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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 3939FC3A5A3 for ; Thu, 22 Aug 2019 19:21:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 098A3233FD for ; Thu, 22 Aug 2019 19:21:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566501712; bh=Np2YaXFXxdZBVJ/hOPqIyUSMETJCZBthpNL2w89JMWY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=VhFfyI10LPifamfCvHkJ7BDUrS0RxHnwMW+TfbWmWYTpBW0WewBNs6A4rMmKJ60Qo F0rVqGnNYMUyCwvgDqlOG/cX+LIHLxCsyZ5DZrB+PhIRd4d2ivThSkajX3xI1W077Z T19znL3ZzhirZFu1Ww3HeP2/lYC+EMuMrUE8q9uc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404107AbfHVTVu (ORCPT ); Thu, 22 Aug 2019 15:21:50 -0400 Received: from mail.kernel.org ([198.145.29.99]:37294 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404082AbfHVTVr (ORCPT ); Thu, 22 Aug 2019 15:21:47 -0400 Received: from localhost (unknown [69.71.4.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 181252339F; Thu, 22 Aug 2019 19:21:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566501706; bh=Np2YaXFXxdZBVJ/hOPqIyUSMETJCZBthpNL2w89JMWY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=1F7BZBxHeCFog1GAX51UuT3BSNzZLPdITl8OUGr4YtFjPfvXe5D8A8vrv8IW2QUXQ yfZYt6F8ONtacAssm5LcbkffFhy8BABQRWjYLTbPa7nXr2NmKWlbySh50K86Cr6/ug c6/fO2V6RfBURrov/0o9B2/rv2iGtbaMxpyOKwOg= Date: Thu, 22 Aug 2019 14:21:43 -0500 From: Bjorn Helgaas To: Fawad Lateef Cc: "Schmid, Carsten" , "linux-pci@vger.kernel.org" , "linux-usb@vger.kernel.org" , Richard Zhu , Lucas Stach , Shawn Guo , Sascha Hauer Subject: Re: Unhandled fault: imprecise external abort (0x1406) when loading xhci_pci.ko - uPD720202, PEX8605, iMX6Q and linux-4.19.25 Message-ID: <20190822192143.GK14450@google.com> References: <20190801171725.GD151852@google.com> <743ef7fab5144df69bfc8673fff7f0f7@SVR-IES-MBX-03.mgc.mentorg.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Thu, Aug 22, 2019 at 11:18:44AM +0200, Fawad Lateef wrote: > In all crash cases (when loading/unloading the driver); system stays > response, so I can look into any possible device status using PCIe > registers of PEX8605 switch or iMX6 PCIe root hub. Please suggest if > something I can check to better understand the issue. You could collect the output of "sudo lspci -vvxxx" and see if the switch or root port logged any errors. Collect it before and after the crash and compare the two. Bjorn