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Date:   Sat,  1 Oct 2022 01:57:25 +0800
From:   Zheng Wang <>
Cc:,,,,,,,,, Zheng Wang <>
Subject: [PATCH] eth: sp7021: fix use after free bug in spl2sw_nvmem_get_mac_address

This frees "mac" and tries to display its address as part of the error
message on the next line.  Swap the order.

Fixes: fd3040b9394c ("net: ethernet: Add driver for Sunplus SP7021")
Signed-off-by: Zheng Wang <>
 drivers/net/ethernet/sunplus/spl2sw_driver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/sunplus/spl2sw_driver.c b/drivers/net/ethernet/sunplus/spl2sw_driver.c
index 546206640492..61d1d07dc070 100644
--- a/drivers/net/ethernet/sunplus/spl2sw_driver.c
+++ b/drivers/net/ethernet/sunplus/spl2sw_driver.c
@@ -248,8 +248,8 @@ static int spl2sw_nvmem_get_mac_address(struct device *dev, struct device_node *
 	/* Check if mac address is valid */
 	if (!is_valid_ether_addr(mac)) {
-		kfree(mac);
 		dev_info(dev, "Invalid mac address in nvmem (%pM)!\n", mac);
+		kfree(mac);
 		return -EINVAL;

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