From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751549AbdIRAUa (ORCPT ); Sun, 17 Sep 2017 20:20:30 -0400 Received: from omzsmtpe03.verizonbusiness.com ([199.249.25.208]:36148 "EHLO omzsmtpe03.verizonbusiness.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750851AbdIRAU0 (ORCPT ); Sun, 17 Sep 2017 20:20:26 -0400 From: "Levin, Alexander (Sasha Levin)" Cc: "sudarsana.kalluru@cavium.com" , "Sudarsana Reddy Kalluru" , Yuval Mintz , "David S . Miller" , "Levin, Alexander (Sasha Levin)" X-Host: viking.odc.vzwcorp.com To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" Subject: [PATCH for 4.9 07/39] qed: Fix possible system hang in the dcbnl-getdcbx() path. Thread-Topic: [PATCH for 4.9 07/39] qed: Fix possible system hang in the dcbnl-getdcbx() path. Thread-Index: AQHTMBPQ5i2/UQaDpECLUWcsl5z3Xg== Date: Mon, 18 Sep 2017 00:19:38 +0000 Message-ID: <20170918001922.7048-7-alexander.levin@verizon.com> References: <20170918001922.7048-1-alexander.levin@verizon.com> In-Reply-To: <20170918001922.7048-1-alexander.levin@verizon.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.144.60.250] Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by nfs id v8I0KY7l011370 From: "sudarsana.kalluru@cavium.com" [ Upstream commit 62289ba27558553871fd047baadaaeda886c6a63 ] qed_dcbnl_get_dcbx() API uses kmalloc in GFT_KERNEL mode. The API gets invoked in the interrupt context by qed_dcbnl_getdcbx callback. Need to invoke this kmalloc in atomic mode. Signed-off-by: Sudarsana Reddy Kalluru Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/qlogic/qed/qed_dcbx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c index a4789a93b692..9d59cb85c012 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c @@ -1222,7 +1222,7 @@ static struct qed_dcbx_get *qed_dcbnl_get_dcbx(struct qed_hwfn *hwfn, { struct qed_dcbx_get *dcbx_info; - dcbx_info = kzalloc(sizeof(*dcbx_info), GFP_KERNEL); + dcbx_info = kmalloc(sizeof(*dcbx_info), GFP_ATOMIC); if (!dcbx_info) return NULL; -- 2.11.0