From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759672AbeD1I3L (ORCPT ); Sat, 28 Apr 2018 04:29:11 -0400 Received: from mail-wm0-f54.google.com ([74.125.82.54]:34167 "EHLO mail-wm0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759588AbeD1I3I (ORCPT ); Sat, 28 Apr 2018 04:29:08 -0400 X-Google-Smtp-Source: AB8JxZqL83v/A25oLhMb/Sw+vZTOwY6+ORiwDUTrnKw0cpGvtKXoraOGSJyew7bXfPMayLkTU9u3Fw== Date: Sat, 28 Apr 2018 10:29:04 +0200 From: Ingo Molnar To: Dave Hansen Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxram@us.ibm.com, tglx@linutronix.de, dave.hansen@intel.com, mpe@ellerman.id.au, akpm@linux-foundation.org, shuah@kernel.org, shakeelb@google.com Subject: Re: [PATCH 0/9] [v3] x86, pkeys: two protection keys bug fixes Message-ID: <20180428082904.ekzsbqx3ohqxygbg@gmail.com> References: <20180427174527.0031016C@viggo.jf.intel.com> <20180428070553.yjlt22sb6ntcaqnc@gmail.com> <20180428071538.3whanph7r6v56h2a@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180428071538.3whanph7r6v56h2a@gmail.com> User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Ingo Molnar wrote: > The hang problem is still there, if I run a script like this: > > while :; do date; echo -n "32-bit: "; ./protection_keys_32 >/dev/null; date; echo -n "64-bit: "; ./protection_keys_64 >/dev/null; done > > then within a minute one of the testcases hangs reliably. > > Out of 4 attempts so far one hang was in the 32-bit testcase, 3 hangs were in the > 64-bit testcase - so 64-bit appears to trigger it more frequently. Note that even with all fixes in this series applied the self-test hang still triggers. Thanks, Ingo