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 3FF9516405 for ; Mon, 23 Oct 2023 11:43:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="UlOkG9H2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B0462C433C8; Mon, 23 Oct 2023 11:43:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1698061415; bh=n4CVAGpgQw7pGgYKoLVP0sqoPeuJ+QE2K3vy51znpPA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UlOkG9H28FrRMTKWIBRqv43MdleGw5Tbk3BD+8yOcQ14DQ6W8mZUdia7KW8zC/FU8 oHqbg8XTWLXirH63UwoKo5W/x0bkRfh7oGfcEDThpKmcjInw6jq1OObWg674lKShN0 gUBLtFURTFi7eY6oWikzqzYhNO36rrYAyuH3BiX0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yoshihiro Shimoda , Sergey Shtylyov , Jakub Kicinski , Sasha Levin Subject: [PATCH 5.10 013/202] ravb: Fix up dma_free_coherent() call in ravb_remove() Date: Mon, 23 Oct 2023 12:55:20 +0200 Message-ID: <20231023104826.997213257@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231023104826.569169691@linuxfoundation.org> References: <20231023104826.569169691@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 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yoshihiro Shimoda [ Upstream commit e6864af61493113558c502b5cd0d754c19b93277 ] In ravb_remove(), dma_free_coherent() should be call after unregister_netdev(). Otherwise, this controller is possible to use the freed buffer. Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper") Signed-off-by: Yoshihiro Shimoda Reviewed-by: Sergey Shtylyov Link: https://lore.kernel.org/r/20231005011201.14368-2-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/renesas/ravb_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 410ccd28f6531..a59da6a119769 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2249,14 +2249,14 @@ static int ravb_remove(struct platform_device *pdev) if (priv->chip_id != RCAR_GEN2) ravb_ptp_stop(ndev); - dma_free_coherent(ndev->dev.parent, priv->desc_bat_size, priv->desc_bat, - priv->desc_bat_dma); /* Set reset mode */ ravb_write(ndev, CCC_OPC_RESET, CCC); unregister_netdev(ndev); netif_napi_del(&priv->napi[RAVB_NC]); netif_napi_del(&priv->napi[RAVB_BE]); ravb_mdio_release(priv); + dma_free_coherent(ndev->dev.parent, priv->desc_bat_size, priv->desc_bat, + priv->desc_bat_dma); pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); free_netdev(ndev); -- 2.40.1