Index: lib/libc/gen/sysctlgetmibinfo.c
===================================================================
RCS file: /cvsroot/src/lib/libc/gen/sysctlgetmibinfo.c,v
retrieving revision 1.13
diff -u -r1.13 sysctlgetmibinfo.c
--- lib/libc/gen/sysctlgetmibinfo.c	30 Sep 2016 06:22:21 -0000	1.13
+++ lib/libc/gen/sysctlgetmibinfo.c	27 Aug 2019 14:37:43 -0000
@@ -386,16 +386,16 @@
  * the mib while parsing, and you should try again.  in the case of an
  * invalid node name, cname will be set to contain the offending name.
  */
-#ifdef _REENTRANT
+#if defined(_REENTRANT) && !defined(RUMP_ACTION)
 static mutex_t sysctl_mutex = MUTEX_INITIALIZER;
 static int sysctlgetmibinfo_unlocked(const char *, int *, u_int *, char *,
 				     size_t *, struct sysctlnode **, int);
-#endif /* __REENTRANT */
+#endif /* __REENTRANT && !RUMP_ACTION */
 
 int
 sysctlgetmibinfo(const char *gname, int *iname, u_int *namelenp,
 		 char *cname, size_t *csz, struct sysctlnode **rnode, int v)
-#ifdef _REENTRANT
+#if defined(_REENTRANT) && !defined(RUMP_ACTION)
 {
 	int rc;
 
@@ -411,7 +411,7 @@
 sysctlgetmibinfo_unlocked(const char *gname, int *iname, u_int *namelenp,
 			  char *cname, size_t *csz, struct sysctlnode **rnode,
 			  int v)
-#endif /* _REENTRANT */
+#endif /* _REENTRANT && !RUMP_ACTION */
 {
 	struct sysctlnode *pnode, *node;
 	int name[CTL_MAXNAME], n, haven;