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From 608fc7bcda43e60536ae1f19842f7affba8f0aea Mon Sep 17 00:00:00 2001
From: Martin Doucha <mdoucha@suse.cz>
Date: Wed, 1 Jun 2022 16:16:34 +0200
Subject: [PATCH] kvm: Fix stack access mode in KVM test ELF headers
When the linker converts guest payload binary into a linkable resource
object file, it somehow defaults to requesting executable stack section
for the final test binary. This trips some build-time security checks
on newer systems. Add explicit linker option to make the stack
non-executable.
Suggested-by: Fabian Vogt <fvogt@suse.com>
Signed-off-by: Martin Doucha <mdoucha@suse.cz>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Upstream-Status: Backport [https://github.com/linux-test-project/ltp/commit/f9715d7c2e78713e26533c6e0846aaabf5c4095b]
---
testcases/kernel/kvm/Makefile | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/testcases/kernel/kvm/Makefile b/testcases/kernel/kvm/Makefile
index 69a9946fe..adab56952 100644
--- a/testcases/kernel/kvm/Makefile
+++ b/testcases/kernel/kvm/Makefile
@@ -50,11 +50,11 @@ include $(top_srcdir)/include/mk/generic_leaf_target.mk
ifdef VERBOSE
$(CC) $(GUEST_CPPFLAGS) $(GUEST_CFLAGS) $(GUEST_LDFLAGS) -o $*-payload.elf $^ $(GUEST_LDLIBS)
objcopy -O binary -j .init.boot -j .text -j .data -j .init -j .preinit_array -j .init_array --gap-fill=0 $*-payload.elf $*-payload.bin
- ld -r -T $(abs_srcdir)/linker/payload.lds --oformat=$(BIN_FORMAT) -o $@ $*-payload.bin
+ ld -z noexecstack -r -T $(abs_srcdir)/linker/payload.lds --oformat=$(BIN_FORMAT) -o $@ $*-payload.bin
else
@$(CC) $(GUEST_CPPFLAGS) $(GUEST_CFLAGS) $(GUEST_LDFLAGS) -o $*-payload.elf $^ $(GUEST_LDLIBS)
@objcopy -O binary -j .init.boot -j .text -j .data -j .init -j .preinit_array -j .init_array --gap-fill=0 $*-payload.elf $*-payload.bin
- @ld -r -T $(abs_srcdir)/linker/payload.lds --oformat=$(BIN_FORMAT) -o $@ $*-payload.bin
+ @ld -z noexecstack -r -T $(abs_srcdir)/linker/payload.lds --oformat=$(BIN_FORMAT) -o $@ $*-payload.bin
@echo KVM_CC $(target_rel_dir)$@
endif
@rm $*-payload.elf $*-payload.bin
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