From mboxrd@z Thu Jan 1 00:00:00 1970 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 66509C4321E for ; Wed, 9 Mar 2022 16:24:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231418AbiCIQZj (ORCPT ); Wed, 9 Mar 2022 11:25:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46878 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237958AbiCIQVL (ORCPT ); Wed, 9 Mar 2022 11:21:11 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1221014EF69; Wed, 9 Mar 2022 08:17:37 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5A4C261926; Wed, 9 Mar 2022 16:17:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5CA1DC340EC; Wed, 9 Mar 2022 16:17:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1646842656; bh=UqwiPp2qBmb+7tKFdE0+ShqjTMU9taITEwrPGtd63H8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hxucHaLffSUSn5RCqXd5Wgrdwvd9eVwYiezZgyJVp6kguh+rkkpxGYxhAkhryLU56 ue+nHKkpcPT4Gl1Iz86RH8Wzf5OKyGqA23/s5Mt+V4SWdD0oE+ny6m6DYMxf0l5Eur QX4tv+BYMia9WySfJnyY/TFVIOrRW4nLi1xFyC1M/vYNjZjRrZwLozYJt451vLAA+E BXyvjGGDPZkowRpHjg2/FhdnPbMgrgKnra2xT2gTrCnqV8l7xztTYlM4YD8IxyU3vI wAmhv1ZRS/N46emWvHM4qiIMUlxYNKOhOn7TxGQ2tcIqIamDh/4kk/QMcPpKtzAQQW 4q3BK8xtTQ5Pw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yan Yan , Steffen Klassert , Sasha Levin , davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.16 04/27] xfrm: Fix xfrm migrate issues when address family changes Date: Wed, 9 Mar 2022 11:16:41 -0500 Message-Id: <20220309161711.135679-4-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220309161711.135679-1-sashal@kernel.org> References: <20220309161711.135679-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Yan Yan [ Upstream commit e03c3bba351f99ad932e8f06baa9da1afc418e02 ] xfrm_migrate cannot handle address family change of an xfrm_state. The symptons are the xfrm_state will be migrated to a wrong address, and sending as well as receiving packets wil be broken. This commit fixes it by breaking the original xfrm_state_clone method into two steps so as to update the props.family before running xfrm_init_state. As the result, xfrm_state's inner mode, outer mode, type and IP header length in xfrm_state_migrate can be updated with the new address family. Tested with additions to Android's kernel unit test suite: https://android-review.googlesource.com/c/kernel/tests/+/1885354 Signed-off-by: Yan Yan Signed-off-by: Steffen Klassert Signed-off-by: Sasha Levin --- net/xfrm/xfrm_state.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 291236d7676f..f7bfa1916968 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -1578,9 +1578,6 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig, memcpy(&x->mark, &orig->mark, sizeof(x->mark)); memcpy(&x->props.smark, &orig->props.smark, sizeof(x->props.smark)); - if (xfrm_init_state(x) < 0) - goto error; - x->props.flags = orig->props.flags; x->props.extra_flags = orig->props.extra_flags; @@ -1667,6 +1664,11 @@ struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x, if (!xc) return NULL; + xc->props.family = m->new_family; + + if (xfrm_init_state(xc) < 0) + goto error; + memcpy(&xc->id.daddr, &m->new_daddr, sizeof(xc->id.daddr)); memcpy(&xc->props.saddr, &m->new_saddr, sizeof(xc->props.saddr)); -- 2.34.1