On Sun, Apr 07, 2024 at 04:54:56PM +0800, Miaohe Lin wrote: > In short, below scene breaks the lock dependency chain: > > memory_failure > __page_handle_poison > zone_pcp_disable -- lock(pcp_batch_high_lock) > dissolve_free_huge_page > __hugetlb_vmemmap_restore_folio > static_key_slow_dec > cpus_read_lock -- rlock(cpu_hotplug_lock) > > Fix this by calling drain_all_pages() instead. > > Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> Acked-by: Oscar Salvador <osalvador@xxxxxxx> Thanks! -- Oscar Salvador SUSE Labs
