diff --git a/compiler-rt/lib/scudo/standalone/common.h b/compiler-rt/lib/scudo/standalone/common.h
--- a/compiler-rt/lib/scudo/standalone/common.h
+++ b/compiler-rt/lib/scudo/standalone/common.h
@@ -132,6 +132,10 @@
 
 const char *getEnv(const char *Name);
 
+u64 GetRSSFromBuffer(char *buf);
+
+u64 getRSS();
+
 u64 getMonotonicTime();
 
 u32 getThreadID();
diff --git a/compiler-rt/lib/scudo/standalone/internal_defs.h b/compiler-rt/lib/scudo/standalone/internal_defs.h
--- a/compiler-rt/lib/scudo/standalone/internal_defs.h
+++ b/compiler-rt/lib/scudo/standalone/internal_defs.h
@@ -88,6 +88,15 @@
 typedef int16_t s16;
 typedef int32_t s32;
 typedef int64_t s64;
+typedef int fd_t;
+
+enum FileAccessMode {
+  RdOnly,
+  WrOnly,
+  RdWr
+};
+
+#define kInvalidFd ((fd_t) -1)
 
 // The following two functions have platform specific implementations.
 void outputRaw(const char *Buffer);
diff --git a/compiler-rt/lib/scudo/standalone/linux.cpp b/compiler-rt/lib/scudo/standalone/linux.cpp
--- a/compiler-rt/lib/scudo/standalone/linux.cpp
+++ b/compiler-rt/lib/scudo/standalone/linux.cpp
@@ -19,6 +19,7 @@
 #include <fcntl.h>
 #include <linux/futex.h>
 #include <sched.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/mman.h>
@@ -168,7 +169,7 @@
 #endif // defined(SYS_getrandom)
   // Up to 256 bytes, a read off /dev/urandom will not be interrupted.
   // Blocking is moot here, O_NONBLOCK has no effect when opening /dev/urandom.
-  const int FileDesc = open("/dev/urandom", O_RDONLY);
+  const int FileDesc = open("/dev/urandom", RdOnly);
   if (FileDesc == -1)
     return false;
   ReadBytes = read(FileDesc, Buffer, Length);
@@ -180,6 +181,44 @@
 extern "C" WEAK int async_safe_write_log(int pri, const char *tag,
                                          const char *msg);
 
+s64 internal_read(fd_t fd, char *buf, size_t size) {
+  return read(fd, buf, size);
+}
+
+void internal_close(fd_t fd) { close(fd); }
+
+fd_t OpenFile(const char *FileName, int flags) { return open(FileName, flags); }
+
+u64 GetRSSFromBuffer(char *buf) {
+  // The format of the file is:
+  // 1084 89 69 11 0 79 0
+  // We need the second number which is RSS in pages.
+  char *pos = buf;
+  // Skip the first number.
+  while (*pos >= '0' && *pos <= '9')
+    pos++;
+  // Skip whitespaces.
+  while (!(*pos >= '0' && *pos <= '9') && *pos != 0)
+    pos++;
+  // Read the number.
+  u64 rss = 0;
+  while (*pos >= '0' && *pos <= '9')
+    rss = rss * 10 + (u64)(*pos)++ - '0';
+  return rss * getPageSizeCached();
+}
+
+u64 GetRSS() {
+  fd_t fd = OpenFile("/proc/self/statm", RdOnly);
+  char buf[64];
+  s64 len = internal_read(fd, buf, sizeof(buf) - 1);
+  internal_close(fd);
+  if (len <= 0)
+    return 0;
+  buf[len] = 0;
+
+  return GetRSSFromBuffer(buf);
+}
+
 void outputRaw(const char *Buffer) {
   if (&async_safe_write_log) {
     constexpr s32 AndroidLogInfo = 4;
diff --git a/compiler-rt/lib/scudo/standalone/tests/common_test.cpp b/compiler-rt/lib/scudo/standalone/tests/common_test.cpp
--- a/compiler-rt/lib/scudo/standalone/tests/common_test.cpp
+++ b/compiler-rt/lib/scudo/standalone/tests/common_test.cpp
@@ -69,4 +69,11 @@
   unmap(P, Size, 0, &Data);
 }
 
+TEST(ScudoCommonTest, GetRssFromBuffer) {
+  std::string buf = "1084 89 69 11 0 79 0";
+  auto result = scudo::GetRSSFromBuffer(buf.data());
+
+  EXPECT_EQ(result, 89 * scudo::getPageSizeCached());
+}
+
 } // namespace scudo