From: deraadt <deraadt@openbsd.org>
Date: Sun, 6 Nov 2022 11:43:19 +0000 (+0000)
Subject: ld.so wants to make it's own RELRO immutable, which is obviously done
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=980da63b6d9b0ec6f1ae2110e48e3e48717bd222;p=openbsd

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 7d52d15ab0f..c23ea6d7ad1 100644
--- 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;
 		}
 	}