From: Andrei Dulea <adulea@amazon.de>
Date: Fri, 13 Sep 2019 14:42:28 +0000 (+0200)
Subject: iommu/amd: Fix pages leak in free_pagetable()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=34c0989c05314b0288b058a4d1f6e58e2d320929;p=linux.git

iommu/amd: Fix pages leak in free_pagetable()

Take into account the gathered freelist in free_sub_pt(), otherwise we
end up leaking all that pages.

Fixes: 409afa44f9ba ("iommu/amd: Introduce free_sub_pt() function")
Signed-off-by: Andrei Dulea <adulea@amazon.de>
---

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 1ed3b98324bac..1385474463451 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -1425,7 +1425,7 @@ static void free_pagetable(struct protection_domain *domain)
 	BUG_ON(domain->mode < PAGE_MODE_NONE ||
 	       domain->mode > PAGE_MODE_6_LEVEL);
 
-	free_sub_pt(root, domain->mode, freelist);
+	freelist = free_sub_pt(root, domain->mode, freelist);
 
 	free_page_list(freelist);
 }