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authorSiddhesh Poyarekar <siddhesh@sourceware.org>2021-03-15 20:24:45 +0530
committerSiddhesh Poyarekar <siddhesh@sourceware.org>2021-03-15 20:24:45 +0530
commit941ea10f8099cb4fcc98c65249fc17a63fcff6a4 (patch)
tree4482a878b1246d1f83de352d855d0e31704f9ca1 /sysdeps/x86/Makefile
parent03f42a56eb4e88601ebb334787c8198156197b29 (diff)
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Build get-cpuid-feature-leaf.c without stack-protector [BZ #27555]
__x86_get_cpuid_feature_leaf is called during early startup, before
the stack check guard is initialized and is hence not safe to build
with stack-protector.

Additionally, IFUNC resolvers for static tst-ifunc-isa tests get
called too early for stack protector to be useful, so fix them to
disable stack protector for the resolver functions.

This fixes all failures seen with --enable-stack-protector=all
configuration.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/x86/Makefile')
-rw-r--r--sysdeps/x86/Makefile2
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/x86/Makefile b/sysdeps/x86/Makefile
index 06c9f84f51..3ca7bfefe4 100644
--- a/sysdeps/x86/Makefile
+++ b/sysdeps/x86/Makefile
@@ -7,6 +7,8 @@ sysdep_routines += get-cpuid-feature-leaf
 sysdep-dl-routines += dl-get-cpu-features
 sysdep_headers += sys/platform/x86.h
 
+CFLAGS-get-cpuid-feature-leaf.o += $(no-stack-protector)
+
 tests += tst-get-cpu-features tst-get-cpu-features-static \
 	 tst-cpu-features-cpuinfo tst-cpu-features-cpuinfo-static \
 	 tst-cpu-features-supports tst-cpu-features-supports-static