From nobody Sun Nov 24 23:26:39 2024 Received: from mx0b-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 08C3418953D; Fri, 1 Nov 2024 10:34:36 +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=1730457279; cv=none; b=cKFJptRHBcfio2dV1EKiIj7rRlqIJVY4hOCJccf5XrCZpeJt5ZbW63F9/N/umPm2LXIUEqarC2EwgZ1UUSrDutimG44nsWLFnlWlbPh+/bbDhWoB9w8sTMaJmbVeLKNopOpQp/6MM4RA7GFuZKk3rixucXAB/Ny7u2ytTcjfUW0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730457279; c=relaxed/simple; bh=7CEh2pgSVWlTpnqxUxjDRbI8zmDr6/bLH7zkmX+pNnc=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=pCOHfL2tIsO662Yjy6EqDDh9Z3N2sXfgoLZ9drp2FPkGGCcv36Zo1iI/tuFrMYA7qLVP0xWZM5dvFKvQ3ohDKDuIl845Xnrg7XJtiBcsJkjw+/D334Xibf27DwGzdmQX+lNY3QwXHavSQ0apa3JoA4qksC99ILZs6b7ikBXvkU8= 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=Lb0Tfyel; 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="Lb0Tfyel" Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4A16rYv3025517; Fri, 1 Nov 2024 03:34:26 -0700 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=z lRbPW5YCEDK1yec4ABq8Ou+8EXNk0quIShm9NOr+Qw=; b=Lb0TfyelmFRpfMt2C 6Ab26Qwx4Miwd1YnUTH2fQzBrsl4MR4DmdAiVM9j1yp4ekxwn0tI+6006okl3Jzl dojaX/VVpzgPkWD8ZDy2hdPVAaFl4c5zvQOkoK+KEXL7IAcIMBSMpGiV3ePZrBrU foRH/PiJipMDPPylhEXRaaGkmk9Askegel50r5fK4ET21ObGc37jihJdksOIYxEo p9vgZ7rIlHZUmiJhxb63EGf+nCnQTjBdMzbJf/8wASjBN9oZfz72oEIrXu/NNxDg tiHFxpMJ2iPvfkwSNotxdvBW0g49BtCZ7impM4/T9tYYTBuDKbMRS2qIUbvHi7c4 ViJhA== Received: from dc5-exch05.marvell.com ([199.233.59.128]) by mx0a-0016f401.pphosted.com (PPS) with ESMTPS id 42mt440ddh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 01 Nov 2024 03:34:26 -0700 (PDT) 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; Fri, 1 Nov 2024 03:34:25 -0700 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; Fri, 1 Nov 2024 03:34:25 -0700 Received: from ubuntu-PowerEdge-T110-II.sclab.marvell.com (unknown [10.106.27.86]) by maili.marvell.com (Postfix) with ESMTP id 9689A3F704C; Fri, 1 Nov 2024 03:34:24 -0700 (PDT) From: Shinas Rasheed To: , CC: , , , , , , , , , "Shinas Rasheed" , Veerasenareddy Burru , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Satananda Burla , Abhijit Ayarekar Subject: [PATCH net v1 2/3] octeon_ep: add checks to fix NULL pointer dereferences Date: Fri, 1 Nov 2024 03:34:14 -0700 Message-ID: <20241101103416.1064930-3-srasheed@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241101103416.1064930-1-srasheed@marvell.com> References: <20241101103416.1064930-1-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: xKpQqWP8Z4NjEe2gl7_zkc2Or2Fo4AJN X-Proofpoint-ORIG-GUID: xKpQqWP8Z4NjEe2gl7_zkc2Or2Fo4AJN X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 Content-Type: text/plain; charset="utf-8" Add Checks to avoid NULL pointer references that might happen in rare and corner cases Fixes: 6a610a46bad1 ("octeon_ep: add support for ndo ops") Fixes: 1f2c2d0cee02 ("octeon_ep: add hardware configuration APIs") Fixes: 0807dc76f3bf ("octeon_ep: support Octeon CN10K devices") Signed-off-by: Shinas Rasheed --- drivers/net/ethernet/marvell/octeon_ep/octep_cn9k_pf.c | 9 ++++++++- drivers/net/ethernet/marvell/octeon_ep/octep_cnxk_pf.c | 9 ++++++++- drivers/net/ethernet/marvell/octeon_ep/octep_main.c | 3 +++ 3 files changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_cn9k_pf.c b/drive= rs/net/ethernet/marvell/octeon_ep/octep_cn9k_pf.c index b5805969404f..b87336b2e4b9 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_cn9k_pf.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_cn9k_pf.c @@ -617,7 +617,14 @@ static irqreturn_t octep_rsvd_intr_handler_cn93_pf(voi= d *dev) static irqreturn_t octep_ioq_intr_handler_cn93_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; 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; diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/= net/ethernet/marvell/octeon_ep/octep_main.c index ff72b796bd25..dc783c568e2c 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c @@ -1016,6 +1016,9 @@ static void octep_get_stats64(struct net_device *netd= ev, struct octep_iq *iq =3D oct->iq[q]; struct octep_oq *oq =3D oct->oq[q]; =20 + if (!iq || !oq) + return; + tx_packets +=3D iq->stats.instr_completed; tx_bytes +=3D iq->stats.bytes_sent; rx_packets +=3D oq->stats.packets; --=20 2.25.1