From nobody Sun Nov 24 07:55:43 2024 Received: from mx0a-0016f401.pphosted.com (mx0a-0016f401.pphosted.com [67.231.148.174]) (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 5EA47212EE9; Thu, 7 Nov 2024 13:29:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.148.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730986158; cv=none; b=Lmc3IZph07MolNfEVf0KHhJdZ2GwDlk5UDoP9/Ykk8/0NK41oI5qdr53MvF7dGa6jhgezhTueNRpoDP2TkylNMHGVrh9vVdu5ATjI1roBcx6cBxvVMaOHbiC5KehmGvZC0SeF/8QCKE4mBkQh87hXq7JXj1R2I3Wi0eVZmQpwVE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730986158; c=relaxed/simple; bh=YnnZEG4iqErUeeinyFBCzZGHYcULm1bNkGNeQask9QQ=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=nQrGE+I2ZpK0E8kN3Q6WoFMHa9yby566fa7tcl1ED9pbKYIbe+zJy5VfpJMz9MwBViskmkRIa/Rhd1GEs5U1rFuS0WRuVn26CUsQlgps6otUmMTVX5gN4pUvhbtRN0RZW65qXRWCytSo8QaP5TQHf+e6i2RzHArIFo3rb2Q60O4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=marvell.com; spf=pass smtp.mailfrom=marvell.com; dkim=pass (2048-bit key) header.d=marvell.com header.i=@marvell.com header.b=IsXGrVgU; arc=none smtp.client-ip=67.231.148.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=marvell.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=marvell.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=marvell.com header.i=@marvell.com header.b="IsXGrVgU" Received: from pps.filterd (m0431384.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4A7Ca41g018109; Thu, 7 Nov 2024 05:29:03 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pfpt0220; bh=4 ibQwkNXpH7ZgvIsTUGJIvdNeUAyRmx4ORvMZVfZ734=; b=IsXGrVgUK0fDiQ6LR ZhliDgtvdM3+YHOkVsWWBH7Hu854ZKtzwlR7Hmzjo+PBHx3hK/Ing4ZvLR5iNTJ6 7/eiRsm8+kOgiWzGoZrX31rQdOqQ7EV1CT0G/lSAPMH5tb8Vo587WfZEysgTBZIw FO8Tg/7xqRCxWR6DXUvFNb4orhj3gIO7NqICJWeMGqjGF5YbezdDnQGOQVq0VaGJ 6zf9ymr79lyCU8DgbAQCFaPFoOGNC5AnnU9kaA64Ba/4V6PJtU8zRaenSj+djJNv dYV1OK0wRm0NBgX08fgrFCGSnQRbQCGYej1Xc3qvquwdPEJ04JeYumut9LFAiPxd 7MLbw== Received: from dc5-exch05.marvell.com ([199.233.59.128]) by mx0a-0016f401.pphosted.com (PPS) with ESMTPS id 42rwpng3hs-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Nov 2024 05:29:03 -0800 (PST) Received: from DC5-EXCH05.marvell.com (10.69.176.209) by DC5-EXCH05.marvell.com (10.69.176.209) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.4; Thu, 7 Nov 2024 05:29:02 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH05.marvell.com (10.69.176.209) with Microsoft SMTP Server id 15.2.1544.4 via Frontend Transport; Thu, 7 Nov 2024 05:29:02 -0800 Received: from ubuntu-PowerEdge-T110-II.sclab.marvell.com (unknown [10.106.27.86]) by maili.marvell.com (Postfix) with ESMTP id E31523F708C; Thu, 7 Nov 2024 05:29:01 -0800 (PST) From: Shinas Rasheed To: , CC: , , , , , , , , , , Shinas Rasheed , Veerasenareddy Burru , Andrew Lunn , "David S. Miller" , "Eric Dumazet" , Jakub Kicinski , Paolo Abeni Subject: [PATCH net v2 4/7] octeon_ep: add protective null checks in napi callbacks for cnxk cards Date: Thu, 7 Nov 2024 05:28:43 -0800 Message-ID: <20241107132846.1118835-5-srasheed@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241107132846.1118835-1-srasheed@marvell.com> References: <20241107132846.1118835-1-srasheed@marvell.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: pXpXKMRYR67F_T_4Y9OIMvAL4Kh8csOW X-Proofpoint-ORIG-GUID: pXpXKMRYR67F_T_4Y9OIMvAL4Kh8csOW X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.687,Hydra:6.0.235,FMLib:17.0.607.475 definitions=2020-10-13_15,2020-10-13_02,2020-04-07_01 Content-Type: text/plain; charset="utf-8" During unload, at times the OQ parsed in the napi callbacks have been observed to be null, causing system crash. Add protective checks to avoid the same, for cnxk cards. Signed-off-by: Shinas Rasheed --- V2: - Split into a separate patch - Added more context V1: https://lore.kernel.org/all/20241101103416.1064930-3-srasheed@marvell.c= om/ drivers/net/ethernet/marvell/octeon_ep/octep_cnxk_pf.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_cnxk_pf.c b/drive= rs/net/ethernet/marvell/octeon_ep/octep_cnxk_pf.c index 5de0b5ecbc5f..65a8dc1d492b 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_cnxk_pf.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_cnxk_pf.c @@ -638,7 +638,14 @@ static irqreturn_t octep_rsvd_intr_handler_cnxk_pf(voi= d *dev) static irqreturn_t octep_ioq_intr_handler_cnxk_pf(void *data) { struct octep_ioq_vector *vector =3D (struct octep_ioq_vector *)data; - struct octep_oq *oq =3D vector->oq; + struct octep_oq *oq; + + if (!vector) + return IRQ_HANDLED; + oq =3D vector->oq; + + if (!oq || !(oq->napi)) + return IRQ_HANDLED; =20 napi_schedule_irqoff(oq->napi); return IRQ_HANDLED; --=20 2.25.1