Re: [PATCH v2 1/1] mm: fix vma->anon_name memory leak for anonymous shmem VMAs

[Holger Hoffstätte]

On 2023-01-05 10:03, David Hildenbrand wrote:
> On 05.01.23 03:39, Suren Baghdasaryan wrote:
> > On Wed, Jan 4, 2023 at 5:38 PM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> > > On Wed,  4 Jan 2023 16:02:40 -0800 Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote:
> > >
> > > > free_anon_vma_name() is missing a check for anonymous shmem VMA which
> > > > leads to a memory leak due to refcount not being dropped.  Fix this by
> > > > calling anon_vma_name_put() unconditionally. It will free vma->anon_name
> > > > whenever it's non-NULL.
> > > >
> > > > Fixes: d09e8ca6cb93 ("mm: anonymous shared memory naming")
> > >
> > > A cc:stable is appropriate here, yes?
> >
> > Hmm. The patch we are fixing here was merged in 6.2-rc1. Should I CC
> > stable to fix the previous -rc branch?
>
> No need for stable if it's not in a release kernel yet.

Commit d09e8ca6cb93 is in 6.1. The fix applies cleanly.

cheers
Holger