From 3322ecbfe29a16e74c4f584d661b0b8018bb4031 Mon Sep 17 00:00:00 2001

From: Raphael Moreira Zinsly <rzinsly@linux.ibm.com>

Date: Mon, 14 Sep 2020 11:59:24 -0300

Subject: [PATCH] powerpc: Protect dl_powerpc_cpu_features on INIT_ARCH() [BZ

 #26615]

dl_powerpc_cpu_features also needs to be protected by __GLRO to check

for the _rtld_global_ro realocation before accessing it.

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>

---

 sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h b/sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h

index 17ddfcf528..c8fa07fadc 100644

--- a/sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h

+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h

@@ -38,7 +38,7 @@

   unsigned long int hwcap = __GLRO(dl_hwcap); 			\

   unsigned long int __attribute__((unused)) hwcap2 = __GLRO(dl_hwcap2); \

   bool __attribute__((unused)) use_cached_memopt =		\

-    GLRO(dl_powerpc_cpu_features).use_cached_memopt;		\

+    __GLRO(dl_powerpc_cpu_features.use_cached_memopt);		\

   if (hwcap & PPC_FEATURE_ARCH_2_06)				\

     hwcap |= PPC_FEATURE_ARCH_2_05 |				\

 	     PPC_FEATURE_POWER5_PLUS |				\

-- 

2.27.0