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net: liquidio: fix a NULL pointer dereference 

In case octeon_alloc_soft_command fails, the fix reports the
error and returns to avoid NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Kangjie Lu 2019-03-11 00:02:32 -05:00 committed by David S. Miller
parent a623a7a1a5
commit fe543b2f17
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/cavium/liquidio/lio_main.c
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@ -1192,6 +1192,11 @@ 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;