From nobody Sat Nov 23 12:39:41 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 ACAAA200130; Wed, 13 Nov 2024 11:13:44 +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=1731496426; cv=none; b=Tv4DFNMr3vECGkZuN+ZD6PetjAEz3maiX9Pazn6p7Oznu0Cm9yO+7JcivbfD2UQ+uPUUjRvTlshD0VXAmHqGgu897KIQy48eCSBR/XBSSPEgmn3oe/3tHGp98pdv9xpgVjtIZexUA3x/geJ30LpufCe0TwRATuKCLORccsk4wp4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731496426; c=relaxed/simple; bh=0NKxQZ2eJIO94As+SZU5UQtSG1PepPeFOGfQrt2dgVs=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tQ9AezGKbGVHeMyEGu+QQrtQYZfvaQZd8/OorB1kAEiCgAVrzspmAB1RPWqjSuq4XUDqY/W/hyeeKFBeekHCgBo933FYPhWb0XuCA9A0wg9727LdQUEUHlir3Zsv3jhzAAqnvjSz3hbTmXXKJ5WOZjLDcnFKA4VPIuLbJ2eAVhs= 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=SE36dAjP; 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="SE36dAjP" Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4ACFpGYn025821; Wed, 13 Nov 2024 03:13:30 -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=J YHP6zG5isnC7ZyUgogxd68rMkjJZJLPn6DZH60CfeI=; b=SE36dAjPMX76sOPRL XTiwvXUp4+L2lRJebOqZaf+B98Zrc94syjQP4NROvTpvKvfadMwCn1dQeFrXnBkb QvtRTk7dHAuUx1ylOQUEMoY9aOpvLRZT19AwNZfdlzZzI/3JSQELOYHGy3fPpi3k zq6dtUwtu0nnNPRW9wJEJa1Qc+Ckyn9v3rRnL4tAforrgkCW5gLXE/DHT9WMDkML p9NkzLPvIlONbDtT91AIMJJ83IwFAEXZkWrvi0k3ltDuku2LPppttW2iRDUolgTD KelCB/QVE1vHkGkMjn91yJpIvKdOiVcTiZ66e4HTWmKNYjbPLy4NXmSv86X7GER/ wlZPA== Received: from dc5-exch05.marvell.com ([199.233.59.128]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 42va1625t9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 13 Nov 2024 03:13:30 -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 03:13:29 -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 03:13:29 -0800 Received: from ubuntu-PowerEdge-T110-II.sclab.marvell.com (unknown [10.106.27.86]) by maili.marvell.com (Postfix) with ESMTP id D10713F7040; Wed, 13 Nov 2024 03:13:28 -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 v4 4/7] octeon_ep: add protective null checks in napi callbacks for cnxk cards Date: Wed, 13 Nov 2024 03:13:16 -0800 Message-ID: <20241113111319.1156507-5-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: aYUyXPW9LrQJwvFJ08AOKbKKvZpqgI-G X-Proofpoint-ORIG-GUID: aYUyXPW9LrQJwvFJ08AOKbKKvZpqgI-G 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" 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. Fixes: 0807dc76f3bf ("octeon_ep: support Octeon CN10K devices") Signed-off-by: Shinas Rasheed --- V4: - No Changes V3: https://lore.kernel.org/all/20241108074543.1123036-5-srasheed@marvell.c= om/ - Added back "Fixes" to the changelist V2: https://lore.kernel.org/all/20241107132846.1118835-5-srasheed@marvell.c= om/ - 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