--- valgrind-3.13.0/configure.ac.old	2017-06-15 13:37:01.000000000 +0000
+++ valgrind-3.13.0/configure.ac	2018-10-02 21:46:48.710000000 +0000
@@ -1034,7 +1034,7 @@
      musl)
 	AC_MSG_RESULT(Musl)
 	AC_DEFINE([MUSL_LIBC], 1, [Define to 1 if you're using Musl libc])
-	# no DEFAULT_SUPP file yet for musl libc.
+	DEFAULT_SUPP="musl.supp ${DEFAULT_SUPP}"
 	;;
      2.0|2.1|*)
 	AC_MSG_RESULT([unsupported version ${GLIBC_VERSION}])
--- /dev/null	2018-07-03 06:46:12.010000000 +0000
+++ valgrind-3.13.0/musl.supp	2018-10-02 21:44:57.240000000 +0000
@@ -0,0 +1,10 @@
+# musl does not free `dso` structs allocated during linking on exit.
+{
+   musl:dynlinker
+   Memcheck:Leak
+   match-leak-kinds: reachable
+   fun:calloc
+   ...
+   fun:__dls3
+   obj:/lib/ld-musl-*
+}