> On Jun 12, 2024, at 16:29, Oscar Salvador <osalvador@xxxxxxx> wrote: > > dequeue_hugetlb_folio_nodemask() expects a preferred node where to get the > hugetlb page from. > It does not expect, though, users to pass NUMA_NO_NODE, otherwise we will > get trash when trying to get the zonelist from that node. > All current users are careful enough to not pass NUMA_NO_NODE, but > it opens the door for new users to get this wrong since it is not > documented [0]. > Guard against this by getting the local nid if NUMA_NO_NODE was passed. > > [0] https://lore.kernel.org/linux-mm/0000000000004f12bb061a9acf07@xxxxxxxxxx/ > > Closes: https://lore.kernel.org/linux-mm/0000000000004f12bb061a9acf07@xxxxxxxxxx/ > Reported-and-tested-by: syzbot+569ed13f4054f271087b@xxxxxxxxxxxxxxxxxxxxxxxxx > Signed-off-by: Oscar Salvador <osalvador@xxxxxxx> Reviewed-by: Muchun Song <muchun.song@xxxxxxxxx> Thanks.
