linux-kernel - Re: BUG_ON(nd->inode != parent->d

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Message-ID: <20130309042658.GB1396@redhat.com>
Date:	Fri, 8 Mar 2013 23:26:58 -0500
From:	Dave Jones <davej@...hat.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: BUG_ON(nd->inode != parent->d_inode);

On Fri, Mar 08, 2013 at 07:38:33PM -0800, Eric W. Biederman wrote:
 > Dave Jones <davej@...hat.com> writes:
 > 
 > > On Fri, Mar 08, 2013 at 07:16:09PM -0800, Linus Torvalds wrote:
 > >  > Goodie. Your bug reports gave me heartburn. But it sounds like we have an
 > >  > angle on all of the ones you've seen now?
 > >  > 
 > >  > Or have I forgotten about some case?
 > >  
 > > To be honest I've lost track of the whole collection.
 > > Let me repull your latest tree, and see what falls out.
 > > (I'll turn off CONFIG_USER_NS for now too until that gets fixed)
 > 
 > It was CONFIG_UTS_NS that tripped you.  
 > 
 > Since I can trigger this with /proc/self/ns/mnt/a you are going to be
 > able to compile this one out.

fwiw, the other namespace procfs files look like they have the same bug

I just triggered it again on /proc/571/task/571/ns/net

	Dave

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