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Date: Thu,  4 Jun 2020 16:49:57 +0300
From: Alexander Popov <alex.popov@...ux.com>
To: Kees Cook <keescook@...omium.org>,
	Emese Revfy <re.emese@...il.com>,
	Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Michal Marek <michal.lkml@...kovi.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Masahiro Yamada <yamada.masahiro@...ionext.com>,
	Thiago Jung Bauermann <bauerman@...ux.ibm.com>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Jessica Yu <jeyu@...nel.org>,
	Sven Schnelle <svens@...ckframe.org>,
	Iurii Zaikin <yzaikin@...gle.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Vincenzo Frascino <vincenzo.frascino@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Collingbourne <pcc@...gle.com>,
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	PaX Team <pageexec@...email.hu>,
	Brad Spengler <spender@...ecurity.net>,
	Laura Abbott <labbott@...hat.com>,
	Florian Weimer <fweimer@...hat.com>,
	Alexander Popov <alex.popov@...ux.com>,
	kernel-hardening@...ts.openwall.com,
	linux-kbuild@...r.kernel.org,
	x86@...nel.org,
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Cc: notify@...nel.org
Subject: [PATCH 5/5] gcc-plugins/stackleak: Don't instrument vgettimeofday.c in arm64 VDSO

Don't try instrumenting functions in arch/arm64/kernel/vdso/vgettimeofday.c.
Otherwise that can cause issues if the cleanup pass of stackleak gcc plugin
is disabled.

Signed-off-by: Alexander Popov <alex.popov@...ux.com>
---
 arch/arm64/kernel/vdso/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile
index 3862cad2410c..9b84cafbd2da 100644
--- a/arch/arm64/kernel/vdso/Makefile
+++ b/arch/arm64/kernel/vdso/Makefile
@@ -32,7 +32,8 @@ UBSAN_SANITIZE			:= n
 OBJECT_FILES_NON_STANDARD	:= y
 KCOV_INSTRUMENT			:= n
 
-CFLAGS_vgettimeofday.o = -O2 -mcmodel=tiny -fasynchronous-unwind-tables
+CFLAGS_vgettimeofday.o = -O2 -mcmodel=tiny -fasynchronous-unwind-tables \
+		$(DISABLE_STACKLEAK_PLUGIN)
 
 ifneq ($(c-gettimeofday-y),)
   CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y)
-- 
2.25.2

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