diff --git a/fs_mgr/liblp/builder.cpp b/fs_mgr/liblp/builder.cpp
index 2f516fa..dc3b985 100644
--- a/fs_mgr/liblp/builder.cpp
+++ b/fs_mgr/liblp/builder.cpp
@@ -401,8 +401,8 @@
         // untouched to be compatible code that looks for an MBR. Thus we
         // start counting free sectors at sector 1, not 0.
         uint64_t free_area_start = LP_SECTOR_SIZE;
-        if (out.alignment || out.alignment_offset) {
-            free_area_start = AlignTo(free_area_start, out.alignment, out.alignment_offset);
+        if (out.alignment) {
+            free_area_start = AlignTo(free_area_start, out.alignment);
         } else {
             free_area_start = AlignTo(free_area_start, logical_block_size);
         }
@@ -442,7 +442,7 @@
     // Compute the first free sector, factoring in alignment.
     uint64_t free_area_start = total_reserved;
     if (super.alignment || super.alignment_offset) {
-        free_area_start = AlignTo(free_area_start, super.alignment, super.alignment_offset);
+        free_area_start = AlignTo(free_area_start, super.alignment);
     } else {
         free_area_start = AlignTo(free_area_start, logical_block_size);
     }
@@ -930,7 +930,7 @@
     // Note: when reading alignment info from the Kernel, we don't assume it
     // is aligned to the sector size, so we round up to the nearest sector.
     uint64_t lba = sector * LP_SECTOR_SIZE;
-    uint64_t aligned = AlignTo(lba, block_device.alignment, block_device.alignment_offset);
+    uint64_t aligned = AlignTo(lba, block_device.alignment);
     return AlignTo(aligned, LP_SECTOR_SIZE) / LP_SECTOR_SIZE;
 }
 
diff --git a/fs_mgr/liblp/builder_test.cpp b/fs_mgr/liblp/builder_test.cpp
index 977ebe3..52a3217 100644
--- a/fs_mgr/liblp/builder_test.cpp
+++ b/fs_mgr/liblp/builder_test.cpp
@@ -174,7 +174,7 @@
     ASSERT_NE(exported, nullptr);
     super_device = GetMetadataSuperBlockDevice(*exported.get());
     ASSERT_NE(super_device, nullptr);
-    EXPECT_EQ(super_device->first_logical_sector, 1472);
+    EXPECT_EQ(super_device->first_logical_sector, 1536);
 
     // Alignment offset without alignment doesn't mean anything.
     device_info.alignment = 0;
@@ -190,7 +190,7 @@
     ASSERT_NE(exported, nullptr);
     super_device = GetMetadataSuperBlockDevice(*exported.get());
     ASSERT_NE(super_device, nullptr);
-    EXPECT_EQ(super_device->first_logical_sector, 174);
+    EXPECT_EQ(super_device->first_logical_sector, 168);
 
     // Test a small alignment with no alignment offset.
     device_info.alignment = 11 * 1024;
@@ -200,7 +200,7 @@
     ASSERT_NE(exported, nullptr);
     super_device = GetMetadataSuperBlockDevice(*exported.get());
     ASSERT_NE(super_device, nullptr);
-    EXPECT_EQ(super_device->first_logical_sector, 160);
+    EXPECT_EQ(super_device->first_logical_sector, 154);
 }
 
 TEST_F(BuilderTest, InternalPartitionAlignment) {
@@ -229,12 +229,12 @@
         EXPECT_EQ(extent.num_sectors, 80);
 
         uint64_t lba = extent.target_data * LP_SECTOR_SIZE;
-        uint64_t aligned_lba = AlignTo(lba, device_info.alignment, device_info.alignment_offset);
+        uint64_t aligned_lba = AlignTo(lba, device_info.alignment);
         EXPECT_EQ(lba, aligned_lba);
     }
 
     // Sanity check one extent.
-    EXPECT_EQ(exported->extents.back().target_data, 3008);
+    EXPECT_EQ(exported->extents.back().target_data, 3072);
 }
 
 TEST_F(BuilderTest, UseAllDiskSpace) {
@@ -652,7 +652,7 @@
     };
     unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(partitions, "system_a", 65536, 2);
     ASSERT_NE(builder, nullptr);
-    EXPECT_EQ(builder->AllocatableSpace(), 467238912);
+    EXPECT_EQ(builder->AllocatableSpace(), 467402752);
 
     // Create a partition that spans 3 devices.
     Partition* p = builder->AddPartition("system_a", 0);
@@ -675,17 +675,17 @@
     EXPECT_EQ(metadata->block_devices[2].alignment, 786432);
     EXPECT_EQ(metadata->block_devices[2].alignment_offset, 753664);
     ASSERT_EQ(metadata->extents.size(), 3);
-    EXPECT_EQ(metadata->extents[0].num_sectors, 522304);
+    EXPECT_EQ(metadata->extents[0].num_sectors, 522752);
     EXPECT_EQ(metadata->extents[0].target_type, LP_TARGET_TYPE_LINEAR);
-    EXPECT_EQ(metadata->extents[0].target_data, 1984);
+    EXPECT_EQ(metadata->extents[0].target_data, 1536);
     EXPECT_EQ(metadata->extents[0].target_source, 0);
-    EXPECT_EQ(metadata->extents[1].num_sectors, 260672);
+    EXPECT_EQ(metadata->extents[1].num_sectors, 260608);
     EXPECT_EQ(metadata->extents[1].target_type, LP_TARGET_TYPE_LINEAR);
-    EXPECT_EQ(metadata->extents[1].target_data, 1472);
+    EXPECT_EQ(metadata->extents[1].target_data, 1536);
     EXPECT_EQ(metadata->extents[1].target_source, 1);
-    EXPECT_EQ(metadata->extents[2].num_sectors, 129088);
+    EXPECT_EQ(metadata->extents[2].num_sectors, 128704);
     EXPECT_EQ(metadata->extents[2].target_type, LP_TARGET_TYPE_LINEAR);
-    EXPECT_EQ(metadata->extents[2].target_data, 1472);
+    EXPECT_EQ(metadata->extents[2].target_data, 1536);
     EXPECT_EQ(metadata->extents[2].target_source, 2);
 }
 
