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    Subject[PATCH 4.9 15/77] console/dummy: leave .con_font_get set to NULL
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Nicolas Pitre <nicolas.pitre@linaro.org>

    commit 724ba8b30b044aa0d94b1cd374fc15806cdd6f18 upstream.

    When this method is set, the caller expects struct console_font fields
    to be properly initialized when it returns. Leave it unset otherwise
    nonsensical (leaked kernel stack) values are returned to user space.

    Signed-off-by: Nicolas Pitre <nico@linaro.org>
    Cc: stable@vger.kernel.org
    Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/video/console/dummycon.c | 1 -
    1 file changed, 1 deletion(-)

    --- a/drivers/video/console/dummycon.c
    +++ b/drivers/video/console/dummycon.c
    @@ -67,7 +67,6 @@ const struct consw dummy_con = {
    .con_switch = DUMMY,
    .con_blank = DUMMY,
    .con_font_set = DUMMY,
    - .con_font_get = DUMMY,
    .con_font_default = DUMMY,
    .con_font_copy = DUMMY,
    };

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