3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Peter Zijlstra <peterz@xxxxxxxxxxxxx> commit dbdb22754fde671dc93d2fae06f8be113d47f2fb upstream. The scheduler uses policy=-1 to preserve the current policy state to implement sys_sched_setparam(), this got exposed to userspace by accident through sys_sched_setattr(), cure this. Reported-by: Michael Kerrisk <mtk.manpages@xxxxxxxxx> Signed-off-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Acked-by: Michael Kerrisk <mtk.manpages@xxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Link: http://lkml.kernel.org/r/20140509085311.GJ30445@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- kernel/sched/core.c | 3 +++ 1 file changed, 3 insertions(+) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3683,6 +3683,9 @@ SYSCALL_DEFINE3(sched_setattr, pid_t, pi if (sched_copy_attr(uattr, &attr)) return -EFAULT; + if (attr.sched_policy < 0) + return -EINVAL; + rcu_read_lock(); retval = -ESRCH; p = find_process_by_pid(pid); -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html