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 BC1D21FB38; Wed, 19 Jul 2023 17:20:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3ADB5C433C8; Wed, 19 Jul 2023 17:20:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1689787236; bh=ReZr05hGtYFAqQyuT2Yq3u5ZwenymCSJPjnkOpUwobQ=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=lVWYh4TdGKcoScOHDzBbnK82DhTbhVrt2wy1GNt8edOtH2sKspWSCcrNQfIofEJfr K22HZYWM6/8PZsPGRPqyrWUEoL7btdwWeTOjn9ge5P6i8RpCtgif1/OdZckFGAGHWr Wvaq+OXwVmPgDgmtg/jV3v4djWVHprzT3AFP6YZmAp1pwVKOdjX5orjSrXStZHm6A2 1n0R7zCF/iBsyometbjj2c4ZcCwfJZUfEIfB4lzIQ4I0JrJUygUzbA4s3VaQhjItil 8CDdhK8u7bsxJFk0EHaIagVv9Sqb6G01/fqikhPM2OLHVLbFECRYy6uZYzlMkA3Q5R Txto+pxF4it2A== Date: Wed, 19 Jul 2023 10:20:35 -0700 From: Jakub Kicinski To: Alexei Starovoitov Cc: davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, daniel@iogearbox.net, andrii@kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, kernel-team@fb.com Subject: Re: [PATCH bpf-next] bpf, net: Introduce skb_pointer_if_linear(). Message-ID: <20230719102035.4710b202@kernel.org> In-Reply-To: <20230718234021.43640-1-alexei.starovoitov@gmail.com> References: <20230718234021.43640-1-alexei.starovoitov@gmail.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 18 Jul 2023 16:40:21 -0700 Alexei Starovoitov wrote: > From: Alexei Starovoitov > > Network drivers always call skb_header_pointer() with non-null buffer. > Remove !buffer check to prevent accidental misuse of skb_header_pointer(). > Introduce skb_pointer_if_linear() instead. > > Reported-by: Jakub Kicinski > Signed-off-by: Alexei Starovoitov Acked-by: Jakub Kicinski Thanks!