From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.smtp-ext.broadcom.com (relay.smtp-ext.broadcom.com [192.19.166.228]) (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 8D6AF27B340; Fri, 18 Sep 2026 00:12:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.19.166.228 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789690381; cv=none; b=Fu10L8FT2FJ5ijaZ2wyBPArkRvXbkg0Z/c75mfO8MRLRsy4+auacn1MqIs16mkbjW3ORbFDbrJ8STEqsLaUcT/Shtp0UFq3CDikrVxmAML8sj1WGZUj6lphoZatic1Oxr+vj+jcFLHvjnp6fUJ9Cr62s+ytnB0x2oInAZ/2qQ+8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789690381; c=relaxed/simple; bh=OU252J2ZnSmRRNfbObL7zii9NVSAf7XcjVRwZ+SM6XI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=i/9RhKqVOSx/HE9NgzUT/BTqvDo8ttFRlqQQgXSqTnLOCY73esNcD2HjAKswMbHsmNwK2u18gX3+SFAZtPSKMmXkmaLRHseXtiSSYokB24oPT36FI/jOU147cI1g2kiPvdhXTH+KTe1lpyVUjpwyUIDeIsemz/1Sn4xAYJOSs/Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=broadcom.com; spf=fail smtp.mailfrom=broadcom.com; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b=is5mYRvy; arc=none smtp.client-ip=192.19.166.228 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=broadcom.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=broadcom.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="is5mYRvy" Received: from mail-lvn-it-01.broadcom.com (mail-lvn-it-01.lvn.broadcom.net [10.36.132.253]) by relay.smtp-ext.broadcom.com (Postfix) with ESMTP id D87CDC051047; Thu, 17 Sep 2026 17:07:40 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 relay.smtp-ext.broadcom.com D87CDC051047 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=broadcom.com; s=dkimrelay; t=1789690060; bh=OU252J2ZnSmRRNfbObL7zii9NVSAf7XcjVRwZ+SM6XI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=is5mYRvyqWxj7C7qRUbFgGGoQzfyxlhhShd+VmzXB7ERSU05Sbxdeuezutf2vdkgq qjfGYVAyA9Ws3RPAO/jQW62He2AJIlHkqXs6KwwyExuD6urieviHcAg0ByQSEGVRin pmDjOo8Z3vZvsDaXYwczk0Xk9PtUeoctlhTYNnsk= Received: from stbirv-lnx-1.igp.broadcom.net (stbirv-lnx-1.igp.broadcom.net [10.67.48.32]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail-lvn-it-01.broadcom.com (Postfix) with ESMTPSA id ACCADACC; Thu, 17 Sep 2026 17:07:40 -0700 (PDT) From: Florian Fainelli To: netdev@vger.kernel.org Cc: Florian Fainelli , Cursor , Doug Berger , Broadcom internal kernel review list , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Zak Kemble , Simon Horman , Ryo Takakura , linux-kernel@vger.kernel.org (open list), Nicolai Buchwitz Subject: [PATCH net 2/8] net: bcmgenet: initialize u64 stats seq counter for all queues Date: Thu, 17 Sep 2026 17:07:26 -0700 Message-Id: <20260918000732.276506-3-florian.fainelli@broadcom.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260918000732.276506-1-florian.fainelli@broadcom.com> References: <20260918000732.276506-1-florian.fainelli@broadcom.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit bcmgenet_gstrings_stats statically defines ethtool statistics for queues 0 through GENET_MAX_MQ_CNT (4). However, bcmgenet_probe() only initialized the u64_stats_sync seq counter up to priv->hw_params->rx_queues and priv->hw_params->tx_queues. Since priv->hw_params->rx_queues is 0 across all hardware versions (and priv->hw_params->tx_queues is 0 on GENET V1), rings 1..4 have uninitialized u64_stats_sync structures. When ethtool -S is run on 32-bit kernels, bcmgenet_get_ethtool_stats() reads stats from rx_rings[1..4], causing lockdep warnings due to the uninitialized sequence counters. Initialize the sequence counters for all GENET_MAX_MQ_CNT + 1 queues. Fixes: ffc2c8c4a714 ("net: bcmgenet: Initialize u64 stats seq counter") Assisted-by: LLM Co-authored-by: Cursor Change-Id: I6c3debbd9fa5e7a151789fccf3d9a38db184f434 --- drivers/net/ethernet/broadcom/genet/bcmgenet.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index 7b089de9484e..055e1362173b 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -4134,10 +4134,10 @@ static int bcmgenet_probe(struct platform_device *pdev) priv->rx_rings[i].rx_max_coalesced_frames = 1; /* Initialize u64 stats seq counter for 32bit machines */ - for (i = 0; i <= priv->hw_params->rx_queues; i++) + for (i = 0; i <= GENET_MAX_MQ_CNT; i++) { u64_stats_init(&priv->rx_rings[i].stats64.syncp); - for (i = 0; i <= priv->hw_params->tx_queues; i++) u64_stats_init(&priv->tx_rings[i].stats64.syncp); + } /* libphy will determine the link state */ netif_carrier_off(dev); -- 2.34.1