On Tue, Jun 16, 2020 at 11:07 PM John Fastabend
<john.fastabend@xxxxxxxxx> wrote:
>
> Toke Høiland-Jørgensen wrote:
> > Syzkaller discovered that creating a hash of type devmap_hash with a large
> > number of entries can hit the memory allocator limit for allocating
> > contiguous memory regions. There's really no reason to use kmalloc_array()
> > directly in the devmap code, so just switch it to the existing
> > bpf_map_area_alloc() function that is used elsewhere.
> >
> > Reported-by: Xiumei Mu <xmu@xxxxxxxxxx>
> > Fixes: 6f9d451ab1a3 ("xdp: Add devmap_hash map type for looking up devices by hashed index")
> > Signed-off-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
> > ---
> > kernel/bpf/devmap.c | 10 ++++++----
> > 1 file changed, 6 insertions(+), 4 deletions(-)
> >
>
> Acked-by: John Fastabend <john.fastabend@xxxxxxxxx>
Applied. Thanks
