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x86/cet: Check CPU_FEATURE_ACTIVE in permissive mode

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Verify that CPU_FEATURE_ACTIVE works properly in permissive mode.
This commit is contained in:
H.J. Lu 2023-03-28 13:52:36 -07:00
parent 28bd6f832d
commit 4d8a01d2b0
2 changed files with 6 additions and 0 deletions
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1
sysdeps/x86/Makefile
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@ -219,6 +219,7 @@ CFLAGS-tst-cet-legacy-mod-1.c += -fcf-protection=none
CFLAGS-tst-cet-legacy-mod-2.c += -fcf-protection=none
CFLAGS-tst-cet-legacy-3.c += -fcf-protection=none
CFLAGS-tst-cet-legacy-4.c += -fcf-protection=branch
CPPFLAGS-tst-cet-legacy-4a.c += -DCET_IS_PERMISSIVE=1
CFLAGS-tst-cet-legacy-4a.c += -fcf-protection
CFLAGS-tst-cet-legacy-4b.c += -fcf-protection
CFLAGS-tst-cet-legacy-mod-4.c += -fcf-protection=none

5
sysdeps/x86/tst-cet-legacy-4.c
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@ -21,6 +21,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/platform/x86.h>
#include <support/check.h>
@ -40,6 +41,10 @@ do_test (void)
return 0;
}
#ifdef CET_IS_PERMISSIVE
TEST_VERIFY (!CPU_FEATURE_ACTIVE (IBT) && !CPU_FEATURE_ACTIVE (SHSTK));
#endif
fp = dlsym (h, "test");
if (fp == NULL)
FAIL_EXIT1 ("cannot get symbol 'test': %s\n", dlerror ());