From patchwork Tue May 31 18:59:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Dumazet X-Patchwork-Id: 12866034 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9E497C433F5 for ; Tue, 31 May 2022 18:59:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345154AbiEaS7j (ORCPT ); Tue, 31 May 2022 14:59:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59028 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236089AbiEaS7i (ORCPT ); Tue, 31 May 2022 14:59:38 -0400 Received: from mail-pf1-x433.google.com (mail-pf1-x433.google.com [IPv6:2607:f8b0:4864:20::433]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0700053707 for ; Tue, 31 May 2022 11:59:38 -0700 (PDT) Received: by mail-pf1-x433.google.com with SMTP id u2so3097753pfc.2 for ; Tue, 31 May 2022 11:59:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4CU4nIJkZVG/LCxodA+Q7qdEuTs7Vum8dgu+aHgrN4g=; b=YR8KPMh2dWD8+dKAyubLJ4shR0f13xVpo0juw5o2VU7MkQfR+tEzoYQXbtiECnvHCA A0ZK0+JZVW5A8HA6Y3ZU1SIDUaNNEIGNuPgFy2pa091PpFlbX4HEv2fPHWbR/IcLrKFz QptConKwcwNLRO5DMhPtzG+qaS1GtrVEc6pps/mf9Uz5DwWUnbfNj5B7gSR20THr4P5T jRi1VJvmxAIBW3HtnyWnQUrrM8OZS8ixgBE5qX/Ki13JLpSVYvQPP+8YAgPN5xiEj4Jl dpMY3NMr372RUPCdrnx/aHxD4NY9j21Laj/6Fg5FYWRlVb5zvHzc4ITl4O6Ex6eKokm5 OuXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4CU4nIJkZVG/LCxodA+Q7qdEuTs7Vum8dgu+aHgrN4g=; b=5Eey21x6GKp+5PONNYu1ysxlJU5S+uqxdI9qvO2KADG5/OAH0t8QOJRVGdSMW5X6YB 0WGrDpqTU46KYdXnmfnzvgmEz6r3TlfoZP1wKMKTPPlUkFlhOw7jwYJbhjeK6HRV5TSq /cZ68V2Kjqvx0TzvesuuWIRlfEAePR4Q+ataW9VoMYMkAFeJHfQdMdbAZACUS8NTN/AP eVY6j3G2f5DHsNQ2vB85Wu6PCfkFkN400CX5WyN0IlyPjIZIJo7necpTREw9z9lVfRso wQn71tOwl4403F/j1WEAyTXsvDztAkbdpWxQWdCHKt46MxcRmndXUicxkinoe+f9wKq6 Oy9g== X-Gm-Message-State: AOAM5326agwI+vPACJNFFBz+QY55Y2vNJ4pHUQ+TSFzvgeb2DECTHMpO O4K8hmjjCu0nOiw1m4UYIOI= X-Google-Smtp-Source: ABdhPJzIi6fpPIQyTRTIXE7O7QPEs9Yzp6PPaQXPUtr9kvouXpvfLxz5+P272sUF0lIDvfkiYGgrjw== X-Received: by 2002:a05:6a00:2488:b0:518:afb4:bb60 with SMTP id c8-20020a056a00248800b00518afb4bb60mr41621022pfv.51.1654023577504; Tue, 31 May 2022 11:59:37 -0700 (PDT) Received: from edumazet1.svl.corp.google.com ([2620:15c:2c4:201:74f8:d874:7d9d:dabb]) by smtp.gmail.com with ESMTPSA id y30-20020a056a001c9e00b0050dc762814dsm10941628pfw.39.2022.05.31.11.59.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 May 2022 11:59:36 -0700 (PDT) From: Eric Dumazet To: "David S . Miller" , Jakub Kicinski , Paolo Abeni Cc: netdev , Willem de Bruijn , Eric Dumazet , Eric Dumazet Subject: [PATCH net 0/2] net: af_packet: be careful when expanding mac header size Date: Tue, 31 May 2022 11:59:31 -0700 Message-Id: <20220531185933.1086667-1-eric.dumazet@gmail.com> X-Mailer: git-send-email 2.36.1.255.ge46751e96f-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Eric Dumazet A recent regression in af_packet needed a preliminary debug patch, which will presumably be useful for next bugs hunting. The af_packet fix is to make sure MAC headers are contained in skb linear part, as GSO stack requests. Eric Dumazet (2): net: add debug info to __skb_pull() net/af_packet: make sure to pull mac header include/linux/skbuff.h | 9 ++++++++- net/packet/af_packet.c | 6 ++++-- 2 files changed, 12 insertions(+), 3 deletions(-)