de 0700 root root
 
     # Create CE and DE data directory for default volume
     mkdir /data_mirror/data_ce/null 0700 root root
     mkdir /data_mirror/data_de/null 0700 root root
+    mkdir /data_mirror/misc_ce/null 0700 root root
+    mkdir /data_mirror/misc_de/null 0700 root root
 
     # Bind mount CE and DE data directory to mirror's default volume directory.
     # The 'slave' option (MS_SLAVE) is needed to cause the later bind mount of
     # /data/data onto /data/user/0 to propagate to /data_mirror/data_ce/null/0.
     mount none /data/user /data_mirror/data_ce/null bind rec slave
     mount none /data/user_de /data_mirror/data_de/null bind rec
+    mount none /data/misc_ce /data_mirror/misc_ce/null bind rec
+    mount none /data/misc_de /data_mirror/misc_de/null bind rec
 
     # Create mirror directory for jit profiles
     mkdir /data_mirror/cur_profiles 0700 root root