Subject: Re: PR 36963
To: Bill Stouder-Studenmund <>
From: Jan Danielsson <>
List: tech-kern
Date: 09/23/2007 01:39:31
Hash: SHA512

Bill Stouder-Studenmund wrote:
>>> Hm.  Here's a thought: if he's logging in on the console, init might be
>>> using a a file descriptor bound to the device node _outside_ the chroot.
>>> I can think of a few ways chaos could then ensue, given subtle bugs in
>>> the session-handling or device alias detection code...
>>    By "chaos", do you mean "what you are currently seeing", or do you
>> mean "everything will be fubar Any Time Now"?
> I'm not Thor (nor do I play one on TV), but I suspect something more akin 
> to "what you are currently seeing".

  That's what I thought; but I tend to get a little pessimistic when my
system isn't working as I want it to. :)

> Since it seems to be the statvfs path munging code that's at issue, try 
> putting printf()s in it indicating what's going on.

   I will. On that note; do printf()'s end up in dmesg?

> As a total aside, I think that code is questionable in this case. The idea 
> behind it is (I think) to hide mount points that aren't in the chroot, and 
> to not leak info about the chroot path.
> As I understand this case, though, your chroot is the mount point.  :-)

   Hmm.. In this thread, I've detected a hint of the opinion that the
init.root sysctl is a bad idea to begin with. I guess I should have
asked first; but OTOH, it was a documented feature, so I didn't expect
it to blow up in my face this bad. :(

- --
Kind regards,
Jan Danielsson

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