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    Subject[PATCH 5.10 185/215] lkdtm/bugs: XFAIL UNALIGNED_LOAD_STORE_WRITE
    Date
    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
    @@ -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)

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