[PATCH 5.13 228/266] lkdtm/bugs: XFAIL UNALIGNED_LOAD_STORE_WRITE

Greg Kroah-Hartman
2021-07-15T19:43:34Z

From: Kees Cook <keescook@chromium.org>

commit a15676ac8f24a9ac5fd881cf17be4be13fa0910a upstream.

When built under CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS, this test is
expected to fail (i.e. not trip an exception).

Fixes: 46d1a0f03d66 ("selftests/lkdtm: Add tests for LKDTM targets")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210623203936.3151093-5-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/misc/lkdtm/bugs.c | 3 +++
1 file changed, 3 insertions(+)

--- a/drivers/misc/lkdtm/bugs.c
+++ b/drivers/misc/lkdtm/bugs.c
@@ -161,6 +161,9 @@ void lkdtm_UNALIGNED_LOAD_STORE_WRITE(vo
if (*p == 0)
val = 0x87654321;
*p = val;
+
+ if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS))
+ pr_err("XFAIL: arch has CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS\n");
}

void lkdtm_SOFTLOCKUP(void)