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 X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C98F9C43603 for ; Mon, 9 Dec 2019 20:31:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A167D2068E for ; Mon, 9 Dec 2019 20:31:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726631AbfLIUby (ORCPT ); Mon, 9 Dec 2019 15:31:54 -0500 Received: from mga14.intel.com ([192.55.52.115]:54463 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726509AbfLIUby (ORCPT ); Mon, 9 Dec 2019 15:31:54 -0500 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Dec 2019 12:25:58 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,296,1571727600"; d="scan'208";a="215208124" Received: from nshalmon-mobl.ger.corp.intel.com (HELO localhost) ([10.252.8.146]) by orsmga006.jf.intel.com with ESMTP; 09 Dec 2019 12:25:54 -0800 Date: Mon, 9 Dec 2019 22:25:52 +0200 From: Jarkko Sakkinen To: Will Deacon Cc: Jeffrin Jose , peterz@infradead.org, mingo@redhat.com, linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org, peterhuewe@gmx.de, jgg@ziepe.ca Subject: Re: [PROBLEM]: WARNING: lock held when returning to user space! (5.4.1 #16 Tainted: G ) Message-ID: <20191209202552.GK19243@linux.intel.com> References: <20191207173420.GA5280@debian> <20191209103432.GC3306@willie-the-truck> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191209103432.GC3306@willie-the-truck> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org On Mon, Dec 09, 2019 at 10:34:32AM +0000, Will Deacon wrote: > Hi, > > [expanding cc list] > > On Sat, Dec 07, 2019 at 11:04:20PM +0530, Jeffrin Jose wrote: > > i got the following output related from typical dmesg output from 5.4.1 kernel > > Was this during boot or during some other operation? > > > ================================================ > > WARNING: lock held when returning to user space! > > 5.4.1 #16 Tainted: G E > > ------------------------------------------------ > > tpm2-abrmd/691 is leaving the kernel with locks still held! > > 2 locks held by tpm2-abrmd/691: > > #0: ffff8881ee784ba8 (&chip->ops_sem){.+.+}, at: tpm_try_get_ops+0x2b/0xc0 [tpm] > > #1: ffff8881ee784d88 (&chip->tpm_mutex){+.+.}, at: tpm_try_get_ops+0x57/0xc0 [tpm] > > Can you reproduce this failure on v5.5-rc1? Does this appear after variable amount of time or detemitically always at certain point of time (e.g. when the daemon starts or perhaps always when doing a certain operations with TSS)? Do we have possibility to get the user code path that gets executed when this happens? /Jarkko