diff options
| author | Quentin Perret | 2021-07-27 11:11:02 +0100 |
|---|---|---|
| committer | Peter Zijlstra | 2021-08-04 15:16:44 +0200 |
| commit | 7ad721bf10718a4e480a27ded8bb16b8f6feb2d1 (patch) | |
| tree | da0f52c204a3d0c567d86a1b289de73036da05a2 /kernel/sched | |
| parent | f95091536f78971b269ec321b057b8d630b0ad8a (diff) | |
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@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210727101103.2729607-3-qperret@google.com
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 6c562ad1ad5d..314f70db3e5c 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 /* |