net: lio_core: fix potential sign-extension overflow on large shift
authorColin Ian King <colin.king@canonical.com>
Mon, 17 Jun 2019 16:12:49 +0000 (17:12 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 14 Jul 2019 06:11:14 +0000 (08:11 +0200)
commit37232abb6ea3a7a132692eab07bea5a19a729756
treee87d85e9a159fd23006e515ceb881179b7122aae
parent740b2ac495187f33e7ad7c216382ef171150d358
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>
drivers/net/ethernet/cavium/liquidio/lio_core.c