diff --git a/compiler-rt/lib/lsan/lsan_common.cc b/compiler-rt/lib/lsan/lsan_common.cc
index 69ffda539a26..19e22fb615bb 100644
--- a/compiler-rt/lib/lsan/lsan_common.cc
+++ b/compiler-rt/lib/lsan/lsan_common.cc
@@ -216,7 +216,8 @@ static void ProcessThreads(SuspendedThreadsList const &suspended_threads,
                            Frontier *frontier) {
   InternalScopedBuffer<uptr> registers(suspended_threads.RegisterCount());
   uptr registers_begin = reinterpret_cast<uptr>(registers.data());
-  uptr registers_end = registers_begin + registers.size();
+  uptr registers_end =
+      reinterpret_cast<uptr>(registers.data() + registers.size());
   for (uptr i = 0; i < suspended_threads.ThreadCount(); i++) {
     tid_t os_id = static_cast<tid_t>(suspended_threads.GetThreadID(i));
     LOG_THREADS("Processing thread %d.\n", os_id);
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common.h b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
index 4c28659edf37..d60112032de5 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
@@ -165,7 +165,7 @@ class InternalScopedBuffer {
   ~InternalScopedBuffer() { UnmapOrDie(ptr_, cnt_ * sizeof(T)); }
   T &operator[](uptr i) { return ptr_[i]; }
   T *data() { return ptr_; }
-  uptr size() { return cnt_ * sizeof(T); }
+  uptr size() { return cnt_; }
 
  private:
   T *ptr_;
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
index 94bc9ffff6d0..ce8a18b7da09 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
@@ -958,9 +958,8 @@ bool ThreadLister::error() { return error_; }
 bool ThreadLister::GetDirectoryEntries() {
   CHECK_GE(descriptor_, 0);
   CHECK_NE(error_, true);
-  bytes_read_ = internal_getdents(descriptor_,
-                                  (struct linux_dirent *)buffer_.data(),
-                                  buffer_.size());
+  bytes_read_ = internal_getdents(
+      descriptor_, (struct linux_dirent *)buffer_.data(), buffer_.size());
   if (internal_iserror(bytes_read_)) {
     Report("Can't read directory entries from /proc/%d/task.\n", pid_);
     error_ = true;
diff --git a/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc b/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc
index cc7892b639a5..6db2c9484fc7 100644
--- a/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc
+++ b/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc
@@ -814,10 +814,10 @@ TEST(Allocator, ScopedBuffer) {
   const int kSize = 512;
   {
     InternalScopedBuffer<int> int_buf(kSize);
-    EXPECT_EQ(sizeof(int) * kSize, int_buf.size());  // NOLINT
+    EXPECT_EQ((uptr)kSize, int_buf.size()); // NOLINT
   }
   InternalScopedBuffer<char> char_buf(kSize);
-  EXPECT_EQ(sizeof(char) * kSize, char_buf.size());  // NOLINT
+  EXPECT_EQ((uptr)kSize, char_buf.size()); // NOLINT
   internal_memset(char_buf.data(), 'c', kSize);
   for (int i = 0; i < kSize; i++) {
     EXPECT_EQ('c', char_buf[i]);
diff --git a/compiler-rt/lib/tsan/rtl/tsan_platform_linux.cc b/compiler-rt/lib/tsan/rtl/tsan_platform_linux.cc
index 041a09fd9e29..df093f3514e0 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_platform_linux.cc
+++ b/compiler-rt/lib/tsan/rtl/tsan_platform_linux.cc
@@ -172,7 +172,7 @@ static void MapRodata() {
   // volatile to prevent insertion of memset
   for (volatile u64 *p = marker.data(); p < marker.data() + kMarkerSize; p++)
     *p = kShadowRodata;
-  internal_write(fd, marker.data(), marker.size());
+  internal_write(fd, marker.data(), marker.size() * sizeof(u64));
   // Map the file into memory.
   uptr page = internal_mmap(0, GetPageSizeCached(), PROT_READ | PROT_WRITE,
                             MAP_PRIVATE | MAP_ANONYMOUS, fd, 0);
@@ -191,8 +191,9 @@ static void MapRodata() {
       // Assume it's .rodata
       char *shadow_start = (char *)MemToShadow(segment.start);
       char *shadow_end = (char *)MemToShadow(segment.end);
-      for (char *p = shadow_start; p < shadow_end; p += marker.size()) {
-        internal_mmap(p, Min<uptr>(marker.size(), shadow_end - p),
+      for (char *p = shadow_start; p < shadow_end;
+           p += marker.size() * sizeof(u64)) {
+        internal_mmap(p, Min<uptr>(marker.size() * sizeof(u64), shadow_end - p),
                       PROT_READ, MAP_PRIVATE | MAP_FIXED, fd, 0);
       }
     }