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 6A7677405B; Mon, 29 Jan 2024 17:16:04 +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=1706548564; cv=none; b=K6+mLjqtLMEN7YMoo9P2mkEvpUxeIqHOquhuBIiGgZUX0didcE6oAsyx4XhU9HbRmPorkljhCHGBXkE3U0Y6fLzDNHT5ercu06CffF/hooOEiss4DZ0o0onQwbF5aRDC8P6OW9g+fSSaguKFZcmIqwT1+OP9QCd8yt65fKU0nsI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706548564; c=relaxed/simple; bh=0ECCP6ELM9hYyrNda17JcM8D8a6uzHlahUiWnr9sAGg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PDM0pOjbwwdsoXFthOlKmpsHRSlLDWbOLY5f3FlApszIAXiKpV9RLdHwZMfTzqCiJcQOYL56JJ8cinMUqa1Ibz4X4XIbA72GpAtDYNO5ho6OAHBMWzy0h2KjrHU6xTvnoBVdXqmk9WuvW9qhfXlMFL/kEwoVyZco8P5qlMVoFzw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=e6MVQ9HT; 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="e6MVQ9HT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 346E6C43390; Mon, 29 Jan 2024 17:16:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1706548564; bh=0ECCP6ELM9hYyrNda17JcM8D8a6uzHlahUiWnr9sAGg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=e6MVQ9HTweLUEwlT5wQcRgxQ2bn0xg8GQd5X9QglKzAI1wenVw1PoSx8F0FuBGqsq FMMTxZxpAeY87P3FFa+r0WwnuMrRMzpjcuJjQ3wxodefSCfcJ5mMsrAYyqzTxiY5KW 5tms+fFRF6oEK5hTJbS8F3y+F+6FcRk8MFz5R1D8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Magnus Karlsson , Maciej Fijalkowski , Alexei Starovoitov , Sasha Levin Subject: [PATCH 6.6 212/331] xsk: recycle buffer in case Rx queue was full Date: Mon, 29 Jan 2024 09:04:36 -0800 Message-ID: <20240129170021.085326196@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240129170014.969142961@linuxfoundation.org> References: <20240129170014.969142961@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Maciej Fijalkowski [ Upstream commit 269009893146c495f41e9572dd9319e787c2eba9 ] Add missing xsk_buff_free() call when __xsk_rcv_zc() failed to produce descriptor to XSK Rx queue. Fixes: 24ea50127ecf ("xsk: support mbuf on ZC RX") Acked-by: Magnus Karlsson Signed-off-by: Maciej Fijalkowski Link: https://lore.kernel.org/r/20240124191602.566724-2-maciej.fijalkowski@intel.com Signed-off-by: Alexei Starovoitov Signed-off-by: Sasha Levin --- net/xdp/xsk.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c index 774a6d1916e4..d849dc04a334 100644 --- a/net/xdp/xsk.c +++ b/net/xdp/xsk.c @@ -166,8 +166,10 @@ static int xsk_rcv_zc(struct xdp_sock *xs, struct xdp_buff *xdp, u32 len) contd = XDP_PKT_CONTD; err = __xsk_rcv_zc(xs, xskb, len, contd); - if (err || likely(!frags)) - goto out; + if (err) + goto err; + if (likely(!frags)) + return 0; xskb_list = &xskb->pool->xskb_list; list_for_each_entry_safe(pos, tmp, xskb_list, xskb_list_node) { @@ -176,11 +178,13 @@ static int xsk_rcv_zc(struct xdp_sock *xs, struct xdp_buff *xdp, u32 len) len = pos->xdp.data_end - pos->xdp.data; err = __xsk_rcv_zc(xs, pos, len, contd); if (err) - return err; + goto err; list_del(&pos->xskb_list_node); } -out: + return 0; +err: + xsk_buff_free(xdp); return err; } -- 2.43.0