6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiawen Wu <jiawenwu@xxxxxxxxxxxxxx>
[ Upstream commit 8ba2c459668cfe2aaacc5ebcd35b4b9ef8643013 ]
When the device uses a custom subsystem vendor ID, the function
wx_sw_init() returns before the memory of 'wx->mac_table' is allocated.
The null pointer will causes the kernel panic.
Fixes: 79625f45ca73 ("net: wangxun: Move MAC address handling to libwx")
Signed-off-by: Jiawen Wu <jiawenwu@xxxxxxxxxxxxxx>
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/wangxun/libwx/wx_hw.c | 8 +++++---
drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | 4 +---
drivers/net/ethernet/wangxun/txgbe/txgbe_main.c | 4 +---
3 files changed, 7 insertions(+), 9 deletions(-)
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
index 85dc16faca544..52130df26aee5 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_hw.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
@@ -1677,10 +1677,12 @@ int wx_sw_init(struct wx *wx)
wx->subsystem_device_id = pdev->subsystem_device;
} else {
err = wx_flash_read_dword(wx, 0xfffdc, &ssid);
- if (!err)
- wx->subsystem_device_id = swab16((u16)ssid);
+ if (err < 0) {
+ wx_err(wx, "read of internal subsystem device id failed\n");
+ return err;
+ }
- return err;
+ wx->subsystem_device_id = swab16((u16)ssid);
}
wx->mac_table = kcalloc(wx->mac.num_rar_entries,
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
index 2b431db6085a6..a4d63d2f3c5bb 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
@@ -121,10 +121,8 @@ static int ngbe_sw_init(struct wx *wx)
/* PCI config space info */
err = wx_sw_init(wx);
- if (err < 0) {
- wx_err(wx, "read of internal subsystem device id failed\n");
+ if (err < 0)
return err;
- }
/* mac type, phy type , oem type */
ngbe_init_type_code(wx);
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
index 5c3aed516ac20..d60c26ba0ba4c 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -362,10 +362,8 @@ static int txgbe_sw_init(struct wx *wx)
/* PCI config space info */
err = wx_sw_init(wx);
- if (err < 0) {
- wx_err(wx, "read of internal subsystem device id failed\n");
+ if (err < 0)
return err;
- }
txgbe_init_type_code(wx);
--
2.42.0
