diff --git a/compiler-rt/lib/dfsan/dfsan_custom.cpp b/compiler-rt/lib/dfsan/dfsan_custom.cpp
--- a/compiler-rt/lib/dfsan/dfsan_custom.cpp
+++ b/compiler-rt/lib/dfsan/dfsan_custom.cpp
@@ -892,6 +892,20 @@
   return ret;
 }
 
+SANITIZER_INTERFACE_ATTRIBUTE int __dfsw_getsockopt(
+    int sockfd, int level, int optname, void *optval, socklen_t *optlen,
+    dfsan_label sockfd_label, dfsan_label level_label,
+    dfsan_label optname_label, dfsan_label optval_label,
+    dfsan_label optlen_label, dfsan_label *ret_label) {
+  int ret = getsockopt(sockfd, level, optname, optval, optlen);
+  if (ret != -1 && optval && optlen) {
+    dfsan_set_label(0, optlen, sizeof(*optlen));
+    dfsan_set_label(0, optval, *optlen);
+  }
+  *ret_label = 0;
+  return ret;
+}
+
 // Type of the trampoline function passed to the custom version of
 // dfsan_set_write_callback.
 typedef void (*write_trampoline_t)(
diff --git a/compiler-rt/lib/dfsan/done_abilist.txt b/compiler-rt/lib/dfsan/done_abilist.txt
--- a/compiler-rt/lib/dfsan/done_abilist.txt
+++ b/compiler-rt/lib/dfsan/done_abilist.txt
@@ -192,6 +192,7 @@
 fun:gethostname=custom
 fun:getrlimit=custom
 fun:getrusage=custom
+fun:getsockopt=custom
 fun:nanosleep=custom
 fun:pread=custom
 fun:read=custom
diff --git a/compiler-rt/test/dfsan/custom.cpp b/compiler-rt/test/dfsan/custom.cpp
--- a/compiler-rt/test/dfsan/custom.cpp
+++ b/compiler-rt/test/dfsan/custom.cpp
@@ -895,6 +895,25 @@
   ASSERT_READ_ZERO_LABEL(fd, sizeof(fd));
 }
 
+void test_getsockopt() {
+  int sockfd = socket(AF_UNIX, SOCK_DGRAM, 0);
+  assert(sockfd != -1);
+
+  int optval = -1;
+  socklen_t optlen = sizeof(optval);
+  dfsan_set_label(i_label, &optval, sizeof(optval));
+  dfsan_set_label(i_label, &optlen, sizeof(optlen));
+  int ret = getsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &optval, &optlen);
+  assert(ret != -1);
+  assert(optval == 0);
+  assert(optlen == sizeof(optval));
+  ASSERT_ZERO_LABEL(ret);
+  ASSERT_ZERO_LABEL(optval);
+  ASSERT_ZERO_LABEL(optlen);
+
+  close(sockfd);
+}
+
 void test_write() {
   int fd = open("/dev/null", O_WRONLY);
 
@@ -1077,6 +1096,7 @@
   test_getpwuid_r();
   test_getrlimit();
   test_getrusage();
+  test_getsockopt();
   test_gettimeofday();
   test_inet_pton();
   test_localtime_r();