Messages in this thread Patch in this message | | | From | Kangjie Lu <> | Subject | [PATCH] net: stmmac: fix a potential NULL pointer dereference | Date | Tue, 12 Mar 2019 02:32:41 -0500 |
| |
In case of_device_get_match_data fails, the fix return -ENOMEM to avoid the NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu> --- drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c index 3256e5cbad27..344ead5949b1 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c @@ -485,6 +485,8 @@ static int dwc_eth_dwmac_remove(struct platform_device *pdev) int err; data = of_device_get_match_data(&pdev->dev); + if (!data) + return -EINVAL; err = stmmac_dvr_remove(&pdev->dev); if (err < 0) -- 2.17.1
| |