Received: by 2002:a25:ab43:0:0:0:0:0 with SMTP id u61csp921574ybi; Wed, 19 Jun 2019 10:07:08 -0700 (PDT) X-Google-Smtp-Source: APXvYqyNpS/Qw04kQo0zQeSqKCELPCiPIFPxCPkn4pOYoy53KHBeaA6DS4TdJwbKiEb7NI3v4ekr X-Received: by 2002:a17:90a:2641:: with SMTP id l59mr11498761pje.55.1560964028060; Wed, 19 Jun 2019 10:07:08 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1560964028; cv=none; d=google.com; s=arc-20160816; b=hYqElK+aklVwlKY1VJslatvQSLbLjs00y5s5f5TBruXQM3fu0ehXqwe2Itz2HxcPbO gQwAp88ZAuhD2NAXWgKcTbe9gUey6oAGTEFxxCo5P1/BR6TVBiUNRD3gpQtrmFf4scl8 LawhiJBIefwp2cRtIG0VRSgRpZe3upytW2NyHGD8ANGJfBz2BT5xr9iwbV0H/OK1NwdN xVhqf2sUrcA/fUEuChi+BG89UfJ0LVYpcvNEbBkHtvzHL8u8k5C3IObWQjPBq40Vebe8 yW9dtHZdxmCtUtLQFobld9YDwS9vR/j3zjOa1y1xTOi/eb6yR0NUfeayN5mjb7wlD7y6 fVDg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=d1LF9fUIWUfWx0jC6vO5DQC56PcIp1ek3Pfui9Mpaa0=; b=TDv3tgb4bF+9WL8okxeQpeGQzAZIWYCIOimBg/bWOWj+28nFRCP7xuPLuYvFIcUhSl FbhX5mmc1xL/Q+DlMRlXoh0MXAipX/+DR84DVFZ91gf8yQyah7EQ44e50Txz6arT4kHt ajiRYxDhHSGqFk6X3ndOFGpzPX+5SFe2K+/K83jGZ6ruSKuBvdzw8guGSRhAW5zmqmPN HnxYoqdNBzX/zYur7xaJjUPv1Xe3GSFWSCJvlwhBh886UNtP8dsvxhpxD0VVLX19Don1 1jtr/QZgk5jnJ9lrpkaRSCcYJxhFqwi44FkDzHQpt0xkADEd/awsOQjbkqgFVZQIxnhO Bzxw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id d62si3507022pga.447.2019.06.19.10.06.52; Wed, 19 Jun 2019 10:07:08 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729973AbfFSRGW (ORCPT + 99 others); Wed, 19 Jun 2019 13:06:22 -0400 Received: from foss.arm.com ([217.140.110.172]:49242 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726109AbfFSRGV (ORCPT ); Wed, 19 Jun 2019 13:06:21 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 20F1D344; Wed, 19 Jun 2019 10:06:21 -0700 (PDT) Received: from fuggles.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 5390A3F246; Wed, 19 Jun 2019 10:06:20 -0700 (PDT) Date: Wed, 19 Jun 2019 18:06:18 +0100 From: Will Deacon To: Vicente Bergas Cc: Al Viro , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Catalin Marinas Subject: Re: d_lookup: Unable to handle kernel paging request Message-ID: <20190619170618.GJ7767@fuggles.cambridge.arm.com> References: <23950bcb-81b0-4e07-8dc8-8740eb53d7fd@gmail.com> <20190522135331.GM17978@ZenIV.linux.org.uk> <20190522162945.GN17978@ZenIV.linux.org.uk> <10192e43-c21d-44e4-915d-bf77a50c22c4@gmail.com> <20190618183548.GB17978@ZenIV.linux.org.uk> <20190619162802.GF17978@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.1+86 (6f28e57d73f2) () Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 19, 2019 at 06:51:51PM +0200, Vicente Bergas wrote: > here it is: > https://paste.debian.net/1088517 No modules and OPTIMIZE_INLINING=n, so this isn't either of my first thoughts. Hmm. I guess I should try to reproduce the issue locally. Will