net/cxgbe: fix possible null pointer dereference

Check return value of malloc.

Fixes: 3bd122eef2cc ("cxgbe/base: add hardware API for Chelsio T5 series adapters")
Cc: stable@dpdk.org
Signed-off-by: Henry Cai <caihe@huawei.com>
Acked-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>

diff --git a/drivers/net/cxgbe/base/t4_hw.c b/drivers/net/cxgbe/base/t4_hw.c
index c089b06..9dca8da 100644 (file)
--- a/drivers/net/cxgbe/base/t4_hw.c
+++ b/drivers/net/cxgbe/base/t4_hw.c
@@ -359,6 +359,9 @@ int t4_wr_mbox_meat_timeout(struct adapter *adap, int mbox,
        struct mbox_entry entry;
        u32 pcie_fw = 0;
 
+       if (!temp)
+               return -ENOMEM;
+
        if ((size & 15) || size > MBOX_LEN) {
                free(temp);
                return -EINVAL;