From patchwork Wed Aug 2 05:05:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 13337629 X-Patchwork-Delegate: kuba@kernel.org 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 3B46CEBF for ; Wed, 2 Aug 2023 05:04:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2F79BC433C7; Wed, 2 Aug 2023 05:04:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690952667; bh=roMvJpb+EzYKwtQeG0++SvhEzIg74QW7AkwQyMIYc/8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=jIR3DAN3rPp40JJ80ZHvkLqrCjGI4pSRFKCrEkL1vHVjBNGUvz3xOLHhxuwLauIXl 2w3Hi13EWZBk9l75KXdGL6arb1bAYS7vRLZvWif0lYIFruJuRKXWZW1imPdW/bQRQE HLH311XABoSVxhP3HRVme9J+NCojqdyrqGM5/2dsSPZfZnaWPpJolWQNNsN40YA50T XTSgR+6axNJjZpTIE5xji6Pg1woOTWvU6UFD3M3+enuWUkQuYpfc8bcbEbeTfiNRQv CtdfFKEfbdRGpccfrBCQ5avkgYsXGxT+36SJkAGGGt+V2rYcBvzr4fvAYxpjs4NhEf +M3pG5cOlt9EQ== Date: Tue, 1 Aug 2023 23:05:31 -0600 From: "Gustavo A. R. Silva" To: Jesse Brandeburg , Tony Nguyen , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" , linux-hardening@vger.kernel.org Subject: [PATCH 1/4][next] i40e: Replace one-element array with flex-array member in struct i40e_package_header Message-ID: <768db2c3764a490118f6850d24f6e49998494b6c.1690938732.git.gustavoars@kernel.org> References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Patchwork-Delegate: kuba@kernel.org One-element and zero-length arrays are deprecated. So, replace one-element array in struct i40e_package_header with flexible-array member. The `+ sizeof(u32)` adjustments ensure that there are no differences in binary output. Link: https://github.com/KSPP/linux/issues/335 Signed-off-by: Gustavo A. R. Silva Tested-by: Pucha Himasekhar Reddy (A Contingent worker at Intel) --- drivers/net/ethernet/intel/i40e/i40e_ddp.c | 4 ++-- drivers/net/ethernet/intel/i40e/i40e_type.h | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_ddp.c b/drivers/net/ethernet/intel/i40e/i40e_ddp.c index 7e8183762fd9..0db6f5e3cfcc 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ddp.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ddp.c @@ -220,7 +220,7 @@ static bool i40e_ddp_is_pkg_hdr_valid(struct net_device *netdev, netdev_err(netdev, "Invalid DDP profile - size is bigger than 4G"); return false; } - if (size < (sizeof(struct i40e_package_header) + + if (size < (sizeof(struct i40e_package_header) + sizeof(u32) + sizeof(struct i40e_metadata_segment) + sizeof(u32) * 2)) { netdev_err(netdev, "Invalid DDP profile - size is too small."); return false; @@ -281,7 +281,7 @@ int i40e_ddp_load(struct net_device *netdev, const u8 *data, size_t size, if (!i40e_ddp_is_pkg_hdr_valid(netdev, pkg_hdr, size)) return -EINVAL; - if (size < (sizeof(struct i40e_package_header) + + if (size < (sizeof(struct i40e_package_header) + sizeof(u32) + sizeof(struct i40e_metadata_segment) + sizeof(u32) * 2)) { netdev_err(netdev, "Invalid DDP recipe size."); return -EINVAL; diff --git a/drivers/net/ethernet/intel/i40e/i40e_type.h b/drivers/net/ethernet/intel/i40e/i40e_type.h index 388c3d36d96a..c3d5fe12059a 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_type.h +++ b/drivers/net/ethernet/intel/i40e/i40e_type.h @@ -1456,7 +1456,7 @@ struct i40e_ddp_version { struct i40e_package_header { struct i40e_ddp_version version; u32 segment_count; - u32 segment_offset[1]; + u32 segment_offset[]; }; /* Generic segment header */