Hi Yee,
On Tue, Jun 28, 2022 at 1:42 PM <yee.lee@xxxxxxxxxxxx> wrote:
> From: Yee Lee <yee.lee@xxxxxxxxxxxx>
>
> This patch solves two issues.
>
> (1) The pool allocated by memblock needs to unregister from
> kmemleak scanning. Apply kmemleak_ignore_phys to replace the
> original kmemleak_free as its address now is stored in the phys tree.
>
> (2) The pool late allocated by page-alloc doesn't need to unregister.
> Move out the freeing operation from its call path.
>
> Suggested-by: Catalin Marinas <catalin.marinas@xxxxxxx>
> Suggested-by: Marco Elver <elver@xxxxxxxxxx>
> Signed-off-by: Yee Lee <yee.lee@xxxxxxxxxxxx>
Thank you, this fixes the storm of
BUG: KFENCE: invalid read in scan_block+0x78/0x130
BUG: KFENCE: use-after-free read in scan_block+0x78/0x130
BUG: KFENCE: out-of-bounds read in scan_block+0x78/0x130
messages I was seeing on arm64.
Tested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
