linux-kernel - Re: Kubuntu's udev broken with 2.6.18-rc2-mm1

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Message-Id: <200607272128.k6RLSJMW027138@turing-police.cc.vt.edu>
Date:	Thu, 27 Jul 2006 17:28:19 -0400
From:	Valdis.Kletnieks@...edu
To:	Andrew Morton <akpm@...l.org>
Cc:	ajwade@...001346162bf9-cm0011ae8cd564.cpe.net.cable.rogers.com,
	andrew.j.wade@...il.com, gregkh@...e.de,
	linux-kernel@...r.kernel.org
Subject: Re: Kubuntu's udev broken with 2.6.18-rc2-mm1

On Thu, 27 Jul 2006 12:56:55 PDT, Andrew Morton said:
> On Fri, 28 Jul 2006 15:46:08 -0400
> Andrew James Wade <andrew.j.wade@...il.com> wrote:
> 
> > Hello,
> > 
> > Some change between -rc1-mm2 and -rc2-mm1 broke Kubuntu's udev
> > (079-0ubuntu34). In particular /dev/mem went missing, and /dev/null had
> > bogus permissions (crw-------). I've kludged around the problem by
> > populating /lib/udev/devices from a good /dev, but I'm assuming the
> > breakage was unintentional.
> > 
> 
> /dev/null damage is due to a combination of vdso-hash-style-fix.patch and
> doing the kernel build as root (don't do that).

Hmm... I thought the vdso-hash whoops caused /dev/null to get removed and
thus recreated as a regular file - Andrew Wade is showing it as being
mode 600 - but still a 'char special'?

Or did udev get there before somebody managed to recreate it, and it
stuck funky permissions on it?

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