Re: Dcache oops

From: Al Viro
Date: Fri Jun 03 2016 - 18:29:35 EST

On Fri, Jun 03, 2016 at 11:23:55PM +0100, Al Viro wrote:

> It's not that. It's explicit put_link() in do_last(), followed by
> ESTALEOPEN and subsequent misbegotten "retry the last step on ESTALEOPEN"
> looking at now-freed nd-> IOW, the bug predates delayed_call
> stuff.

FWIW, I'd stepped into that in d63ff28f "namei: make should_follow_link() store
the link in nd->link", so it's 4.1+ mess. delayed_call stuff is 4.4+...