From: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date: Wed, 10 Jan 2024 16:20:24 +0000 (+0000)
Subject: aarch64: Ignore GCS property of ld.so
X-Git-Tag: glibc-2.41~39
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=29476485f90a0c3460149349367a45085cc57c65;p=thirdparty%2Fglibc.git

aarch64: Ignore GCS property of ld.so

check_gcs is called for each dependency of a DSO, but the GNU property
of the ld.so is not processed so ldso->l_mach.gcs may not be correct.
Just assume ld.so is GCS compatible independently of the ELF marking.

Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
---

diff --git a/sysdeps/aarch64/dl-gcs.c b/sysdeps/aarch64/dl-gcs.c
index 28febf93cd..4ac86a5d6f 100644
--- a/sysdeps/aarch64/dl-gcs.c
+++ b/sysdeps/aarch64/dl-gcs.c
@@ -53,6 +53,11 @@ unsupported (void)
 static bool
 check_gcs (struct link_map *l, const char *program, bool enforced)
 {
+#ifdef SHARED
+  /* Ignore GCS marking on ld.so: its properties are not processed.  */
+  if (is_rtld_link_map (l->l_real))
+    return true;
+#endif
   /* Binary is marked, all good.  */
   if (l->l_mach.gcs)
     return true;