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Re: ext2fs crash

From: Justus Winter
Subject: Re: ext2fs crash
Date: Tue, 17 May 2016 15:35:03 +0200
User-agent: alot/0.3.8.dev


Quoting Thomas Schwinge (2016-05-13 23:02:08)
> Hi!
> On Mon, 09 May 2016 16:11:52 +0200, Justus Winter 
> <4winter@informatik.uni-hamburg.de> wrote:
> > Quoting Thomas Schwinge (2016-04-27 22:53:33)
> > > [...]
> > > I suppose we want to fix (or, at least understand) that problem before
> > > making the releases?
> > 
> > No.  Let's take what we have and release it.  Even though some people
> > are having trouble with ext2fs, for most people it is working really
> > well (e.g. the build daemons).
> So, the ext2fs issues (bogus port deallocations, crash) are something to
> look into (later, I agree), [...]

I believe I can shed some light on the former problem:

$ settrans -ac hi /hurd/hello ; cat hi ; pkill hello ; rm hi
Hello, world!
(kernel complaining about ext2fs doing bogus port operations)

The problem is that libfshelp doesn't handle translators dying right.
I added code for the recursive mtab translator to do that, assuming
that the existing code copes with translators going away, but it does
not.  This merely needs to be implemented.


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