diff --git a/compiler-rt/lib/lsan/lsan_interceptors.cpp b/compiler-rt/lib/lsan/lsan_interceptors.cpp
--- a/compiler-rt/lib/lsan/lsan_interceptors.cpp
+++ b/compiler-rt/lib/lsan/lsan_interceptors.cpp
@@ -476,6 +476,15 @@
   return res;
 }
 
+INTERCEPTOR(int, pthread_detach, void *th) {
+  ENSURE_LSAN_INITED;
+  int tid = ThreadTid((uptr)th);
+  int res = REAL(pthread_detach)(th);
+  if (res == 0)
+    ThreadDetach(tid);
+  return res;
+}
+
 INTERCEPTOR(void, _exit, int status) {
   if (status == 0 && HasReportedLeaks()) status = common_flags()->exitcode;
   REAL(_exit)(status);
@@ -508,6 +517,7 @@
   LSAN_MAYBE_INTERCEPT_MALLINFO;
   LSAN_MAYBE_INTERCEPT_MALLOPT;
   INTERCEPT_FUNCTION(pthread_create);
+  INTERCEPT_FUNCTION(pthread_detach);
   INTERCEPT_FUNCTION(pthread_join);
   INTERCEPT_FUNCTION(_exit);
 
diff --git a/compiler-rt/lib/lsan/lsan_thread.h b/compiler-rt/lib/lsan/lsan_thread.h
--- a/compiler-rt/lib/lsan/lsan_thread.h
+++ b/compiler-rt/lib/lsan/lsan_thread.h
@@ -46,6 +46,7 @@
 
 u32 ThreadCreate(u32 tid, uptr uid, bool detached, void *arg = nullptr);
 void ThreadFinish();
+void ThreadDetach(u32 tid);
 void ThreadJoin(u32 tid);
 u32 ThreadTid(uptr uid);
 
diff --git a/compiler-rt/lib/lsan/lsan_thread.cpp b/compiler-rt/lib/lsan/lsan_thread.cpp
--- a/compiler-rt/lib/lsan/lsan_thread.cpp
+++ b/compiler-rt/lib/lsan/lsan_thread.cpp
@@ -83,6 +83,11 @@
   return thread_registry->FindThread(FindThreadByUid, (void *)uid);
 }
 
+void ThreadDetach(u32 tid) {
+  CHECK_NE(tid, kInvalidTid);
+  thread_registry->DetachThread(tid, /* arg */ nullptr);
+}
+
 void ThreadJoin(u32 tid) {
   CHECK_NE(tid, kInvalidTid);
   thread_registry->JoinThread(tid, /* arg */ nullptr);