@@ -1019,3 +1019,35 @@
     EXPECT_FALSE(extent.OverlapsWith(LinearExtent{20, 1, 15}));
     EXPECT_FALSE(extent.OverlapsWith(LinearExtent{20, 1, 10}));
 }
+
+TEST_F(BuilderTest, AlignFreeRegion) {
+    BlockDeviceInfo super("super", 8_GiB, 786432, 0, 4096);
+    std::vector<BlockDeviceInfo> block_devices = {super};
+
+    unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(block_devices, "super", 65536, 2);
+    ASSERT_NE(builder, nullptr);
+
+    Partition* p = builder->AddPartition("system", "default", 0);
+    ASSERT_NE(p, nullptr);
+    ASSERT_TRUE(builder->AddLinearExtent(p, "super", 64, (super.alignment + 4096) / 512));
+
+    p = builder->AddPartition("vendor", "default", 0);
+    ASSERT_NE(p, nullptr);
+    ASSERT_TRUE(builder->ResizePartition(p, 2_GiB));
+
+    const auto& extents = p->extents();
+    ASSERT_EQ(extents.size(), 2);
+
+    LinearExtent* e1 = extents[0]->AsLinearExtent();
+    ASSERT_NE(e1, nullptr);
+    LinearExtent* e2 = extents[1]->AsLinearExtent();
+    ASSERT_NE(e2, nullptr);
+
+    // The misaligned partition starting at sector 1544 should not cause any
+    // overlap with previous extents. We should see vendor punch a hole where
+    // "system" is, extending the hole up to the next aligned block.
+    EXPECT_EQ(e1->physical_sector(), 1536);
+    EXPECT_EQ(e1->end_sector(), 1544);
+    EXPECT_EQ(e2->physical_sector(), 3072);
+    EXPECT_EQ(e2->end_sector(), 4197368);
+}
diff --git a/fs_mgr/liblp/device_test.cpp b/fs_mgr/liblp/device_test.cpp
index 99bff6e..6af9d94 100644
--- a/fs_mgr/liblp/device_test.cpp
+++ b/fs_mgr/liblp/device_test.cpp
@@ -50,16 +50,7 @@
     // Sanity check that the device doesn't give us some weird inefficient
     // alignment.
     EXPECT_EQ(device_info.alignment % LP_SECTOR_SIZE, 0);
-    EXPECT_EQ(device_info.alignment_offset % LP_SECTOR_SIZE, 0);
-    EXPECT_LE(device_info.alignment_offset, INT_MAX);
     EXPECT_EQ(device_info.logical_block_size % LP_SECTOR_SIZE, 0);
-
-    // Having an alignment offset > alignment doesn't really make sense.
-    EXPECT_LT(device_info.alignment_offset, device_info.alignment);
-
-    if (IPropertyFetcher::GetInstance()->GetBoolProperty("ro.virtual_ab.enabled", false)) {
-        EXPECT_EQ(device_info.alignment_offset, 0);
-    }
 }
 
 TEST_F(DeviceTest, ReadSuperPartitionCurrentSlot) {
diff --git a/fs_mgr/liblp/utility.h b/fs_mgr/liblp/utility.h
index 0661769..f210eaf 100644
--- a/fs_mgr/liblp/utility.h
+++ b/fs_mgr/liblp/utility.h
@@ -78,17 +78,6 @@
     return base + (alignment - remainder);
 }
 
-// Same as the above |AlignTo|, except that |base| is only aligned when added to
-// |alignment_offset|.
-constexpr uint64_t AlignTo(uint64_t base, uint32_t alignment, uint32_t alignment_offset) {
-    uint64_t aligned = AlignTo(base, alignment) + alignment_offset;
-    if (aligned - alignment >= base) {
-        // We overaligned (base < alignment_offset).
-        return aligned - alignment;
-    }
-    return aligned;
-}
-
 // Update names from C++ strings.
 bool UpdateBlockDevicePartitionName(LpMetadataBlockDevice* device, const std::string& name);
 bool UpdatePartitionGroupName(LpMetadataPartitionGroup* group, const std::string& name);
diff --git a/fs_mgr/liblp/utility_test.cpp b/fs_mgr/liblp/utility_test.cpp
index cac3989..b64861d 100644
--- a/fs_mgr/liblp/utility_test.cpp
+++ b/fs_mgr/liblp/utility_test.cpp
@@ -64,9 +64,9 @@
     EXPECT_EQ(AlignTo(555, 1024), 1024);
     EXPECT_EQ(AlignTo(555, 1000), 1000);
     EXPECT_EQ(AlignTo(0, 1024), 0);
-    EXPECT_EQ(AlignTo(54, 32, 30), 62);
-    EXPECT_EQ(AlignTo(32, 32, 30), 62);
-    EXPECT_EQ(AlignTo(17, 32, 30), 30);
+    EXPECT_EQ(AlignTo(54, 32), 64);
+    EXPECT_EQ(AlignTo(32, 32), 32);
+    EXPECT_EQ(AlignTo(17, 32), 32);
 }
 
 TEST(liblp, GetPartitionSlotSuffix) {