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 BCF2817CA12; Mon, 10 Mar 2025 17:50:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741629040; cv=none; b=fGOI0KT7FwZC9R09cETv+BKa9WkC631XgL9qXBQsdGeVzgwQj3yn4gvq9X0pmPOMRppIFH/gahpocylMEoUY9Kk9oeRQigNN7q6onTnv8QnGlenE0B5lBCnGRwMcXQdy41S/drKBtsIWG0GaWJaeNvsB12m0MzuUlKrOEPDviao= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741629040; c=relaxed/simple; bh=H8OQ0Q2FqCfN3CA5xJrHvz+wc7Ps4dx2NCWKfK4kEZ4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PL0002GEU1vYgf3f5LN++84tvdPeo7AYnVEzcf8RHc2T11NQk57zMGDUaZCDosuMWIPFC9s8EI4lglxgzXfvRq/aX0f3xmI6rEFsgRhzqVPvUc6WoMKRG/u0n1sH0KJu8AGU6ikNbJV/YpPfYaqpdsbzH/waDIKzPBLXHq6+aho= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=0yCqC0qN; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="0yCqC0qN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 46BD0C4CEE5; Mon, 10 Mar 2025 17:50:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1741629040; bh=H8OQ0Q2FqCfN3CA5xJrHvz+wc7Ps4dx2NCWKfK4kEZ4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0yCqC0qNnpc4ngWwA/xJbnxzyqS2EUth9t8ik7YvDedvsPwiGrrmF/fAsq4sg8j9k MG+abfaG46zPtXYrmbQZClrU6KPDoKZ9IGT+/Gu2Ypk/LgXtKOaiy0B/o3prDw0uxV YYRRlJzdwv3Ex+YSOh/N+pe5K5pRK5cEkar3p8Zw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jianbo Liu , Patrisious Haddad , Leon Romanovsky , Steffen Klassert , Sasha Levin Subject: [PATCH 5.15 157/620] xfrm: replay: Fix the update of replay_esn->oseq_hi for GSO Date: Mon, 10 Mar 2025 18:00:03 +0100 Message-ID: <20250310170551.807471100@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250310170545.553361750@linuxfoundation.org> References: <20250310170545.553361750@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jianbo Liu [ Upstream commit c05c5e5aa163f4682ca97a2f0536575fc7dbdecb ] When skb needs GSO and wrap around happens, if xo->seq.low (seqno of the first skb segment) is before the last seq number but oseq (seqno of the last segment) is after it, xo->seq.low is still bigger than replay_esn->oseq while oseq is smaller than it, so the update of replay_esn->oseq_hi is missed for this case wrap around because of the change in the cited commit. For example, if sending a packet with gso_segs=3 while old replay_esn->oseq=0xfffffffe, we calculate: xo->seq.low = 0xfffffffe + 1 = 0x0xffffffff oseq = 0xfffffffe + 3 = 0x1 (oseq < replay_esn->oseq) is true, but (xo->seq.low < replay_esn->oseq) is false, so replay_esn->oseq_hi is not incremented. To fix this issue, change the outer checking back for the update of replay_esn->oseq_hi. And add new checking inside for the update of packet's oseq_hi. Fixes: 4b549ccce941 ("xfrm: replay: Fix ESN wrap around for GSO") Signed-off-by: Jianbo Liu Reviewed-by: Patrisious Haddad Signed-off-by: Leon Romanovsky Signed-off-by: Steffen Klassert Signed-off-by: Sasha Levin --- net/xfrm/xfrm_replay.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/net/xfrm/xfrm_replay.c b/net/xfrm/xfrm_replay.c index 49dd788859d8b..6f6a18dc375b7 100644 --- a/net/xfrm/xfrm_replay.c +++ b/net/xfrm/xfrm_replay.c @@ -714,10 +714,12 @@ static int xfrm_replay_overflow_offload_esn(struct xfrm_state *x, struct sk_buff oseq += skb_shinfo(skb)->gso_segs; } - if (unlikely(xo->seq.low < replay_esn->oseq)) { - XFRM_SKB_CB(skb)->seq.output.hi = ++oseq_hi; - xo->seq.hi = oseq_hi; - replay_esn->oseq_hi = oseq_hi; + if (unlikely(oseq < replay_esn->oseq)) { + replay_esn->oseq_hi = ++oseq_hi; + if (xo->seq.low < replay_esn->oseq) { + XFRM_SKB_CB(skb)->seq.output.hi = oseq_hi; + xo->seq.hi = oseq_hi; + } if (replay_esn->oseq_hi == 0) { replay_esn->oseq--; replay_esn->oseq_hi--; -- 2.39.5