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_MUTT autolearn=ham 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 F221AC48BD5 for ; Tue, 25 Jun 2019 17:16:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CD0B6208CA for ; Tue, 25 Jun 2019 17:16:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561483001; bh=efAZOIBCMDXaF/32mIQRuAHKfBu2BquoJ12alRwlJwc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=PFzkMH1NZs86BXQAzCts0PUhrNOS6851OK0kZpfcnYrvAidZixqEF/LOkjG8kI3o+ BLEHW45EpxAAdkrV70fnFS/Yqq8OnWDf5udP+L/m8myc+CbJlS//vJlWmCdG+FCqJI PukMUe+snbzJRa62we8F+0MjqZupXNuj+/TW0fa4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731269AbfFYRQl (ORCPT ); Tue, 25 Jun 2019 13:16:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:41098 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730165AbfFYRQl (ORCPT ); Tue, 25 Jun 2019 13:16:41 -0400 Received: from localhost (c-67-161-149-27.hsd1.co.comcast.net [67.161.149.27]) (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 174FE20883; Tue, 25 Jun 2019 17:16:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561483000; bh=efAZOIBCMDXaF/32mIQRuAHKfBu2BquoJ12alRwlJwc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=IolAeE+BylPP79XIp3wNQ9krprH9IlO+F1X08MevU9/8lIqlpyS+uxqLpoFLlx2pD a4Y2963fASY3Qgi7u3Ga6bIcxyfhH94dgHZxEcVT9BPXN+/RqnvCCR2mqTC0sVCtUF FamcdySENKzwBrV6LWfJnUPkhy22ez4FaTnv+8eI= Date: Tue, 25 Jun 2019 12:16:39 -0500 From: Bjorn Helgaas To: "Fangjian (Turing)" Cc: linux-pci@vger.kernel.org, "Rafael J. Wysocki" Subject: Re: Bug report: AER driver deadlock Message-ID: <20190625171639.GA103694@google.com> References: 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-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Tue, Jun 04, 2019 at 11:25:44AM +0800, Fangjian (Turing) wrote: > Hi, We met a deadlock triggered by a NONFATAL AER event during a sysfs > "sriov_numvfs" operation. Any suggestion to fix such deadlock ? Here's a bugzilla report for this; please reference it and this email thread in any patches to fix it: https://bugzilla.kernel.org/show_bug.cgi?id=203981