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net: sparx5: switchdev: fix possible NULL pointer dereference
authorZheng Yongjun <zhengyongjun3@huawei.com>
Sat, 26 Mar 2022 08:12:39 +0000 (08:12 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sat, 26 Mar 2022 18:49:09 +0000 (11:49 -0700)
commit0906f3a3df07835e37077d8971aac65347f2ed57
tree85f92e039959014d522db31c4a1ad70d9c79f5a3tree | snapshot
parent7781607938c8371d4c2b243527430241c62e39c2commit | diff
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>
drivers/net/ethernet/microchip/sparx5/sparx5_fdma.c diff | blob | history
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