| Message ID | 20221208142147.2376671-2-yangyingliang@huawei.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | d1678bf45f21fa5ae4a456f821858679556ea5f8 |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: don't call dev_kfree_skb() under spin_lock_irqsave() | expand |
diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c index a3967f8de417..a1e1387ea84e 100644 --- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c +++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c @@ -536,7 +536,7 @@ static void xemaclite_tx_timeout(struct net_device *dev, unsigned int txqueue) xemaclite_enable_interrupts(lp); if (lp->deferred_skb) { - dev_kfree_skb(lp->deferred_skb); + dev_kfree_skb_irq(lp->deferred_skb); lp->deferred_skb = NULL; dev->stats.tx_errors++; }
It is not allowed to call kfree_skb() or consume_skb() from hardware interrupt context or with hardware interrupts being disabled. It should use dev_kfree_skb_irq() or dev_consume_skb_irq() instead. The difference between them is free reason, dev_kfree_skb_irq() means the SKB is dropped in error and dev_consume_skb_irq() means the SKB is consumed in normal. In this case, dev_kfree_skb() is called in xemaclite_tx_timeout() to drop the SKB, when tx timeout, so replace it with dev_kfree_skb_irq(). Fixes: bb81b2ddfa19 ("net: add Xilinx emac lite device driver") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/net/ethernet/xilinx/xilinx_emaclite.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)