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net: dsa: qca8k: Add check for skb_copy

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[ Upstream commit 87355b7c3da9bfd81935caba0ab763355147f7b0 ]

Add check for the return value of skb_copy in order to avoid NULL pointer
dereference.

Fixes: 2cd5485663 ("net: dsa: qca8k: add support for phy read/write with mgmt Ethernet")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiasheng Jiang 2023-07-10 09:39:07 +08:00 committed by Greg Kroah-Hartman
parent 436b7cc7ea
commit 89726b0303
1 changed files with 3 additions and 0 deletions
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3
drivers/net/dsa/qca/qca8k-8xxx.c
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@ -469,6 +469,9 @@ qca8k_phy_eth_busy_wait(struct qca8k_mgmt_eth_data *mgmt_eth_data,
bool ack;
int ret;
if (!skb)
return -ENOMEM;
reinit_completion(&mgmt_eth_data->rw_done);
/* Increment seq_num and set it in the copy pkt */