From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752356AbbATVnt (ORCPT ); Tue, 20 Jan 2015 16:43:49 -0500 Received: from bh-25.webhostbox.net ([208.91.199.152]:52000 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750822AbbATVns (ORCPT ); Tue, 20 Jan 2015 16:43:48 -0500 Date: Tue, 20 Jan 2015 13:43:07 -0800 From: Guenter Roeck To: Al Viro Cc: Sabrina Dubroca , Paul Moore , Stephen Rothwell , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-audit@redhat.com, Richard Guy Briggs Subject: Re: linux-next: Tree for Jan 20 -- Kernel panic - Unable to mount root fs Message-ID: <20150120214307.GA9394@roeck-us.net> References: <20150120185308.53f4af4e@canb.auug.org.au> <20150120165655.GA10904@kria> <4237741.ePaG0Gba6D@sifl> <20150120175135.GA25973@kria> <20150120195432.GH29656@ZenIV.linux.org.uk> <20150120204504.GA309@kria> <20150120210202.GI29656@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150120210202.GI29656@ZenIV.linux.org.uk> User-Agent: Mutt/1.5.23 (2014-03-12) X-Authenticated_sender: guenter@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-CTCH-PVer: 0000001 X-CTCH-Spam: Unknown X-CTCH-VOD: Unknown X-CTCH-Flags: 0 X-CTCH-RefID: str=0001.0A020202.54BECC13.01A5,ss=1,re=0.001,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 X-CTCH-Score: 0.001 X-CTCH-ScoreCust: 0.000 X-CTCH-Rules: C_4847, X-CTCH-SenderID: linux@roeck-us.net X-CTCH-SenderID-Flags: 0 X-CTCH-SenderID-TotalMessages: 6 X-CTCH-SenderID-TotalSpam: 0 X-CTCH-SenderID-TotalSuspected: 0 X-CTCH-SenderID-TotalConfirmed: 0 X-CTCH-SenderID-TotalBulk: 0 X-CTCH-SenderID-TotalVirus: 0 X-CTCH-SenderID-TotalRecipients: 0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: mailgid no entry from get_relayhosts_entry X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 20, 2015 at 09:02:03PM +0000, Al Viro wrote: > On Tue, Jan 20, 2015 at 09:45:04PM +0100, Sabrina Dubroca wrote: > > > printk(KERN_ERR "fn_lookup %s %d\n", name, retval); > > > > and I get: > > > > [ 1.618558] fn_lookup bsg/0:0:0:0 -2 > > [ 1.619437] fn_lookup bsg 0 > > [ 1.620236] fn_lookup bsg/0:0:0:0 -2 > > [ 1.625996] fn_lookup sda 0 > > [ 1.626609] fn_lookup sda 0 > > [ 1.639007] fn_lookup sda1 0 > > [ 1.639691] fn_lookup sda1 0 > > [ 1.643656] fn_lookup bsg/1:0:0:0 -2 > > [ 1.644974] fn_lookup bsg 0 > > [ 1.645928] fn_lookup bsg/1:0:0:0 -2 > > [ 1.649483] fn_lookup /dev/ram -2 > > [ 1.650424] fn_lookup /dev/root -2 > > [ 1.651234] VFS: Cannot open root device "sda1" or unknown-block(8,1): error -2 > > That -2 is -ENOENT... Wait a sec, what's in filename, filename->name and > what do you get from your printk on kernel with that commit reverted? On microblaze target: patch reverted: name . rv 0 name usr rv 0 name usr/lib rv 0 name usr/share rv 0 name usr/share/udhcpc rv 0 name usr/bin rv 0 name usr/bin/logger rv 0 ... broken: filename c78a4000 filename->name c78a4014:. name . rv 0 filename c78a4000 filename->name c78a4014:usr name usr rv 0 filename c78a4000 filename->name c78a4014:usr/lib name usr/lib rv -2 filename c78a4000 filename->name c78a4014:usr/share name usr/share rv -2 filename c78a4000 filename->name c78a4014:usr/share/udhcpc name usr/share/udhcpc rv -2 filename c78a4000 filename->name c78a4014:usr/bin name usr/bin rv -2 filename c78ae000 filename->name c78ae014:usr/bin/logger name usr/bin/logger rv -2 ... Guenter