From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 60CD7C433FE for ; Sun, 14 Nov 2021 07:05:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3C66160E08 for ; Sun, 14 Nov 2021 07:05:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229563AbhKNHIp (ORCPT ); Sun, 14 Nov 2021 02:08:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:42682 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229532AbhKNHIo (ORCPT ); Sun, 14 Nov 2021 02:08:44 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id B9A6C60FE7; Sun, 14 Nov 2021 07:05:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1636873551; bh=mP+R9XN/7Ln1caAxXdcVrttNBHgkoW7PJMTcfPqXWY8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=XTCXvZbIrsC8H/wSebdOicUXzaRZTRU6CiW9grwd1wEHMuRzJkgIDr0DaP/E357F9 2F6eUNrgZ8p1U4GKhNQJ5Ppx8fO+PWCJray5uDNyzYaeftTbL7QWuyFiEovoKd3JCq SWrocMvjcAsdHqDFbDr9J2zn8zvMVIDJxzfv8uEd4lzGcPHhClOgrqdutBvx93SQGH nQ0QtuQI4dWjIaI02MHa0oFeOIYDh2EfB9PANiSfIPFn6v/5oXcuVjZysZrGzYTj3d Jb41e1IY/3ItnkWWwpCLse92i8Iq/8uU+zsjIVVUkbgLWFnpKryK9XGDAGF2W+t4AU 9E515aw/fbuBQ== Date: Sun, 14 Nov 2021 09:05:47 +0200 From: Leon Romanovsky To: Jason Gunthorpe Cc: Jinpu Wang , RDMA mailing list , Haris Iqbal Subject: Re: Missing infiniband network interfaces after update to 5.14/5.15 Message-ID: References: <20211112142356.GC876299@ziepe.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211112142356.GC876299@ziepe.ca> Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Fri, Nov 12, 2021 at 10:23:56AM -0400, Jason Gunthorpe wrote: > On Fri, Nov 12, 2021 at 09:23:04AM +0100, Jinpu Wang wrote: > > On Thu, Nov 11, 2021 at 12:29 PM Leon Romanovsky wrote: > > > > > > On Thu, Nov 11, 2021 at 08:48:08AM +0100, Jinpu Wang wrote: > > > > Hi Jason, hi Leon, > > > > > > > > We are seeing exactly the same error reported here: > > > > https://bugzilla.redhat.com/show_bug.cgi?id=2014094 > > > > > > > > I suspect it's related to > > > > https://lore.kernel.org/all/cover.1623427137.git.leonro@nvidia.com/ > > > > > > > > Do you have any idea, what goes wrong? > > > > > > I can't reproduce it with latest Fedora 34 RPM, which I downloaded from here > > > https://koji.fedoraproject.org/koji/buildinfo?buildID=1851842 > > > > > > and also with kernel-5.14.7-200.fc34.x86_64 version mentioned in the bug > > > report. > > > > > > [leonro@c-235-8-1-005 ~]$ uname -a > > > Linux c-235-8-1-005 5.14.7-200.fc34.x86_64 #1 SMP Wed Sep 22 14:54:28 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux > > > [leonro@c-235-8-1-005 ~]$ rdma dev > > > 0: ibp8s0f0: node_type ca fw 2.42.5000 node_guid 1c34:da03:0007:7950 sys_image_guid 1c34:da03:0007:7953 > > > 1: ibp9s0f0: node_type ca fw 2.42.5000 node_guid 1c34:da03:0007:7a60 sys_image_guid 1c34:da03:0007:7a63 > > > > > > [leonro@c-235-8-1-005 ~]$ uname -a > > > Linux c-235-8-1-005 5.14.16-201.fc34.x86_64 #1 SMP Wed Nov 3 13:57:29 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux > > > [leonro@c-235-8-1-005 ~]$ rdma dev > > > 0: ibp8s0f0: node_type ca fw 2.42.5000 node_guid 1c34:da03:0007:7950 sys_image_guid 1c34:da03:0007:7953 > > > 1: ibp9s0f0: node_type ca fw 2.42.5000 node_guid 1c34:da03:0007:7a60 sys_image_guid 1c34:da03:0007:7a63 > > > [leonro@c-235-8-1-005 ~]$ lspci |grep nox > > > 08:00.0 Network controller: Mellanox Technologies MT27520 Family [ConnectX-3 Pro] > > > 09:00.0 Network controller: Mellanox Technologies MT27520 Family [ConnectX-3 Pro] > > > > > > Thanks > > > > > Hi, > > > > I tried different host with CX-3/CX-5, they all work fine. and I can > > only reproduce on hosts with a bit old HCA: > > 03:00.0 InfiniBand: Mellanox Technologies MT26428 [ConnectX VPI PCIe > > 2.0 5GT/s - IB QDR / 10GigE] (rev b0) > > > > The bug report link > > https://bugzilla.redhat.com/show_bug.cgi?id=2014094, mentioned HCA > > ConnectX too. > > > > 01:00.0 InfiniBand [0c06]: Mellanox Technologies MT25408A0-FCC-GI > > ConnectX, Dual Port 20Gb/s InfiniBand / 10GigE Adapter IC with PCIe > > 2.0 x8 5.0GT/s In... (rev b0) > > with the instrument, I only narrow it down to > > 1438 port = setup_port(coredev, port_num, &attr); > > 1439 if (IS_ERR(port)) { > > 1440 ret = PTR_ERR(port); > > 1441 pr_info("setup ports failed %d\n", ret); > > 1442 goto err_put; > > 1443 } > > Keep going with the tracing, there are lots of allocations in there. > > > My guess is the ConnectX HCA may be missing some features, which leads > > to ENOMEM, I will continue the instrument if no other hint. > > Since there is no memory allocation failure splat I'm guessing some > memory allocation hit an overflow and silently failed - ie mlx4 is > possibily setting some value to something bogus Yes, look for the values returned from FW. > > Jason