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* [glibc] powerpc: Protect dl_powerpc_cpu_features on INIT_ARCH() [BZ #26615]
@ 2020-09-22 20:47 Tulio Magno Quites Machado Filho
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From: Tulio Magno Quites Machado Filho @ 2020-09-22 20:47 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3322ecbfe29a16e74c4f584d661b0b8018bb4031
commit 3322ecbfe29a16e74c4f584d661b0b8018bb4031
Author: Raphael Moreira Zinsly <rzinsly@linux.ibm.com>
Date: Mon Sep 14 11:59:24 2020 -0300
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>
Diff:
---
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 | \
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2020-09-22 20:47 [glibc] powerpc: Protect dl_powerpc_cpu_features on INIT_ARCH() [BZ #26615] Tulio Magno Quites Machado Filho
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