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 4794A18DB2A; Wed, 25 Feb 2026 01:34:30 +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=1771983270; cv=none; b=MAB7LSoQgQI4Z+oKRzyW7eoXfj2OdpxDjYVOBe2OiEMRYni6t/cnVuelP3WurptfkZidpQK+ITmADZnyOViz5wTZ1lgC6NYp3jYPYCEX8yd9T+eGVCNRnahiMxBEwBQ/3l1tppailExnJDAotRtkrXhlnBFO6xKuNranAJMJ/2c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771983270; c=relaxed/simple; bh=sgW2jOuXzXw2W8pW4L+ds1sVGWWj/dCpFAr7fabmSt8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jdcJpFxylE+aRXXilrgO9y8rZ9mUmVCReGkVY6OVFPULRDv6AISqmDecRAJ5rB3Ju6NAK83778tdWAJxJaL5I0W7TPHENQ898LNg0E0hf8FJbtJRR875g3KZNh6oBzd4QG3nukU1pQSTCL/9lRzxqY6AXuatIihGQ7qurztBbkE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=tO0WpRw4; 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="tO0WpRw4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 081CFC116D0; Wed, 25 Feb 2026 01:34:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1771983270; bh=sgW2jOuXzXw2W8pW4L+ds1sVGWWj/dCpFAr7fabmSt8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tO0WpRw4GfZcssnJaB4wbI+laifRKxysw0hUNOlySEgZsYaJ1afEByya5a06525Os w9IhwPpDgZT6UiCij0U15Lic9+E/WAzmg11eh7J/5MMm/SnbG9Wyl03cyOCpXkKPM6 0/ZOQQhtA49k0z9ow4FaWimMvyimUmxSfbETKEQs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Florian Westphal , Sasha Levin Subject: [PATCH 6.19 410/781] netfilter: nft_set_hash: fix get operation on big endian Date: Tue, 24 Feb 2026 17:18:39 -0800 Message-ID: <20260225012409.760147623@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260225012359.695468795@linuxfoundation.org> References: <20260225012359.695468795@linuxfoundation.org> User-Agent: quilt/0.69 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 6.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Florian Westphal [ Upstream commit 2f635adbe2642d398a0be3ab245accd2987be0c3 ] tests/shell/testcases/packetpath/set_match_nomatch_hash_fast fails on big endian with: Error: Could not process rule: No such file or directory reset element ip test s { 244.147.90.126 } ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Fatal: Cannot fetch element "244.147.90.126" ... because the wrong bucket is searched, jhash() and jhash1_word are not interchangeable on big endian. Fixes: 3b02b0adc242 ("netfilter: nft_set_hash: fix lookups with fixed size hash on big endian") Signed-off-by: Florian Westphal Signed-off-by: Sasha Levin --- net/netfilter/nft_set_hash.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/net/netfilter/nft_set_hash.c b/net/netfilter/nft_set_hash.c index ba01ce75d6dea..739b992bde591 100644 --- a/net/netfilter/nft_set_hash.c +++ b/net/netfilter/nft_set_hash.c @@ -619,15 +619,20 @@ static struct nft_elem_priv * nft_hash_get(const struct net *net, const struct nft_set *set, const struct nft_set_elem *elem, unsigned int flags) { + const u32 *key = (const u32 *)&elem->key.val; struct nft_hash *priv = nft_set_priv(set); u8 genmask = nft_genmask_cur(net); struct nft_hash_elem *he; u32 hash; - hash = jhash(elem->key.val.data, set->klen, priv->seed); + if (set->klen == 4) + hash = jhash_1word(*key, priv->seed); + else + hash = jhash(key, set->klen, priv->seed); + hash = reciprocal_scale(hash, priv->buckets); hlist_for_each_entry_rcu(he, &priv->table[hash], node) { - if (!memcmp(nft_set_ext_key(&he->ext), elem->key.val.data, set->klen) && + if (!memcmp(nft_set_ext_key(&he->ext), key, set->klen) && nft_set_elem_active(&he->ext, genmask)) return &he->priv; } -- 2.51.0