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net/ena/base: check null meta desc

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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>
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Michal Krawczyk 2020-09-17 07:30:30 +02:00 committed by Ferruh Yigit
parent 39f817d081
commit 4ad61424aa
1 changed files with 3 additions and 0 deletions
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drivers/net/ena/base/ena_eth_com.c
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@ -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;