From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (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 9596C13C3D2 for ; Thu, 4 Apr 2024 22:05:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712268337; cv=none; b=KQyV1PvkAmJIFUrmJH/DYe0hfNJuBQbPY2ohn1OV6PYzaZeRiKic1ptuAh9c+XdSp8ep+htI8snOPmxcQ1Yk/ibTe7YG7DoKYUIt4itHyYKrs2krgyuah0K93Dtk+izfCeBZDVWgQZLKXI127DVW4hks4nCUKqLy5c6t0V6UbuM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712268337; c=relaxed/simple; bh=Uao7gbUbelyGa8S9RMcw0JQSbxoZPY++pri7MyCJu7g=; h=Date:From:To:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=Q+ERlU5afE50oekjLuPFxdGH+7oIjml+mbHryzrGCcbX8EJ/K0yK8pWxJv4eJx4AibvZSXlawdR021VQc05xZBDJ0l1zNyJO7bwotfYUNSsYtl99/HITC3LpU0MDUPxTQnk7sQrqLaVIcLUC/Trar+3culGA2SXBOBG79taTt+Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Ic5V3XIC; arc=none smtp.client-ip=192.198.163.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Ic5V3XIC" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1712268336; x=1743804336; h=date:from:to:subject:message-id:mime-version; bh=Uao7gbUbelyGa8S9RMcw0JQSbxoZPY++pri7MyCJu7g=; b=Ic5V3XICUY1pcL1+s2O5hIwtI9BCp4nvPRk0IejkxfrJbl4DONbnDkdr 5iSIF1Z5OkxJNV7NG5Mm03v8Z975eCFe2TE9o+7TW0BTrnVQHsCDM9B2E BbnTY9OUc1qwKEIwqOLg9z8jdkCHkqqrt2pORS61rfLqDmbJKWLa4b6cC mBRh4GGtP+fdFDJPD5su7N3fqzET7zm4JDI5RVDfB6A/dI3ZLCAU8pINY ug9PjvvyguT/kvY0KdIvdKxBaIZg1GJME7gQf7dy9758eY3FAYh7EpvQD IJb2pNbAxqqkEZTaAizeTbb+HVcrbQNWrF3Nt6tJq7uR6X5lArJPSbVlY Q==; X-CSE-ConnectionGUID: VOSb6C1kT4C13q8df9LTjA== X-CSE-MsgGUID: xp8I/BTOTKqwn3x3gX5TJw== X-IronPort-AV: E=McAfee;i="6600,9927,11034"; a="7447817" X-IronPort-AV: E=Sophos;i="6.07,180,1708416000"; d="scan'208";a="7447817" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Apr 2024 15:05:35 -0700 X-CSE-ConnectionGUID: x+OpkRLUQTez6KbWLJF5pA== X-CSE-MsgGUID: J/801aP4Tq6P8GnZL+h08Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,180,1708416000"; d="scan'208";a="23593501" Received: from agluck-desk3.sc.intel.com (HELO agluck-desk3) ([172.25.222.105]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Apr 2024 15:05:35 -0700 Date: Thu, 4 Apr 2024 15:05:33 -0700 From: Tony Luck To: Borislav Petkov , Yazen Ghannam , Miaohe Lin , Naoya Horiguchi , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Machine check recovery broken in v6.9-rc1 Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline v6.8 works. v6.9-rc1 fails with: kernel BUG at include/linux/swapops.h:119 117 static inline unsigned long swp_offset_pfn(swp_entry_t entry) 118 { 119 VM_BUG_ON(!is_pfn_swap_entry(entry)); 120 return swp_offset(entry) & SWP_PFN_MASK; 121 } I've messed up the bisection three times now and ended up pointing at some innocent looking commit. So I wonder if anyone else has noticed and tried debugging. -Tony