Re: 2.6.15-git7 oopses in ext3 during LTP runs II - more problems

[Andrew Morton <akpm@osdl.org>]

Andi Kleen <ak@suse.de> wrote:
>
> On Wednesday 11 January 2006 22:27, Arjan van de Ven wrote:
> > > 15/fs/ext3/super.c~	2006-01-11 21:54:13.000000000 +0100
> > > > +++ linux-2.6.15/fs/ext3/super.c	2006-01-11 21:54:13.000000000 +0100
> > > > @@ -2150,7 +2150,7 @@
> > > >  
> > > >  static void ext3_write_super (struct super_block * sb)
> > > >  {
> > > > -	if (mutex_trylock(&sb->s_lock) != 0)
> > > > +	if (!mutex_trylock(&sb->s_lock) != 0)
> > > >  		BUG();
> > > >  	sb->s_dirt = 0;
> > > >  }
> > > 
> > > We expect the lock to be held on entry.  Hence we expect mutex_trylock()
> > > to return zero.
> > 
> > you are correct, and the x86-64 mutex.h is buggy
> 
> While this patch seemed  to fix LTP my desktop running the same kernel (with 
> mutex fix) hung the mailer while sending an unrelated mail. Again on ext3.
> 
> I unfortunately don't have the backtraces anymore because I couldn't
> save them to disk before the reboot (and forgot to copy them
> to another system sorry), but they were also hanging in some JBD/ext3
> functions in D, with all disk accesses hanging.
> 
> So things appear to be still broken in ext3 land.

Are you using MD?

sata?   If so, which?