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[V1,net,3/8] net: ena: fix: Free napi resources when ena_up() fails

Message ID 20190501134710.8938-4-sameehj@amazon.com
State Accepted
Delegated to: David Miller
Headers show
Series Bug fixes for ENA Ethernet driver | expand

Commit Message

Jubran, Samih May 1, 2019, 1:47 p.m. UTC 
From: Sameeh Jubran <sameehj@amazon.com>

ena_up() calls ena_init_napi() but does not call ena_del_napi() in
case of failure. This causes a segmentation fault upon rmmod when
netif_napi_del() is called. Fix this bug by calling ena_del_napi()
before returning error from ena_up().

Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)")

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
---
 drivers/net/ethernet/amazon/ena/ena_netdev.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index dbcd58ebd0a9..03244155f74c 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -1825,6 +1825,7 @@  static int ena_up(struct ena_adapter *adapter)
 err_setup_tx:
 	ena_free_io_irq(adapter);
 err_req_irq:
+	ena_del_napi(adapter);
 
 	return rc;
 }