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 D37C21ED51; Thu, 3 Aug 2023 13:10:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 383D2C433C8; Thu, 3 Aug 2023 13:10:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1691068221; bh=zJq+7MHzjebZFTJ3+CcDRXVZzxlvDho72oqWr9mesO0=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=SVUCI//OsHkUay0eCPcq7hyihL/dnpSISjlvafir7TNzgKr6krpnN7O1CEzyX1cOs 0qYKyC5EoL6LmYRC238BW9ddC2U6v53zUgb7LNimftPrKFNB6j36/smZKrrK9LVSLx MhGwBwAy/uS5ZCVkb2cYYj5xgOJxbpZLYVZpp32TbOlMTQh79TO+6wQXwADhEgS5rP MQFagNyOnOrCzAk43HZ1R6Xwzs1gnBAzp0pAEAVvX/7xLdQDby6iXttC6qnXMhBUdp xYSzobqnoSRFrxfB7zfHlB6BEjal51h5jgFmD9XPg7x8iv0qb/SRedoHy8tZaGI/vK pJ1b6NUqzoIRQ== Received: from aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (localhost.localdomain [127.0.0.1]) by aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (Postfix) with ESMTP id 1951CC41620; Thu, 3 Aug 2023 13:10:21 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net-next] udp6: Fix __ip6_append_data()'s handling of MSG_SPLICE_PAGES From: patchwork-bot+netdevbpf@kernel.org Message-Id: <169106822109.11210.4147932489626206535.git-patchwork-notify@kernel.org> Date: Thu, 03 Aug 2023 13:10:21 +0000 References: <1580952.1690961810@warthog.procyon.org.uk> In-Reply-To: <1580952.1690961810@warthog.procyon.org.uk> To: David Howells Cc: netdev@vger.kernel.org, willemdebruijn.kernel@gmail.com, syzbot+f527b971b4bdc8e79f9e@syzkaller.appspotmail.com, bpf@vger.kernel.org, brauner@kernel.org, davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, axboe@kernel.dk, viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org, syzkaller-bugs@googlegroups.com, linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net-next.git (main) by Paolo Abeni : On Wed, 02 Aug 2023 08:36:50 +0100 you wrote: > __ip6_append_data() can has a similar problem to __ip_append_data()[1] when > asked to splice into a partially-built UDP message that has more than the > frag-limit data and up to the MTU limit, but in the ipv6 case, it errors > out with EINVAL. This can be triggered with something like: > > pipe(pfd); > sfd = socket(AF_INET6, SOCK_DGRAM, 0); > connect(sfd, ...); > send(sfd, buffer, 8137, MSG_CONFIRM|MSG_MORE); > write(pfd[1], buffer, 8); > splice(pfd[0], 0, sfd, 0, 0x4ffe0ul, 0); > > [...] Here is the summary with links: - [net-next] udp6: Fix __ip6_append_data()'s handling of MSG_SPLICE_PAGES https://git.kernel.org/netdev/net-next/c/ce650a166335 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html