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    Subject[PATCH 4.14 69/95] seccomp: Use PR_SPEC_FORCE_DISABLE
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

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

    From: Thomas Gleixner <tglx@linutronix.de>

    commit b849a812f7eb92e96d1c8239b06581b2cfd8b275 upstream

    Use PR_SPEC_FORCE_DISABLE in seccomp() because seccomp does not allow to
    widen restrictions.

    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    kernel/seccomp.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/kernel/seccomp.c
    +++ b/kernel/seccomp.c
    @@ -239,7 +239,7 @@ static inline void spec_mitigate(struct
    int state = arch_prctl_spec_ctrl_get(task, which);

    if (state > 0 && (state & PR_SPEC_PRCTL))
    - arch_prctl_spec_ctrl_set(task, which, PR_SPEC_DISABLE);
    + arch_prctl_spec_ctrl_set(task, which, PR_SPEC_FORCE_DISABLE);
    }

    static inline void seccomp_assign_mode(struct task_struct *task,

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