On Tue, 17 Jan 2023 20:12:49 +0100 Jann Horn <jannh@xxxxxxxxxx> wrote: > On Wed, Jan 11, 2023 at 2:33 PM Jann Horn <jannh@xxxxxxxxxx> wrote: > > If an ->anon_vma is attached to the VMA, collapse_and_free_pmd() requires > > it to be locked. retract_page_tables() bails out if an ->anon_vma is > > attached, but does this check before holding the mmap lock (as the comment > > above the check explains). > > @akpm please replace the commit message with the following, and maybe > also add a "Link:" entry pointing to > https://lore.kernel.org/linux-mm/CAG48ez3434wZBKFFbdx4M9j6eUwSUVPd4dxhzW_k_POneSDF+A@xxxxxxxxxxxxxx/ > for the reproducer. Done, thanks.
