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 3745C5381 for ; Mon, 19 Jun 2023 10:42:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6757AC433C8; Mon, 19 Jun 2023 10:42:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1687171358; bh=ZeTGurbKT4eMNLGFM/TZlnQn9kab+3MNwEvhoBCUZm4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=c00ZmOHLr42Zvh7gjpdEpawYLfbawSM8neeiEn4YSIrEO3o5VKI/9Lt+Bnjic9rgy 4CFQFa1apXjUpSj+JPN+gsUh/VD0QGM2aLLjc+WlAT29fMjwEVFxhcWQzsPVLDA+rA 56z5wUx3FRBfPbXAoF/pNBro3gmDGECZC3GCjt2k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pablo Neira Ayuso , Sasha Levin Subject: [PATCH 4.19 27/49] netfilter: nfnetlink: skip error delivery on batch in case of ENOMEM Date: Mon, 19 Jun 2023 12:30:05 +0200 Message-ID: <20230619102131.291832509@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230619102129.856988902@linuxfoundation.org> References: <20230619102129.856988902@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 39e369e18cb87..0267be2e9cfe8 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -452,7 +452,8 @@ 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