From patchwork Tue Jun 4 10:05:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandr Mishin X-Patchwork-Id: 13684993 Received: from mx1.t-argos.ru (mx1.t-argos.ru [109.73.34.58]) (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 31C6913D29F; Tue, 4 Jun 2024 10:08:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=109.73.34.58 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717495703; cv=none; b=CnmXIGj6cU8HExr2bhXmcJ71LzOuX51Ucbqv4/yQa5uQ85sCiVY2c0YZRnjsw0xLmxCgBYFxcnBtHj4VU7TLOutWtycxApbJSNDlw3rtxX1AfkEWF8B5yTsMUKEbK5eAtGo6tYs7R0010lZORhTXDX0VfaIT1IVgRhRmSQGEsCQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717495703; c=relaxed/simple; bh=6avz5LUZ/inR3Uyxtt0j62Bs3F4d8DO/HyEZ6uiBHac=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=Lk971raWZjq02e5YwdWFg4jSiyb12EamFF+PJzca3+fFMNyrHrQJIs5j4wJyzDYlboW/Z2yUeK9vhiwm1X/Y9ucENN+P7Df4j78R7CTdSjJ50BQo0b3xV1ZTE7vJpLesgkY9m9xhc4oe9qNOIBQIWX4VwE96CR4KibP/dHucpLQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=t-argos.ru; spf=pass smtp.mailfrom=t-argos.ru; dkim=pass (2048-bit key) header.d=t-argos.ru header.i=@t-argos.ru header.b=dH0pYbAs; arc=none smtp.client-ip=109.73.34.58 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=t-argos.ru Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=t-argos.ru Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=t-argos.ru header.i=@t-argos.ru header.b="dH0pYbAs" Received: from mx1.t-argos.ru (localhost [127.0.0.1]) by mx1.t-argos.ru (Postfix) with ESMTP id 56B52100002; Tue, 4 Jun 2024 13:07:59 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=t-argos.ru; s=mail; t=1717495679; bh=8vE6tl+i2CQkzPeTqs79Tzdv02wtzECjp6uIUogF75g=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=dH0pYbAsiDnGl6HYNaimqToe8De/PssZVo8Q8q2TmQ765dUJbpsqpCnmySq16fpo3 /qcIpb9REOCOV8u/yT4W65KapglTZ/0y0qUC8Xj3LlC1V4Qy0+h0WUADdakg5YXo5a Za5DO73w4bXlYi6Doxw1PH83XVHNOwPSC6IdRNnR+ckGq+pr/tPnPLzAIpSUPpzgLc KzvwEYscSmOoXAd6nqr1XeGIFkDji1Mgcyd2LvN+Vi4GiAEayVsukYl6Fc6076Fw0b 5UEOh2lt64trvM0I9yWleEpez6qj/W2aXFHvavNj9NyXEByueVBo3A64zbaPR9OJwr JbJgc//eVcfKw== Received: from mx1.t-argos.ru.ru (ta-mail-02.ta.t-argos.ru [172.17.13.212]) by mx1.t-argos.ru (Postfix) with ESMTP; Tue, 4 Jun 2024 13:06:20 +0300 (MSK) Received: from localhost.localdomain (172.17.215.6) by ta-mail-02 (172.17.13.212) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Tue, 4 Jun 2024 13:06:00 +0300 From: Aleksandr Mishin To: Mark Bloch CC: Aleksandr Mishin , Saeed Mahameed , Leon Romanovsky , Tariq Toukan , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maor Gottlieb , Jacob Keller , Shay Drory , Jianbo Liu , Jinjie Ruan , , , , Subject: [PATCH net] net/mlx5: Fix tainted pointer delete is case of flow rules creation fail Date: Tue, 4 Jun 2024 13:05:52 +0300 Message-ID: <20240604100552.25201-1-amishin@t-argos.ru> X-Mailer: git-send-email 2.30.2 Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: ta-mail-02.ta.t-argos.ru (172.17.13.212) To ta-mail-02 (172.17.13.212) X-KSMG-Rule-ID: 1 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 185699 [Jun 04 2024] X-KSMG-AntiSpam-Version: 6.1.0.4 X-KSMG-AntiSpam-Envelope-From: amishin@t-argos.ru X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 20 0.3.20 743589a8af6ec90b529f2124c2bbfc3ce1d2f20f, {Tracking_from_domain_doesnt_match_to}, d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;t-argos.ru:7.1.1;127.0.0.199:7.1.2;mx1.t-argos.ru.ru:7.1.1, FromAlignment: s X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean, bases: 2024/06/04 07:46:00 X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 1.1.2.30, bases: 2024/06/04 05:43:00 #25435061 X-KSMG-AntiVirus-Status: Clean, skipped In case of flow rule creation fail in mlx5_lag_create_port_sel_table(), instead of previously created rules, the tainted pointer is deleted deveral times. Fix this bug by using correct flow rules pointers. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 352899f384d4 ("net/mlx5: Lag, use buckets in hash mode") Signed-off-by: Aleksandr Mishin Reviewed-by: Jacob Keller Reviewed-by: Tariq Toukan --- drivers/net/ethernet/mellanox/mlx5/core/lag/port_sel.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/port_sel.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/port_sel.c index c16b462ddedf..ab2717012b79 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lag/port_sel.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/port_sel.c @@ -88,9 +88,13 @@ static int mlx5_lag_create_port_sel_table(struct mlx5_lag *ldev, &dest, 1); if (IS_ERR(lag_definer->rules[idx])) { err = PTR_ERR(lag_definer->rules[idx]); - while (i--) - while (j--) + do { + while (j--) { + idx = i * ldev->buckets + j; mlx5_del_flow_rules(lag_definer->rules[idx]); + } + j = ldev->buckets; + } while (i--); goto destroy_fg; } }