82 lines
3.2 KiB
Diff
82 lines
3.2 KiB
Diff
From 7a97a9ab63a37ae1191e514258e4f6fefdc2e41b Mon Sep 17 00:00:00 2001
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From: "H.J. Lu" <hjl.tools@gmail.com>
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Date: Fri, 17 Mar 2023 16:21:49 -0700
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Subject: [PATCH v2 06/15] x86/cet: Add tests for
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GLIBC_TUNABLES=glibc.cpu.hwcaps=-SHSTK
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Verify that GLIBC_TUNABLES=glibc.cpu.hwcaps=-SHSTK turns off shadow
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stack properly.
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---
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sysdeps/x86/Makefile | 7 +++++++
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sysdeps/x86/tst-shstk-legacy-1c-static.c | 1 +
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sysdeps/x86/tst-shstk-legacy-1c.c | 20 ++++++++++++++++++++
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3 files changed, 28 insertions(+)
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create mode 100644 sysdeps/x86/tst-shstk-legacy-1c-static.c
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create mode 100644 sysdeps/x86/tst-shstk-legacy-1c.c
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diff --git a/sysdeps/x86/Makefile b/sysdeps/x86/Makefile
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index 580c3ecdc5..5f1414fba3 100644
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--- a/sysdeps/x86/Makefile
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+++ b/sysdeps/x86/Makefile
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@@ -137,10 +137,13 @@ tests += \
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tst-shstk-legacy-1a-static \
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tst-shstk-legacy-1b \
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tst-shstk-legacy-1b-static \
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+ tst-shstk-legacy-1c \
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+ tst-shstk-legacy-1c-static \
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# tests
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tests-static += \
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tst-shstk-legacy-1a-static \
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tst-shstk-legacy-1b-static \
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+ tst-shstk-legacy-1c-static \
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# tests-static
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extra-objs += \
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tst-shstk-legacy-1-extra.o \
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@@ -227,6 +230,10 @@ $(objpfx)tst-shstk-legacy-1a: $(objpfx)tst-shstk-legacy-1-extra.o
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$(objpfx)tst-shstk-legacy-1a-static: $(objpfx)tst-shstk-legacy-1-extra.o
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$(objpfx)tst-shstk-legacy-1b: $(objpfx)tst-shstk-legacy-1-extra.o
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$(objpfx)tst-shstk-legacy-1b-static: $(objpfx)tst-shstk-legacy-1-extra.o
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+tst-shstk-legacy-1c-ENV = GLIBC_TUNABLES=glibc.cpu.hwcaps=-SHSTK
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+tst-shstk-legacy-1c-static-ENV = GLIBC_TUNABLES=glibc.cpu.hwcaps=-SHSTK
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+$(objpfx)tst-shstk-legacy-1c: $(objpfx)tst-shstk-legacy-1-extra.o
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+$(objpfx)tst-shstk-legacy-1c-static: $(objpfx)tst-shstk-legacy-1-extra.o
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endif
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# Add -fcf-protection to CFLAGS when CET is enabled.
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diff --git a/sysdeps/x86/tst-shstk-legacy-1c-static.c b/sysdeps/x86/tst-shstk-legacy-1c-static.c
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new file mode 100644
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index 0000000000..91ea346aaf
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--- /dev/null
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+++ b/sysdeps/x86/tst-shstk-legacy-1c-static.c
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@@ -0,0 +1 @@
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+#include "tst-shstk-legacy-1c.c"
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diff --git a/sysdeps/x86/tst-shstk-legacy-1c.c b/sysdeps/x86/tst-shstk-legacy-1c.c
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new file mode 100644
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index 0000000000..eb218c6c70
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--- /dev/null
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+++ b/sysdeps/x86/tst-shstk-legacy-1c.c
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@@ -0,0 +1,20 @@
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+/* Check that legacy shadow stack code won't trigger segfault with
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+ GLIBC_TUNABLES=glibc.cpu.hwcaps=-SHSTK
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+ Copyright (C) 2023 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+#include "tst-shstk-legacy-1a.c"
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--
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2.40.1
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