From nobody Sun Nov 24 08:01:23 2024 Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) (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 73EE221315C; Thu, 7 Nov 2024 13:29:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.156.173 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730986161; cv=none; b=iKhwCL8lgsrBCb15LvTkuoCjQ+w4kuZQA4X01JmBwjixHN138hgHtMyzu0OXkdWZYnLaI/G3ERf1l+hXtq/M5h+PFfGytFdcycEeRSJPs070TZomUMYtbEVJhWb4XI6by+5o1lRgOL7UaS8he9ooknDePgZ2+bJfEH5U8nJVBRE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730986161; c=relaxed/simple; bh=gEXNZK8tjMvX7CHlupLMzdGKQIiDVQ2/WoObNxWhKKE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Q8TIWM+ifHcZr8c81Bf3lzTGX2ulDH1XWsO57cfYrgBgmz7GjD97QoOXO9Ytd8h6OIunST+S4yCXLAN/2onECEyDm81CrMSIO7youfm2+Pto55aGryRxYhrf83SLWxUuJ/qv76NdJxkagC5twhcwy1ue1/jsZ2lM6jQp/5bm5Qs= 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=GoIynWSD; arc=none smtp.client-ip=67.231.156.173 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="GoIynWSD" Received: from pps.filterd (m0431383.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4A7B7P6S012398; Thu, 7 Nov 2024 05:29:07 -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=A EvaILl35UUDiYvFEYmOSSbJIfTyuAoaQslrCVG6AZs=; b=GoIynWSDNisqeaiLw kacEyox7cUwx8XVo524f3HjyopKH6t/V2vvhclV2NOJ+USnvvM/kXph7W9o6wjTF PmQRtWwMIgE9zEBb1/2lGcegVqOZSooYnMlo9J9QJhrqbN5WCeGIb94m+CE3y/1s Vjb4ea3dcBEV7W65pdsNrs2J2V5/jgOGD8dT/IbfOd8+WCztr0aIY8TPyUrfBEYM L9fzQMrgHOLZ9tzluHbaDODyrnz3bSORjkqcFwXA4PVLuaL3qjDjP1QIvPbIXUwn //WnDRAOIyHuXNiDr2WwDCqAobEjlAEDAb38brfvZvntryqopa9tg6u0eDk3aCQ5 BsgeQ== Received: from dc5-exch05.marvell.com ([199.233.59.128]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 42rvcw096a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Nov 2024 05:29:07 -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 05:29:05 -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 05:29:05 -0800 Received: from ubuntu-PowerEdge-T110-II.sclab.marvell.com (unknown [10.106.27.86]) by maili.marvell.com (Postfix) with ESMTP id 0132A3F708C; Thu, 7 Nov 2024 05:29:04 -0800 (PST) From: Shinas Rasheed To: , CC: , , , , , , , , , , Shinas Rasheed , Veerasenareddy Burru , Satananda Burla , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Subject: [PATCH net v2 6/7] octeon_ep_vf: add protective null checks in napi callbacks for cn9k cards Date: Thu, 7 Nov 2024 05:28:45 -0800 Message-ID: <20241107132846.1118835-7-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-ORIG-GUID: 1FVwNhN7IngaKerpmRZQ2QoaIz0tsNdb X-Proofpoint-GUID: 1FVwNhN7IngaKerpmRZQ2QoaIz0tsNdb 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 cn9k cards. Signed-off-by: Shinas Rasheed --- V2: - Split into a separate patch - Added more context V1: https://lore.kernel.org/all/20241101103416.1064930-4-srasheed@marvell.c= om/ drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_cn9k.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_cn9k.c b/dr= ivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_cn9k.c index 88937fce75f1..f1b7eda3fa42 100644 --- a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_cn9k.c +++ b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_cn9k.c @@ -273,8 +273,14 @@ static irqreturn_t octep_vf_ioq_intr_handler_cn93(void= *data) struct octep_vf_oq *oq; u64 reg_val; =20 - oct =3D vector->octep_vf_dev; + if (!vector) + return IRQ_HANDLED; + oq =3D vector->oq; + if (!oq) + return IRQ_HANDLED; + + oct =3D vector->octep_vf_dev; /* Mailbox interrupt arrives along with interrupt of tx/rx ring pair 0 */ if (oq->q_no =3D=3D 0) { reg_val =3D octep_vf_read_csr64(oct, CN93_VF_SDP_R_MBOX_PF_VF_INT(0)); --=20 2.25.1