From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752359AbdFPVlT (ORCPT ); Fri, 16 Jun 2017 17:41:19 -0400 Received: from salamandra.streefland.net ([83.162.229.199]:54148 "EHLO salamandra.streefland.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751798AbdFPVlS (ORCPT ); Fri, 16 Jun 2017 17:41:18 -0400 Date: Fri, 16 Jun 2017 23:41:16 +0200 From: Dick Streefland To: "Eric W. Biederman" Cc: linux-kernel@vger.kernel.org Subject: Re: autofs multi-map regression Message-ID: <20170616214115.GA8693@streefland.net> References: <20170616101440.GA1480@neos> <87r2yjr6p5.fsf@xmission.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87r2yjr6p5.fsf@xmission.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Friday 2017-06-16 15:57, Eric W. Biederman wrote: | I don't believe this is a kernel change. | | I dug up an old VM and I was able to reproduce this issue simply | by installing autofs, and your auto.master and auto.net files. | | # uname -a | Linux ubuntu-16 4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:27:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux | | # ls /net/ | localhost | # ls /net/localhost/loc | ls: cannot open directory '/net/localhost/loc': Too many levels of symbolic links | # ls /loc | ls: cannot open directory '/loc/': Too many levels of symbolic links | | I suspect there is configuration somewhere in your autofs | configuration. I don't speak autofs well enough to debug the issue at | this point. But I can conclusively say it was not the kernel commit you | pointed at, as I see the issue you are reporting and I don't have that | commit in the kernel under test. I have a second partition mounted on /loc, that is the reason for the multi-map autofs setup. With a separate mount on /loc, you won't see the errors with the old kernel. Fact is that my setup worked for a long time, and that it stopped working after the backport of commit 1064f874 to the ubuntu 4.4 kernel. -- Dick