Re: kobj refcounting weirdness

[Alex Chiang <achiang@hp.com>]

* Vegard Nossum <vegard.nossum@gmail.com>:
> 2009/3/9 Alex Chiang <achiang@hp.com>:
> > * Matthew Wilcox <matthew@wil.cx>:
> >> On Mon, Mar 09, 2009 at 10:50:10AM -0600, Alex Chiang wrote:
> >> > I thought about the allocators returning a pointer to the same
> >> > location that maybe has some valid looking data hanging around,
> >> > but it's not wise for someone like me to go pointing fingers at
> >> > the allocator before I've proven the bug isn't in my code. ;)
> >>
> >> Slab poisoning would be the logical next thing to try to decide whether
> >> the allocator is wrong or you're using it wrong ;-)
> >
> > We had a double free in the PCIe port driver. Removing the double
> > free seems to fix my issue.
> >
> > The double free is only in Jesse's linux-next branch, so no need
> > to worry about it in mainline/stable.
> 
> Sorry for butting in, just wondering if I could have the patch to fix
> the double free? :-)

http://thread.gmane.org/gmane.linux.kernel.pci/3524

Remember, it only applies to Jesse's linux-next, since it has
Rafael's latest port driver cleanups.

If you apply it to mainline, you will leak memory.

Thanks.

/ac