Commit 40386f7d authored by Colin Ian King's avatar Colin Ian King Committed by Greg Kroah-Hartman

net: lio_core: fix potential sign-extension overflow on large shift

[ Upstream commit 94762740 ]

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: f21fb3ed ("Add support of Cavium Liquidio ethernet adapters")
Signed-off-by: default avatarColin Ian King <colin.king@canonical.com>
Reviewed-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 9465dc24
......@@ -964,7 +964,7 @@ 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);
}
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment