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| author | Colin Ian King <colin.king@canonical.com> | 2019-06-17 19:12:49 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-21 10:04:28 +0300 |
| commit | 9bd41f5634118567ae19a6c87029579985e12dc6 (patch) | |
| tree | 737ed73f2523f6f059eab9f20408d50021346473 /drivers/net/ethernet/cavium | |
| parent | 95a00fa0d43d201bd06422e5208d3b803394adba (diff) | |
| download | linux-9bd41f5634118567ae19a6c87029579985e12dc6.tar.xz | |
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>
Diffstat (limited to 'drivers/net/ethernet/cavium')
| -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 23f6b60030c5..8c16298a252d 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_core.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_core.c @@ -854,7 +854,7 @@ 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); } |