diff options
| author | Zheng Yongjun <zhengyongjun3@huawei.com> | 2022-03-26 11:12:39 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-03-26 21:49:09 +0300 |
| commit | 0906f3a3df07835e37077d8971aac65347f2ed57 (patch) | |
| tree | 85f92e039959014d522db31c4a1ad70d9c79f5a3 /drivers | |
| parent | 7781607938c8371d4c2b243527430241c62e39c2 (diff) | |
| download | linux-0906f3a3df07835e37077d8971aac65347f2ed57.tar.xz | |
net: sparx5: switchdev: fix possible NULL pointer dereference
As the possible failure of the allocation, devm_kzalloc() may return NULL
pointer.
Therefore, it should be better to check the 'db' in order to prevent
the dereference of NULL pointer.
Fixes: 10615907e9b51 ("net: sparx5: switchdev: adding frame DMA functionality")
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/microchip/sparx5/sparx5_fdma.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_fdma.c b/drivers/net/ethernet/microchip/sparx5/sparx5_fdma.c index 2dc87584023a..1e9ff365459e 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_fdma.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_fdma.c @@ -422,6 +422,8 @@ static int sparx5_fdma_tx_alloc(struct sparx5 *sparx5) db_hw->dataptr = phys; db_hw->status = 0; db = devm_kzalloc(sparx5->dev, sizeof(*db), GFP_KERNEL); + if (!db) + return -ENOMEM; db->cpu_addr = cpu_addr; list_add_tail(&db->list, &tx->db_list); } |