From nobody Sat Nov 23 12:12:38 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 076B11FEFDE; Wed, 13 Nov 2024 11:13:42 +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=1731496424; cv=none; b=lgENysUphWtBwtAjTvteBkXn2byrhtgNJufRT82YMX21KC/yd9mixGmhAFdXrYfSttCdsBoEfhP2a8cXDGdZnQc11rkmVDXudxNC3rW9vMFmVY7QsI/9ch4Nm+J0KKHw9DaJ8pqZDYsqExwWr/6aTsakjH1PNEfsTsZcsHjjaYA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731496424; c=relaxed/simple; bh=A22PI+ae8ZVpaPRQ6udLcLq/Yyb1U1TYd8V4q0ZaOss=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=BbNduyk+rg9af0uyd1U2c3xVfANLXw+DQwskK+XaJhk16wC4TtGfVIKNoVrJsqa5DLPe5pEhysw36mRDPeTVBVO3A5PRDtq+yYeSRRVLbiOH58aXesUDJ3mlUcOeq554cOAuvG7916JWCHwY49XQNJUPVm+lJHlyfUbpfkb+Xus= 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=AnE93TzW; 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="AnE93TzW" 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 4AD8WPYD001685; Wed, 13 Nov 2024 03:13:34 -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=c R+O8JlKd4NixP/9Jc5T8cC2dkX1tP9ZWb1hKV6/kSQ=; b=AnE93TzWBghSZMHpt JjjKg9+YoOcTeloK+W3yYieg0DhCKcquhTGemT/uHvUxRFMpgHiA4Xj5ugK5G495 hXec0+Ve/snJosXWxB0DaB69F9kJdLOREh6Wv1Wv0fFZBbQs9ehsmKCSbeA63rr3 FbIJ9ijuYz8QtIouUEFKpNrfSRyvDWfF3jQSrOdYy8fcsbGCLiDjk2U/ufXFNEkZ rEAoo6kwsDOyt6JDixIXMb6SKUnvYDOqTBr0SIisyRSNGDthJfvB+WcCrUGg10AB YaoayWUjnId8GvzNtMR5PJ60dPdpgYUqGtYfGhdlk8KhwwxDLw8YIrLulf5/FYt9 hIjEg== Received: from dc5-exch05.marvell.com ([199.233.59.128]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 42v5s2tqfm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 13 Nov 2024 03:13:34 -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; Wed, 13 Nov 2024 03:13:32 -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; Wed, 13 Nov 2024 03:13:32 -0800 Received: from ubuntu-PowerEdge-T110-II.sclab.marvell.com (unknown [10.106.27.86]) by maili.marvell.com (Postfix) with ESMTP id 5E9DF3F7040; Wed, 13 Nov 2024 03:13:32 -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 v4 6/7] octeon_ep_vf: add protective null checks in napi callbacks for cn9k cards Date: Wed, 13 Nov 2024 03:13:18 -0800 Message-ID: <20241113111319.1156507-7-srasheed@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241113111319.1156507-1-srasheed@marvell.com> References: <20241113111319.1156507-1-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: Ow5mM_CZBPQ62nHHw6rKGSkcdE_xTGFa X-Proofpoint-ORIG-GUID: Ow5mM_CZBPQ62nHHw6rKGSkcdE_xTGFa 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. Fixes: cb7dd712189f ("octeon_ep_vf: Add driver framework and device initial= ization") Signed-off-by: Shinas Rasheed --- V4: - No changes V3: https://lore.kernel.org/all/20241108074543.1123036-7-srasheed@marvell.c= om/ - Added back "Fixes" to the changelist V2: https://lore.kernel.org/all/20241107132846.1118835-7-srasheed@marvell.c= om/ - 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