diff options
Diffstat (limited to 'drivers/dma/idxd/sysfs.c')
| -rw-r--r-- | drivers/dma/idxd/sysfs.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c index 85644e5bde83..163fdfaa5022 100644 --- a/drivers/dma/idxd/sysfs.c +++ b/drivers/dma/idxd/sysfs.c @@ -1605,7 +1605,8 @@ static ssize_t event_log_size_store(struct device *dev, if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) return -EPERM; - if (val < IDXD_EVL_SIZE_MIN || val > IDXD_EVL_SIZE_MAX) + if (val < IDXD_EVL_SIZE_MIN || val > IDXD_EVL_SIZE_MAX || + (val * evl_ent_size(idxd) > ULONG_MAX - idxd->evl->dma)) return -EINVAL; idxd->evl->size = val; |