On Wed, May 06, 2015 at 12:42:54PM +1000, NeilBrown wrote:
> > static int link_path_walk(const char *name, struct nameidata *nd)
> > {
> > - struct saved {
> > - struct path link;
> > - void *cookie;
> > - const char *name;
> > - } stack[MAX_NESTED_LINKS], *last = stack + nd->depth - 1;
> > + struct saved *last = nd->stack;
>
> This looks wrong. 'last' used to be dependent on nd->depth, now it isn't.
On the entry to link_path_walk() we have nd->depth == 0.
And nd->depth and last are changed in sync.
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