From 646d7ab12b8d69f7fc3d744a9e131304af504f2b Mon Sep 17 00:00:00 2001
From: Robert O'Callahan <robert@ocallahan.org>
Date: Sat, 17 Aug 2024 15:41:58 +1200
Subject: [PATCH] Make `PT_LOAD` explicitly read-execute and `PT_DYNAMIC`
 explicitly read-only

When we make `librrpage.so` non-absolutely positioned, the dynamic loader will try
to relocate `PT_DYNAMIC` if it's not marked read-only. The kernel's VDSO has
readonly `PT_DYNAMIC` so we're matching that.
---
 src/preload/rr_page.ld.in | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/preload/rr_page.ld.in b/src/preload/rr_page.ld.in
index ca1db312fde..3f5cf6e1a8c 100644
--- a/src/preload/rr_page.ld.in
+++ b/src/preload/rr_page.ld.in
@@ -1,9 +1,9 @@
 PHDRS
 {
-  text PT_LOAD FILEHDR PHDRS;
-  dynamic PT_DYNAMIC ;
-  note PT_NOTE ;
-  eh_frame 0x6474e550 ;
+  text PT_LOAD FLAGS(5) FILEHDR PHDRS;
+  dynamic PT_DYNAMIC FLAGS(4);
+  note PT_NOTE FLAGS(4);
+  eh_frame 0x6474e550;
   replay PT_NULL;
 }
 SECTIONS