Re: bug in tty ldisc and friends

From: Ingo Molnar
Date: Tue Jun 16 2009 - 05:10:00 EST

* Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:

> > Hm, have you tried the patch i sent to you that extends the
> > number-lock-locks-tracked limit you have run into? It is
> > trivial.
> I tried upping the number of locks a while ago - it has no effect,
> which checking on irc seems to fit the general pattern of the
> reports against Fedora.
> The good thing is I trigger this at boot time reliably - so if
> you've got some debug stuff you want to stick in I can do that

Could you please turn on CONFIG_DEBUG_LOCKDEP=y and after the
overflow has happened, send us (or upload somewhere) the output of
"cat /proc/lock*" ?

If we run out of chains then the source of the leak should be
clearly visible in that debug outpt.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at