diff options
| author | Colin Ian King <colin.king@canonical.com> | 2019-06-17 17:12:49 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-14 08:11:14 +0200 |
| commit | 37232abb6ea3a7a132692eab07bea5a19a729756 (patch) | |
| tree | e87d85e9a159fd23006e515ceb881179b7122aae | |
| parent | 740b2ac495187f33e7ad7c216382ef171150d358 (diff) | |
net: lio_core: fix potential sign-extension overflow on large shift
[ Upstream commit 9476274093a0e79b905f4cd6cf6d149f65e02c17 ]
Left shifting the signed int value 1 by 31 bits has undefined behaviour
and the shift amount oq_no can be as much as 63. Fix this by using
BIT_ULL(oq_no) instead.
Addresses-Coverity: ("Bad shift operation")
Fixes: f21fb3ed364b ("Add support of Cavium Liquidio ethernet adapters")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/cavium/liquidio/lio_core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_core.c b/drivers/net/ethernet/cavium/liquidio/lio_core.c index 8093c5eafea2..781814835a4f 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_core.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_core.c @@ -985,7 +985,7 @@ static void liquidio_schedule_droq_pkt_handlers(struct octeon_device *oct) if (droq->ops.poll_mode) { droq->ops.napi_fn(droq); - oct_priv->napi_mask |= (1 << oq_no); + oct_priv->napi_mask |= BIT_ULL(oq_no); } else { tasklet_schedule(&oct_priv->droq_tasklet); } |