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 4B53610954 for ; Mon, 19 Jun 2023 10:30:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C5F05C433C0; Mon, 19 Jun 2023 10:30:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1687170658; bh=9fZRLWhnGQgFi9XA2dG7hAL9nO90gc2HWWvz1bl8Lb0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=p+wtnf6vb6RDRKJLE5zCI+sv5nABeLu1QzIjOihNjeJXgy9dY1/baLXhyH6MtlstA d25jeyoDNiiJaYnQmrTYp+kw3gPeFqGTLZCImd+zYMxrffvo1ip+CDZD15QMzCesE6 M8HPocqoZeSjkzdScPOWST0qVTWsRMT4txW2zK1c= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pablo Neira Ayuso , Sasha Levin Subject: [PATCH 4.14 18/32] netfilter: nfnetlink: skip error delivery on batch in case of ENOMEM Date: Mon, 19 Jun 2023 12:29:06 +0200 Message-ID: <20230619102128.507478587@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230619102127.461443957@linuxfoundation.org> References: <20230619102127.461443957@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Pablo Neira Ayuso [ Upstream commit a1a64a151dae8ac3581c1cbde44b672045cb658b ] If caller reports ENOMEM, then stop iterating over the batch and send a single netlink message to userspace to report OOM. Fixes: cbb8125eb40b ("netfilter: nfnetlink: deliver netlink errors on batch completion") Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin --- net/netfilter/nfnetlink.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index 2cee032af46d2..96ae1c4ad9a91 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -411,7 +411,8 @@ static void nfnetlink_rcv_batch(struct sk_buff *skb, struct nlmsghdr *nlh, * processed, this avoids that the same error is * reported several times when replaying the batch. */ - if (nfnl_err_add(&err_list, nlh, err, &extack) < 0) { + if (err == -ENOMEM || + nfnl_err_add(&err_list, nlh, err, &extack) < 0) { /* We failed to enqueue an error, reset the * list of errors and send OOM to userspace * pointing to the batch header. -- 2.39.2