Commit a04e1928 authored by Miaohe Lin's avatar Miaohe Lin Committed by Andrew Morton
Browse files

mm/memremap: fix missing call to untrack_pfn() in pagemap_range() 

We forget to call untrack_pfn() to pair with track_pfn_remap() when range
is not allowed to hotplug.  Fix it by jump err_kasan.

Link: https://lkml.kernel.org/r/20220531122643.25249-1-linmiaohe@huawei.com


Fixes: bca3feaa ("mm/memory_hotplug: prevalidate the address range being added with platform")
Signed-off-by: default avatarMiaohe Lin <linmiaohe@huawei.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Acked-by: default avatarMuchun Song <songmuchun@bytedance.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 547be963

mm/memremap.c

+1 −1
Original line number Diff line number Diff line
@@ -214,7 +214,7 @@ static int pagemap_range(struct dev_pagemap *pgmap, struct mhp_params *params, 


	if (!mhp_range_allowed(range->start, range_len(range), !is_private)) {

		error = -EINVAL;

		goto err_pfn_remap;

		goto err_kasan;

	}



	mem_hotplug_begin();