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 0638680BF8; Wed, 7 Aug 2024 15:09:49 +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=1723043389; cv=none; b=TPbkQd0DHqwvVikAgAl055ey8Me7ENwAEE5U3z7jKBuf1azNKFJu660kyffRkUyZBkzqsku9Fe7X5zPinuSFTW4M3I8mESDjxZpVkcjg78JWsOhdA63UxGoUDCcW004bB55PT5vwvXiZ29X1j4+/glFRz3ExcWKofDEy4sgz8V0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723043389; c=relaxed/simple; bh=gdlVhb0ALYasFhZH4yovP6exVKlFQOVPaSjWPpFckrg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SvLolEIVAbr1ljFDZaAazLC68qIbDppQMuoeUoMUxffWE6yATX973Or5SqvnU1tgGNQ0i1EmmfFw6I+RCoqoqCwZlKFEPJeQTBHC31H2pQgBBz9PUDyZ1fJpdrkJMyrkduhah/ejMlP7zYnJXwSNyeIMkWeU/d1t+58xEwzncGw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Iwb9zJwj; 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="Iwb9zJwj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8D1ADC32781; Wed, 7 Aug 2024 15:09:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1723043388; bh=gdlVhb0ALYasFhZH4yovP6exVKlFQOVPaSjWPpFckrg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Iwb9zJwj4OArS0AY1ORq0VwmSf6f5V/alJ9zPLlW+b8xlxaGYNzlmd7Ny+xdqoM5x wyoS7oGYiEva7+U3ouKYlbwY/N3eFJCqoEXgRj2EOVccqNgBYkfjLP5nLRutix/Vha Pd62Zj9esQxjtIptKuJkI9AabBQ35nrAjF6yejXs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Shannon Nelson , Maciej Fijalkowski , Tony Nguyen , Sasha Levin , Chandan Kumar Rout Subject: [PATCH 6.6 072/121] ice: add missing WRITE_ONCE when clearing ice_rx_ring::xdp_prog Date: Wed, 7 Aug 2024 17:00:04 +0200 Message-ID: <20240807150021.760446324@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240807150019.412911622@linuxfoundation.org> References: <20240807150019.412911622@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 6044ca26210ba72b3dcc649fae1cbedd9e6ab018 ] It is read by data path and modified from process context on remote cpu so it is needed to use WRITE_ONCE to clear the pointer. Fixes: efc2214b6047 ("ice: Add support for XDP") Reviewed-by: Shannon Nelson Tested-by: Chandan Kumar Rout (A Contingent Worker at Intel) Signed-off-by: Maciej Fijalkowski Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/ice/ice_txrx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c index 24c914015973e..49b1fa9651161 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx.c +++ b/drivers/net/ethernet/intel/ice/ice_txrx.c @@ -456,7 +456,7 @@ void ice_free_rx_ring(struct ice_rx_ring *rx_ring) if (rx_ring->vsi->type == ICE_VSI_PF) if (xdp_rxq_info_is_reg(&rx_ring->xdp_rxq)) xdp_rxq_info_unreg(&rx_ring->xdp_rxq); - rx_ring->xdp_prog = NULL; + WRITE_ONCE(rx_ring->xdp_prog, NULL); if (rx_ring->xsk_pool) { kfree(rx_ring->xdp_buf); rx_ring->xdp_buf = NULL; -- 2.43.0