From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-m49198.qiye.163.com (mail-m49198.qiye.163.com [45.254.49.198]) (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 190773ACA5C; Sun, 13 Sep 2026 12:52:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.254.49.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789303944; cv=none; b=mkDXT+5qIuyQ82R26A7QBNgRCf1J1EoCUmAgCEfy9OsFOSVPqke89IymcWgoTnv6Rb+FpYXILwOAzEbtEgsDNBkfYCCKc9LrtHY/ptluxS8L11VU471aThEOYaqP7ztuLgkcxJax3fu+Xzu8oYCjBHXyrrEKQvp38W2d0K3j3Qg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789303944; c=relaxed/simple; bh=o5oApsx/rdBFHW2i4W9ApDOHk5V0yHbQGMXXG9KPGvA=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=SN8qM+SJe/0tNnoiOJouQjMkvlB6fnikvh8JtES2/YYSnh1dpS4mdWJWoNYo0CN7yCehJJyhVg8ECA7auPClsjC8lmE53EB0uv/Gy737MelXNjBUuf6cx3/dOI+qX8yj0kM4yU7n5dPfr6jfaXeEEsOESrQ5Dz6y8P1aeRUTWzs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=seu.edu.cn; spf=pass smtp.mailfrom=seu.edu.cn; dkim=pass (1024-bit key) header.d=seu.edu.cn header.i=@seu.edu.cn header.b=SvSx3eZ9; arc=none smtp.client-ip=45.254.49.198 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=seu.edu.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=seu.edu.cn Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=seu.edu.cn header.i=@seu.edu.cn header.b="SvSx3eZ9" Received: from seu.edu.cn (unknown [58.241.16.34]) by smtp.qiye.163.com (Hmail) with ESMTP id 4d907a3f1; Sun, 13 Sep 2026 20:52:14 +0800 (GMT+08:00) From: Slavin Liu To: sgoutham@marvell.com, rkannoth@marvell.com, gakula@marvell.com, sbhatta@marvell.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, bolin.liu@seu.edu.cn Subject: [PATCH net] octeontx2-af: skip absent MCS blocks in PTP configuration Date: Sun, 13 Sep 2026 20:52:12 +0800 Message-Id: <20260913125212.110005-1-bolin.liu@seu.edu.cn> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-HM-Tid: 0aa09ad34e1303a1kunmddc12c282511d4 X-HM-MType: 10 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWRgWCB1ZQUpXWS1ZQUlXWQ8JGhUIEh9ZQVkaS0kaVkxLGB1MHU9KGhpIGVYeHw 5VEwETFhoSFyQUDg9ZV1kYEgtZQVlOQ1VJT0pVSk1VSE9ZV1kWGg8SFR0UWUFZT0tIVUpLSUhOQ0 NVSktLVUtZBg++ DKIM-Signature: a=rsa-sha256; b=SvSx3eZ9XAPTlfV6xVdj1s2CB71IIl9sEjpUEL6GTyLtCaAugaCoJmXCQv6lakB+8kk2LvufOfW89iA2iwrR9EREmDBn1RQye68sberrMd7Y1rn6vtKERJ4D+5OFxmbakU0fGpCN3ChDCvQSAYylgiaQtrWhRpB9WjUhNHbUhT0=; c=relaxed/relaxed; s=default; d=seu.edu.cn; v=1; bh=MPOpKAV3OBLDwzkI77dQ9BHdlH69etdDfGQUc0oQJUc=; h=date:mime-version:subject:message-id:from; A successfully probed RPM does not imply a matching MCS block. Check the independent MCS lookup before accessing PEX registers. Detected by static analysis and reviewed with AI-assisted source auditing. Fixes: 65cdc2b637a5 ("octeontx2-af: mcs: Config parser to skip 8B header") Assisted-by: LLM Signed-off-by: Slavin Liu --- drivers/net/ethernet/marvell/octeontx2/af/mcs_rvu_if.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mcs_rvu_if.c b/drivers/net/ethernet/marvell/octeontx2/af/mcs_rvu_if.c index fce22e314cac..5e24d43d5fc7 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/mcs_rvu_if.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/mcs_rvu_if.c @@ -50,6 +50,8 @@ void rvu_mcs_ptp_cfg(struct rvu *rvu, u8 rpm_id, u8 lmac_id, bool ena) /* CNF10K-B */ if (rvu->mcs_blk_cnt > 1) { mcs = mcs_get_pdata(rpm_id); + if (!mcs) + return; cfg = mcs_reg_read(mcs, MCSX_PEX_RX_SLAVE_PEX_CONFIGURATION); if (ena) cfg |= BIT_ULL(lmac_id);