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    Subject[PATCH 5.6 089/254] seccomp: Add missing compat_ioctl for notify
    Date
    From: Sven Schnelle <svens@linux.ibm.com>

    commit 3db81afd99494a33f1c3839103f0429c8f30cb9d upstream.

    Executing the seccomp_bpf testsuite under a 64-bit kernel with 32-bit
    userland (both s390 and x86) doesn't work because there's no compat_ioctl
    handler defined. Add the handler.

    Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
    Fixes: 6a21cc50f0c7 ("seccomp: add a return code to trap to userspace")
    Cc: stable@vger.kernel.org
    Link: https://lore.kernel.org/r/20200310123332.42255-1-svens@linux.ibm.com
    Signed-off-by: Kees Cook <keescook@chromium.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    kernel/seccomp.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/kernel/seccomp.c
    +++ b/kernel/seccomp.c
    @@ -1221,6 +1221,7 @@ static const struct file_operations secc
    .poll = seccomp_notify_poll,
    .release = seccomp_notify_release,
    .unlocked_ioctl = seccomp_notify_ioctl,
    + .compat_ioctl = seccomp_notify_ioctl,
    };

    static struct file *init_listener(struct seccomp_filter *filter)

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