From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 E4BC034B18E; Fri, 6 Mar 2026 09:57:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772791040; cv=none; b=qBYyQa+Gh+5o+W/b0LietsEhM/WYTqqgltB6mkjwX1rmhZrlBLwBLgypA3jZzOOn4flwR6/XhB3uHpKWjYSfuScy7jjcRa3zlH28tdbsB3SriCn3wYKj7ox8PsrMis/bz8xKtwR9J+aP+Pid+F0OBx1YkvGSeQOXftUYpVm3KlY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772791040; c=relaxed/simple; bh=pkUmUb2g7nlB5B4CBhLHrn/LJcujtm0BE3qbKB1dNzw=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=OVyUpg2f2Lx7jZC4mUmg5E7kGZ4ubUHc0nXnJ/vmBjYZ5cY8OF/E0XozYBOCgItNvnW8LjLoVR1OQbhE1ySGiRJxUKGPzLIQT0ugAnF/uTeG9rFxxKLLpkeKq+5p1XdTvdRDjVhUahP3IY+ytkaJvuGm3qlioX7GJDlzCe+bLUU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sKS/oUlo; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="sKS/oUlo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CA38CC19422; Fri, 6 Mar 2026 09:57:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772791039; bh=pkUmUb2g7nlB5B4CBhLHrn/LJcujtm0BE3qbKB1dNzw=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=sKS/oUlo15AAxdnctAxUwY2A1P2GQWdJK4gC1hid5Z0qldhSQiA/r9UWPt9d+eFMl 5eFbKs0mKAYurXL1agu9sz6qDzBJ0i4Jcr+JNoieCv7QjaN+93GVXyF8cSGIVRm+zQ EBtSLT06ZjEPHbaRfYyFNaDQOzjoLX2Cwu6cVoi0SFlmoDABpyw/bw0lXXSbnR0sgZ zkmCq2VjSAVQ+2E+SVWJve839VfqrNBJombhWZWtCjIyC7jxWpgZL6+c0ZRNvG2OLn nyL+hpCk1272FRNnhcH689uJ0P3VZqG+DCCRj5vwH0qRJunhCx1nevyBm42cuSGtCB a6e49CQbKv9Yw== From: Thomas Gleixner To: Jiri Slaby , Peter Zijlstra Cc: Matthieu Baerts , Stefan Hajnoczi , Stefano Garzarella , kvm@vger.kernel.org, virtualization@lists.linux.dev, Netdev , rcu@vger.kernel.org, MPTCP Linux , Linux Kernel , Shinichiro Kawasaki , "Paul E. McKenney" , Dave Hansen , "luto@kernel.org" , Michal =?utf-8?Q?Koutn=C3=BD?= , Waiman Long Subject: Re: Stalls when starting a VSOCK listening socket: soft lockups, RCU stalls, timeout In-Reply-To: <7efde2b5-3b72-4858-9db0-22493d446301@kernel.org> References: <7f3e74d7-67dc-48d7-99d2-0b87f671651b@kernel.org> <863a5291-a636-47d0-891c-bb0524d2e134@kernel.org> <20260302114636.GL606826@noisy.programming.kicks-ass.net> <717310d8-6274-4b7f-8a19-561c45f5f565@kernel.org> <87zf4m2qvo.ffs@tglx> <47cba228-bba7-4e58-a69d-ea41f8de6602@kernel.org> <87tsuu2i59.ffs@tglx> <7efde2b5-3b72-4858-9db0-22493d446301@kernel.org> Date: Fri, 06 Mar 2026 10:57:15 +0100 Message-ID: <87qzpx2sck.ffs@tglx> Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Fri, Mar 06 2026 at 06:48, Jiri Slaby wrote: > On 05. 03. 26, 20:25, Thomas Gleixner wrote: >> Is there simple way to reproduce? > > Unfortunately not at all. To date, I even cannot reproduce locally, it > reproduces exclusively in opensuse build service (and github CI as per > Matthieu's report). I have a project in there with packages which fail > more often than others: > https://build.opensuse.org/project/monitor/home:jirislaby:softlockup > But it's all green ATM. > > Builds of Go 1.24 and tests of rust 1.90 fail the most. The former even > takes only ~ 8 minutes, so it's not that intensive build at all. So the > reasons are unknown to me. At least, Go apparently uses threads for > building (unlike gcc/clang with forks/processes). Dunno about rust. I tried with tons of test cases which stress test mmcid with threads and failed. Can you provide me your .config, source version, VM setup (Number of CPUs, memory etc.)? I tried to find it on that github page Matthiue mentioned but I'm probably too stupid to navigate this clicky interface. Thanks tglx