netdev - Re: [PATCH net-next] ionic: fix a sleeping in atomic bug

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Date:   Fri, 3 Sep 2021 08:14:25 -0700
From:   Shannon Nelson <snelson@...sando.io>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     drivers@...sando.io, "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Allen Hubbe <allenbh@...sando.io>, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH net-next] ionic: fix a sleeping in atomic bug

On 9/3/21 6:18 AM, Dan Carpenter wrote:
> This code is holding spin_lock_bh(&lif->rx_filters.lock); so the
> allocation needs to be atomic.
>
> Fixes: 969f84394604 ("ionic: sync the filters in the work task")
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

Signed-off-by: Shannon Nelson <snelson@...sando.io>

> ---
>   drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c b/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c
> index 7e3a5634c161..25ecfcfa1281 100644
> --- a/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c
> +++ b/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c
> @@ -318,7 +318,7 @@ void ionic_rx_filter_sync(struct ionic_lif *lif)
>   			if (f->state == IONIC_FILTER_STATE_NEW ||
>   			    f->state == IONIC_FILTER_STATE_OLD) {
>   				sync_item = devm_kzalloc(dev, sizeof(*sync_item),
> -							 GFP_KERNEL);
> +							 GFP_ATOMIC);
>   				if (!sync_item)
>   					goto loop_out;
>