From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on gnuweeb.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_PASS,SPF_SOFTFAIL, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3FF49C433F5 for ; Wed, 16 Mar 2022 19:03:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357353AbiCPTEa (ORCPT ); Wed, 16 Mar 2022 15:04:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42942 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242117AbiCPTE0 (ORCPT ); Wed, 16 Mar 2022 15:04:26 -0400 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C15A1A398 for ; Wed, 16 Mar 2022 12:03:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1647457391; x=1678993391; h=message-id:date:mime-version:to:references:from:subject: in-reply-to:content-transfer-encoding; bh=uiI1BdGIvJQqFFC4nmqbwOsYrAoCLeSI1o2aaUGmriU=; b=THV2EdilG1hfbAAAAR+ATODepp+uP+zxZSxzYvfjI0rM/dFxgI91LhNu Q7H33GavRrowjYNEddOPmKyS66sgP90B/9R284vbj8iI6jvI6nepQfl/J cSoE3liSSZT+0lfUUF99bVeKg1z0wwtGE3APXNMMFUYiLk+9UIAaL+qaM rZeddYnBbXfb5zcePe5jiyvr3HDXyKBde7O6H0rBXjpE2U/tGdvvP2eYR 62xnSUb06vOKsm42o3+s3Ebq2wZay35eaomanghDDXRKktcImKFH9X57b OWUTCbjzt2a1YaBjKwK0VrgmnLprXGBuJZCBgBt2qkxep/SVust/FSr2B g==; X-IronPort-AV: E=McAfee;i="6200,9189,10288"; a="256417068" X-IronPort-AV: E=Sophos;i="5.90,187,1643702400"; d="scan'208";a="256417068" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Mar 2022 12:03:08 -0700 X-IronPort-AV: E=Sophos;i="5.90,187,1643702400"; d="scan'208";a="613751794" Received: from jdwaldem-mobl.amr.corp.intel.com (HELO [10.255.228.230]) ([10.255.228.230]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Mar 2022 12:03:07 -0700 Message-ID: Date: Wed, 16 Mar 2022 12:02:59 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Content-Language: en-US To: Borislav Petkov , linux-kernel@vger.kernel.org, Thomas Gleixner , Ingo Molnar , Dave Hansen , x86@kernel.org, Peter Zijlstra References: From: Dave Hansen Subject: Re: system locks up with CONFIG_SLS=Y; 5.17.0-rc In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/16/22 11:45, Jamie Heilman wrote: > int3: 0000 [#1] PREEMPT SMP PTI > CPU: 0 PID: 2435 Comm: qemu-system-x86 Not tainted 5.17.0-rc8-sls #1 > Hardware name: Dell Inc. Precision WorkStation T3400 /0TP412, BIOS A14 04/30/2012 > RIP: 0010:setc+0x5/0x8 [kvm] > Code: 00 00 0f 1f 00 0f b6 05 43 24 06 00 c3 cc 0f 1f 80 00 00 00 00 0f 90 c0 c3 cc 0f 1f 00 0f 91 c0 c3 cc 0f 1f 00 0f 92 c0 c3 cc <0f> 1f 00 0f 93 c0 c3 cc 0f 1f 00 0f 94 c0 c3 cc 0f 1f 00 0f 95 c0 > RSP: 0018:ffffc90000a1fc68 EFLAGS: 00000283 > RAX: 0000000000000281 RBX: 0000000000000006 RCX: 0000000000000005 > RDX: ffffffffa01a4024 RSI: 0000000000000000 RDI: 0000000000000000 > RBP: ffff88810ef76900 R08: 0000000000000000 R09: 0000000000000000 > R10: ffff88810ee54000 R11: 0000000000000000 R12: ffffffffa01d5720 > R13: 0000000000000000 R14: 0000000000000000 R15: ffff88810ef76900 > FS: 00007f23ecd79640(0000) GS:ffff888233c00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000000 CR3: 0000000108df8000 CR4: 00000000000426f0 > Call Trace: > > ? x86_emulate_insn+0x76b/0xe00 [kvm] Ooh, fun! This hit one of the new int3's in "ASM_RET" in "setc" in arch/x86/kvm/emulate.c: FOP_SETCC(setc) Did the extra 'int3' screw up some presumed jump offset or something?