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[15/20] net/ena/base: add check for meta desc being NULL

Message ID 20200917053035.1889989-16-mk@semihalf.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers show
Series Upgrade HAL and add ENI metrics support | expand


Context Check Description
ci/checkpatch success coding style OK

Commit Message

Michał Krawczyk Sept. 17, 2020, 5:30 a.m. UTC
Static code analysis showed up, that it's possible for meta_desc being
NULL. To avoid dereference of the NULL pointer, extra check was added if
the pointer is in fact valid.

Signed-off-by: Michal Krawczyk <mk@semihalf.com>
Reviewed-by: Igor Chauskin <igorch@amazon.com>
Reviewed-by: Guy Tzalik <gtzalik@amazon.com>
 drivers/net/ena/base/ena_eth_com.c | 3 +++
 1 file changed, 3 insertions(+)
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diff --git a/drivers/net/ena/base/ena_eth_com.c b/drivers/net/ena/base/ena_eth_com.c
index 9c4e6133f5..b6821a7917 100644
--- a/drivers/net/ena/base/ena_eth_com.c
+++ b/drivers/net/ena/base/ena_eth_com.c
@@ -268,6 +268,9 @@  static int ena_com_create_meta(struct ena_com_io_sq *io_sq,
 	struct ena_eth_io_tx_meta_desc *meta_desc = NULL;
 	meta_desc = get_sq_desc(io_sq);
+	if (unlikely(!meta_desc))
+		return ENA_COM_FAULT;
 	memset(meta_desc, 0x0, sizeof(struct ena_eth_io_tx_meta_desc));
 	meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_META_DESC_MASK;