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* [glibc/arm/gcs] aarch64: ignore GCS property of ld.so
@ 2024-02-14 15:07 Szabolcs Nagy
  0 siblings, 0 replies; only message in thread
From: Szabolcs Nagy @ 2024-02-14 15:07 UTC (permalink / raw)
  To: glibc-cvs

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=84bfdb91bded2358b2642eed3bdae3c049576eb4

commit 84bfdb91bded2358b2642eed3bdae3c049576eb4
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date:   Wed Jan 10 16:20:24 2024 +0000

    aarch64: ignore GCS property of ld.so
    
    ldso->l_mach.gcs may not be set up, just assume ldso is GCS compatible.

Diff:
---
 sysdeps/aarch64/dl-gcs.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sysdeps/aarch64/dl-gcs.c b/sysdeps/aarch64/dl-gcs.c
index 764b8a56e9..b81aa30787 100644
--- a/sysdeps/aarch64/dl-gcs.c
+++ b/sysdeps/aarch64/dl-gcs.c
@@ -32,6 +32,11 @@ fail (struct link_map *l, const char *program)
 static void
 check_gcs (struct link_map *l, const char *program)
 {
+#ifdef SHARED
+  /* Ignore GCS marking on ld.so: its properties are not processed.  */
+  if (l->l_real == &GL(dl_rtld_map))
+    return;
+#endif
   if (!l->l_mach.gcs)
     {
       if (GLRO(dl_aarch64_gcs_policy) == 2 || !program)

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