Juergen Gross, le dim. 19 juin 2022 08:52:53 +0200, a ecrit:
> There is a subtle bug in ballooning code for PVH: in case ballooning
> extends above a non-RAM area of the memory map, wrong pages will be
> used.
>
> Signed-off-by: Juergen Gross <jgr...@suse.com>
Reviewed-by: Samuel Thibault <samuel.thiba...@ens-lyon.org>
> ---
> V2:
> - new patch
> ---
> balloon.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/balloon.c b/balloon.c
> index 6ad07644..55be8141 100644
> --- a/balloon.c
> +++ b/balloon.c
> @@ -124,7 +124,7 @@ int balloon_up(unsigned long n_pages)
> for ( pfn = 0; pfn < rc; pfn++ )
> {
> arch_pfn_add(start_pfn + pfn, balloon_frames[pfn]);
> - free_page(pfn_to_virt(nr_mem_pages + pfn));
> + free_page(pfn_to_virt(start_pfn + pfn));
> }
>
> nr_mem_pages += rc;
> --
> 2.35.3
>
