From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 538E8906F9 for ; Fri, 2 Sep 2022 09:47:51 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 424012D12A for ; Fri, 2 Sep 2022 09:47:51 +0200 (CEST) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [94.136.29.106]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS for ; Fri, 2 Sep 2022 09:47:50 +0200 (CEST) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 3402F43516; Fri, 2 Sep 2022 09:47:50 +0200 (CEST) Message-ID: <13967647-13df-0567-0870-3cd7aa461fa6@proxmox.com> Date: Fri, 2 Sep 2022 09:47:45 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.13.0 Content-Language: en-US To: Eneko Lacunza , pve-devel@lists.proxmox.com References: <20220831132803.5596-1-f.ebner@proxmox.com> <26cef061-6d28-1d8b-b7a7-5810054ff023@proxmox.com> From: Fiona Ebner In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.046 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment NICE_REPLY_A -0.001 Looks like a legit reply (A) SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record T_SCC_BODY_TEXT_LINE -0.01 - Subject: Re: [pve-devel] [RFC kernel] revert problematic TSC multiplier commit X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Sep 2022 07:47:51 -0000 Hi, Am 02.09.22 um 09:22 schrieb Eneko Lacunza: > Hi Fiona, > > Does this patch correspond to kernels linked in this forum thread? > > https://forum.proxmox.com/threads/proxmox-7-2-3-ceph-16-2-7-migrating-vms-hangs-them-kernel-panic-on-linux-freeze-on-windows.109645/page-2#post-488479 > No, there is no public build with the below patch yet. Did you already test the kernel with the fpu patches that's mentioned in that forum post? > > If so I can test them and see if that helps with bugzilla entry #4073: > https://bugzilla.proxmox.com/show_bug.cgi?id=4073 > I don't think theses issues are related, as there, the VM that's been migrated hangs, and here other VMs on the node were affected. > Thanks > > El 1/9/22 a las 8:25, Fiona Ebner escribió: >> Am 31.08.22 um 15:28 schrieb Fiona Ebner: >>> which might be responsible for several issues reported in the >>> community forum[0][1]. >>> >>> In my case, loading a VM snapshot that originally was taken on >>> a CPU from a different vendor often caused problems in other VMs(!). >>> In particular, it often led to RCU stalls (with similar messages as in >>> [1]) or slowdowns, and sometimes clock jumps far into the future (like >>> in [0]). With this revert applied, everything seems to run smoothly >>> even after loading the "bad" snapshot 10 times. >>> >>> [0]https://forum.proxmox.com/threads/112756/ >>> [1]https://forum.proxmox.com/threads/111494/ The fix 11d39e8cc43e1c6737af19ca9372e590061b5ad2 is only for AMD/SVM, so most likely [1], where people with Intel N5105 are affected, is not related either. RCU stall messages can happen for different reasons of course ;)