ld.so wants to make it's own RELRO immutable, which is obviously done

right after it does mprotect PROT_READ.

diff --git a/libexec/ld.so/loader.c b/libexec/ld.so/loader.c
index 7d52d15..c23ea6d 100644 (file)
--- a/libexec/ld.so/loader.c
+++ b/libexec/ld.so/loader.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: loader.c,v 1.198 2022/11/06 11:38:54 deraadt Exp $ */
+/*     $OpenBSD: loader.c,v 1.199 2022/11/06 11:43:19 deraadt Exp $ */
 
 /*
  * Copyright (c) 1998 Per Fogelstrom, Opsycon AB
@@ -436,6 +436,8 @@ _dl_self_relro(long loff)
                case PT_GNU_RELRO:
                        _dl_mprotect((void *)(phdp->p_vaddr + loff),
                            phdp->p_memsz, PROT_READ);
+                       _dl_mimmutable((void *)(phdp->p_vaddr + loff),
+                           phdp->p_memsz);
                        break;
                }
        }