From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DD3A317AA6 for ; Wed, 9 Aug 2023 11:28:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5CF9BC433C7; Wed, 9 Aug 2023 11:28:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691580499; bh=xBH/tG141jmPTLoCMD5zyciakySYrBEF2Fzz85AglRk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wgx8nXX7sqceSktEfCH7OW3VC/UWtRoUFmM/Ro4V2HL4nqOdH4Hg60SJKTg7ntl4s 83hBaiR2ZoKaehkXuLxL+/lHee1A+6c9ecYKeW/JO0rFxur76ZSkCM/YczyAC9UNiG JZaNqY0iQiR0NT2OavdwosS1GD5InEgkOwWwuvxw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dan Carpenter , Leon Romanovsky , Sasha Levin Subject: [PATCH 5.4 045/154] RDMA/mlx4: Make check for invalid flags stricter Date: Wed, 9 Aug 2023 12:41:16 +0200 Message-ID: <20230809103638.507385609@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809103636.887175326@linuxfoundation.org> References: <20230809103636.887175326@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Dan Carpenter [ Upstream commit d64b1ee12a168030fbb3e0aebf7bce49e9a07589 ] This code is trying to ensure that only the flags specified in the list are allowed. The problem is that ucmd->rx_hash_fields_mask is a u64 and the flags are an enum which is treated as a u32 in this context. That means the test doesn't check whether the highest 32 bits are zero. Fixes: 4d02ebd9bbbd ("IB/mlx4: Fix RSS hash fields restrictions") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/233ed975-982d-422a-b498-410f71d8a101@moroto.mountain Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/hw/mlx4/qp.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c index 02caf9a439cf1..395d8a99b12e4 100644 --- a/drivers/infiniband/hw/mlx4/qp.c +++ b/drivers/infiniband/hw/mlx4/qp.c @@ -556,15 +556,15 @@ static int set_qp_rss(struct mlx4_ib_dev *dev, struct mlx4_ib_rss *rss_ctx, return (-EOPNOTSUPP); } - if (ucmd->rx_hash_fields_mask & ~(MLX4_IB_RX_HASH_SRC_IPV4 | - MLX4_IB_RX_HASH_DST_IPV4 | - MLX4_IB_RX_HASH_SRC_IPV6 | - MLX4_IB_RX_HASH_DST_IPV6 | - MLX4_IB_RX_HASH_SRC_PORT_TCP | - MLX4_IB_RX_HASH_DST_PORT_TCP | - MLX4_IB_RX_HASH_SRC_PORT_UDP | - MLX4_IB_RX_HASH_DST_PORT_UDP | - MLX4_IB_RX_HASH_INNER)) { + if (ucmd->rx_hash_fields_mask & ~(u64)(MLX4_IB_RX_HASH_SRC_IPV4 | + MLX4_IB_RX_HASH_DST_IPV4 | + MLX4_IB_RX_HASH_SRC_IPV6 | + MLX4_IB_RX_HASH_DST_IPV6 | + MLX4_IB_RX_HASH_SRC_PORT_TCP | + MLX4_IB_RX_HASH_DST_PORT_TCP | + MLX4_IB_RX_HASH_SRC_PORT_UDP | + MLX4_IB_RX_HASH_DST_PORT_UDP | + MLX4_IB_RX_HASH_INNER)) { pr_debug("RX Hash fields_mask has unsupported mask (0x%llx)\n", ucmd->rx_hash_fields_mask); return (-EOPNOTSUPP); -- 2.40.1