Index: lib/tsan/rtl/tsan_interceptors.cc
===================================================================
--- lib/tsan/rtl/tsan_interceptors.cc
+++ lib/tsan/rtl/tsan_interceptors.cc
@@ -510,7 +510,13 @@
   void *p = 0;
   {
     SCOPED_INTERCEPTOR_RAW(calloc, size, n);
-    p = user_alloc(thr, pc, n * size);
+    if (thr->ignore_interceptors || thr->in_ignored_lib) {
+      thr->ignore_reads_and_writes++;
+      p = user_alloc(thr, pc, n * size);
+      thr->ignore_reads_and_writes--;
+    } else {
+      p = user_alloc(thr, pc, n * size);
+    }
     if (p)
       internal_memset(p, 0, n * size);
   }