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| author | Konstantin Khlebnikov <khlebnikov@yandex-team.ru> | 2019-02-27 11:10:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-31 06:46:19 -0700 |
| commit | 925275d0cc5d3710a4c06b043d5563015595616b (patch) | |
| tree | 165fb3ddabf327be0e2a618686dcfb62473fd558 /kernel/sched/rt.c | |
| parent | 4e4d5cea79a7ec06844981b1db87d431bddcf50b (diff) | |
| download | linux-stable-925275d0cc5d3710a4c06b043d5563015595616b.tar.gz linux-stable-925275d0cc5d3710a4c06b043d5563015595616b.tar.bz2 linux-stable-925275d0cc5d3710a4c06b043d5563015595616b.zip | |
sched/core: Check quota and period overflow at usec to nsec conversion
[ Upstream commit 1a8b4540db732ca16c9e43ac7c08b1b8f0b252d8 ]
Large values could overflow u64 and pass following sanity checks.
# echo 18446744073750000 > cpu.cfs_period_us
# cat cpu.cfs_period_us
40448
# echo 18446744073750000 > cpu.cfs_quota_us
# cat cpu.cfs_quota_us
40448
After this patch they will fail with -EINVAL.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/155125502079.293431.3947497929372138600.stgit@buzz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel/sched/rt.c')
0 files changed, 0 insertions, 0 deletions