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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37734C433FE for ; Fri, 21 Oct 2022 09:54:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229456AbiJUJyR (ORCPT ); Fri, 21 Oct 2022 05:54:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55904 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230488AbiJUJyF (ORCPT ); Fri, 21 Oct 2022 05:54:05 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 652112582E9 for ; Fri, 21 Oct 2022 02:54:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=R8aE+fUxsekh1JIzAY8ZsHZpAn2ZOjI/KXf7Nvom+7c=; b=gkYmsgDCCJygDYM8W8VySaUn7s xP3aFyNNAjNMxtS/KAF0p2XZgEQ5Jd0mmq18Qp1jomav9gPu+atfCuUMkMDfaa+rbK6pJqbXWZzXk xaAMR5wmSMfdudbCAVZY9qzim3QXd6RzUVyzQQ0oFD/ciUN37AepShZbQboxpL/3W+wSktKqh5br2 m1S4fhR+Ukekn2Zjkmc3oqxqbL0+G6uCyxQH/eKuwXqje/Y/+CjjSCFPGvoMQN0P47rr4ousho/Mo mDkfYS93P7b3gDd4/dE2GCXejqvxIbDC9QMOaSWUyv8OjfsoRxVt24EUxp/AkAZvebPUAQ/bmwuz4 /pVF/13g==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1oloiJ-00D30Q-M1; Fri, 21 Oct 2022 09:53:15 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 59907300110; Fri, 21 Oct 2022 11:53:09 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 327682099A9E9; Fri, 21 Oct 2022 11:53:09 +0200 (CEST) Date: Fri, 21 Oct 2022 11:53:09 +0200 From: Peter Zijlstra To: Nathan Chancellor Cc: Thomas Gleixner , linux-kernel@vger.kernel.org, x86@kernel.org, Linus Torvalds , Tim Chen , Josh Poimboeuf , Andrew Cooper , Pawan Gupta , Johannes Wikner , Alyssa Milburn , Jann Horn , "H.J. Lu" , Joao Moreira , Joseph Nuzman , Steven Rostedt , Juergen Gross , Masami Hiramatsu , Alexei Starovoitov , Daniel Borkmann , K Prateek Nayak , Eric Dumazet Subject: Re: [PATCH v3 48/59] x86/retbleed: Add SKL return thunk Message-ID: References: <20220915111039.092790446@infradead.org> <20220915111147.890071690@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 20, 2022 at 04:10:28PM -0700, Nathan Chancellor wrote: > This commit is now in -next as commit 5d8213864ade ("x86/retbleed: Add > SKL return thunk"). I just bisected an immediate reboot on my AMD test > system when starting a virtual machine with QEMU + KVM to it (see the > bisect log below). My Intel test systems do not show this. > Unfortunately, I do not have much more information, as there are no logs > in journalctl, which makes sense as the reboot occurs immediately after > I hit the enter key for the QEMU command. > > If there is any further information I can provide or patches I can test > for further debugging, I am more than happy to do so. Moo :-( you happen to have a .config for me?