The following commit has been merged into the sched/core branch of tip: Commit-ID: 7ad721bf10718a4e480a27ded8bb16b8f6feb2d1 Gitweb: https://git.kernel.org/tip/7ad721bf10718a4e480a27ded8bb16b8f6feb2d1 Author: Quentin Perret <qperret@xxxxxxxxxx> AuthorDate: Tue, 27 Jul 2021 11:11:02 +01:00 Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx> CommitterDate: Wed, 04 Aug 2021 15:16:44 +02:00 sched: Don't report SCHED_FLAG_SUGOV in sched_getattr() SCHED_FLAG_SUGOV is supposed to be a kernel-only flag that userspace cannot interact with. However, sched_getattr() currently reports it in sched_flags if called on a sugov worker even though it is not actually defined in a UAPI header. To avoid this, make sure to clean-up the sched_flags field in sched_getattr() before returning to userspace. Signed-off-by: Quentin Perret <qperret@xxxxxxxxxx> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20210727101103.2729607-3-qperret@xxxxxxxxxx --- kernel/sched/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 6c562ad..314f70d 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7530,6 +7530,7 @@ SYSCALL_DEFINE4(sched_getattr, pid_t, pid, struct sched_attr __user *, uattr, kattr.sched_priority = p->rt_priority; else kattr.sched_nice = task_nice(p); + kattr.sched_flags &= SCHED_FLAG_ALL; #ifdef CONFIG_UCLAMP_TASK /*
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