| Message ID | 20221205141333.3974565-1-yangyingliang@huawei.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 9e624651859214fb2c4e442b059eba0aefcd0801 |
| Headers | show |
| Series | [net] xen/netback: don't call kfree_skb() under spin_lock_irqsave() | expand |
On 05/12/2022 14:13, Yang Yingliang wrote: > It is not allowed to call kfree_skb() from hardware interrupt > context or with interrupts being disabled. So replace kfree_skb() > with dev_kfree_skb_irq() under spin_lock_irqsave(). > > Fixes: be81992f9086 ("xen/netback: don't queue unlimited number of packages") > Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Paul Durrant <paul@xen.org>
Hello: This patch was applied to netdev/net.git (master) by Paolo Abeni <pabeni@redhat.com>: On Mon, 5 Dec 2022 22:13:33 +0800 you wrote: > It is not allowed to call kfree_skb() from hardware interrupt > context or with interrupts being disabled. So replace kfree_skb() > with dev_kfree_skb_irq() under spin_lock_irqsave(). > > Fixes: be81992f9086 ("xen/netback: don't queue unlimited number of packages") > Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> > > [...] Here is the summary with links: - [net] xen/netback: don't call kfree_skb() under spin_lock_irqsave() https://git.kernel.org/netdev/net/c/9e6246518592 You are awesome, thank you!
diff --git a/drivers/net/xen-netback/rx.c b/drivers/net/xen-netback/rx.c index 932762177110..d022206a0d17 100644 --- a/drivers/net/xen-netback/rx.c +++ b/drivers/net/xen-netback/rx.c @@ -92,7 +92,7 @@ void xenvif_rx_queue_tail(struct xenvif_queue *queue, struct sk_buff *skb) struct net_device *dev = queue->vif->dev; netif_tx_stop_queue(netdev_get_tx_queue(dev, queue->id)); - kfree_skb(skb); + dev_kfree_skb_irq(skb); queue->vif->dev->stats.rx_dropped++; } else { if (skb_queue_empty(&queue->rx_queue))
It is not allowed to call kfree_skb() from hardware interrupt context or with interrupts being disabled. So replace kfree_skb() with dev_kfree_skb_irq() under spin_lock_irqsave(). Fixes: be81992f9086 ("xen/netback: don't queue unlimited number of packages") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/net/xen-netback/rx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)