[PATCH 5.10 185/215] lkdtm/bugs: XFAIL UNALIGNED_LOAD_STORE_WRITE

[Greg Kroah-Hartman]

From: Kees Cook <keescook@xxxxxxxxxxxx>

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@xxxxxxxxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210623203936.3151093-5-keescook@xxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/misc/lkdtm/bugs.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/misc/lkdtm/bugs.c
+++ b/drivers/misc/lkdtm/bugs.c
@@ -144,6 +144,9 @@ 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)