From nobody Fri Nov 29 08:45:32 2024 Received: from mail-pg1-f182.google.com (mail-pg1-f182.google.com [209.85.215.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 399E826AD0; Sun, 22 Sep 2024 18:17:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727029068; cv=none; b=ILR0gysqhtyaot2OVXCIi30AIc1wqhBa/5IRcM2keUZ1Hhk873Xov01SEyZzAVvdJ362hDeKPwtakCWR8x8rajLu2to3kb/96WHOEj3SDkgSBka5dvC7UCl+vdNcqdDim5fSTZO6CCCrHVrvE7tZZKcafusqJMyCDyNa5AyhVh8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727029068; c=relaxed/simple; bh=rZ6b3wmRBPEsCGtllsYERcy1LvK8nRW1J6EAqGDXdG0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=lcfVlTFxjWnpHIwM5skkCInXatD11UhIQ8eCgH8jtTWk+XHlk7TJsiANUyfYAhfDe9cbbljmTrO7ReEszKseuvnu0UCOc3MWX37lZDx8dctRSzJe1v8Y6+VuSbcqWiWSM3ABTzeEMIua5JR2h5mB+rcKKtHuqf+hm4G3cFpuvhE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=YfltYumk; arc=none smtp.client-ip=209.85.215.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="YfltYumk" Received: by mail-pg1-f182.google.com with SMTP id 41be03b00d2f7-7c6b4222fe3so2306246a12.3; Sun, 22 Sep 2024 11:17:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1727029066; x=1727633866; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=n/c69hqY01XgTVDN3EgAstJmT/RyGJ73fcAPMsJ4AMU=; b=YfltYumkRwjzPwqWfKBkyuJEtrxtT1zx55YJbSIbR0r8ccaAIxGqdwYhXlbUkt6MPO 8RMhAMO1r0Ay0MLSUi9yG/gMmLZnB+WYctEqxO6zjLVPwufrPJ1V4CReNoRBFg7fgrjH VQBWdDiYf3so8varp49zlTgKIFM6jhl3oR7Joc4XqWm9Ivdt4gmZm1OdkA+ZtkilDv2S oBvNJbdXTqHnCoPBuFdtnXgeZPiwvB6ZKUKyGhePFg5MVBLNqATo/QQZcX91HhLYDE8Y +X5u9BcFaXJ+zWKO/av6Y2U9scvPt3lpfEDj8ywP2k+BjkNJ9dw+t38F5V0zYOtGkw+x ai0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1727029066; x=1727633866; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=n/c69hqY01XgTVDN3EgAstJmT/RyGJ73fcAPMsJ4AMU=; b=cONZx/WmGd4DUXq0v+PHPar/OHTVNfMG/6pyPDMBipXaSW3V0/CvndF3c1mCCASKmY 0wAbUmfkbK75766EOBMnc3ExbyY3k8mC4t88eD+OMjKYgo7olaYbIen1Ji0xFjC77IBb vPXEFjciggmqddxlyEbD0QpDa+BJbHWomZvIQME6J0GX5L+gOP4bGE2dAGM0x4dkf3RK cOVk5jwzcvQnJQsZ49RMksf2g3O+9e2F6ysSASopGO9uI3245qGvq1UPoBj4tRciQRrC vOxXL2B0ACrflktoGmZ8bEyoWTOySlkiDHsWtzs3VX6BG6+D8sO/b0tZn0rToogvhI7R It9w== X-Forwarded-Encrypted: i=1; AJvYcCWuP2ToWjdI7mi70eDPpHcivLkt/QVlZEnIcQvac7TZLblEx8zfA25CQWnwY8+v1WBYxK46a9UC@vger.kernel.org, AJvYcCXh+feqgSm9c6qeGRjRV7w9W4dpRtXEXwox21XMvMQdYxodli229RFEdfNAAIW9cqP6rlCW31V0ejMzH08=@vger.kernel.org X-Gm-Message-State: AOJu0YyPvwLHr5mwyRE4wnWRs7odqJQD5UPxamfV2nm/rgDQnpGzqv3u z0GmApXdHJjTtBoRszlOwcnOO9mNHP+51GA+4GpYmmmOTgGGi9kJ X-Google-Smtp-Source: AGHT+IHCsG4FOhEk/055Ejqr94ExyoroChpIyrCql1L7Uuxy9TZE64gkX7RiVbEHve7Wg6Mx+1NJzQ== X-Received: by 2002:a17:90a:3f82:b0:2d3:c4d3:de19 with SMTP id 98e67ed59e1d1-2dd80acf02dmr10893464a91.0.1727029066525; Sun, 22 Sep 2024 11:17:46 -0700 (PDT) Received: from ubuntu.worldlink.com.np ([27.34.65.190]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2dd6eec7b36sm7868359a91.30.2024.09.22.11.17.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Sep 2024 11:17:45 -0700 (PDT) From: Dipendra Khadka To: florian.fainelli@broadcom.com, bcm-kernel-feedback-list@broadcom.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: Dipendra Khadka , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] Staging: net/ethernet/broadcom: Add error pointer check in bcmsysport.c Date: Sun, 22 Sep 2024 18:17:37 +0000 Message-ID: <20240922181739.50056-1-kdipendra88@gmail.com> X-Mailer: git-send-email 2.43.0 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 Content-Type: text/plain; charset="utf-8" Smatch reported following: ''' drivers/net/ethernet/broadcom/bcmsysport.c:2343 bcm_sysport_map_queues() er= ror: 'dp' dereferencing possible ERR_PTR() drivers/net/ethernet/broadcom/bcmsysport.c:2395 bcm_sysport_unmap_queues() = error: 'dp' dereferencing possible ERR_PTR() ''' Adding error pointer check before dereferencing 'dp'. Signed-off-by: Dipendra Khadka --- drivers/net/ethernet/broadcom/bcmsysport.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ether= net/broadcom/bcmsysport.c index c9faa8540859..b849c11e2bb6 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -2337,6 +2337,9 @@ static int bcm_sysport_map_queues(struct net_device *= dev, unsigned int num_tx_queues; unsigned int q, qp, port; =20 + if (IS_ERR(dp)) + return PTR_ERR(dp); + /* We can't be setting up queue inspection for non directly attached * switches */ @@ -2392,6 +2395,9 @@ static int bcm_sysport_unmap_queues(struct net_device= *dev, unsigned int num_tx_queues; unsigned int q, qp, port; =20 + if (IS_ERR(dp)) + return PTR_ERR(dp); + port =3D dp->index; =20 num_tx_queues =3D slave_dev->real_num_tx_queues; --=20 2.43.0