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Subject[PATCH] net: liquidio: fix NULL pointer dereferences
Date
In case octeon_alloc_soft_command fails, the fix reports the
error and returns to avoid NULL pointer dereferences.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
---
drivers/net/ethernet/cavium/liquidio/lio_vf_main.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
index 54b245797d2e..cc081cda847c 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
@@ -611,6 +611,12 @@ static void send_rx_ctrl_cmd(struct lio *lio, int start_stop)
sc = (struct octeon_soft_command *)
octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE,
16, 0);
+ if (!sc) {
+ netif_info(lio, rx_err, lio->netdev,
+ "Failed to allocate octeon_soft_command\n");
+ return;
+ }
+

ncmd = (union octnet_cmd *)sc->virtdptr;

@@ -1960,6 +1966,12 @@ static int setup_nic_devices(struct octeon_device *octeon_dev)
sc = (struct octeon_soft_command *)
octeon_alloc_soft_command(octeon_dev, data_size,
resp_size, 0);
+ if (!sc) {
+ dev_err(&octeon_dev->pci_dev->dev,
+ "Failed to allocate octeon_soft_command\n");
+ return -ENOMEM;
+ }
+
resp = (struct liquidio_if_cfg_resp *)sc->virtrptr;
vdata = (struct lio_version *)sc->virtdptr;

--
2.17.1
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