x86/amd-iommu: Use helper function to destroy domain

commit 8b408fe4f853dcfa18d133aa4cf1d7546b4c3870 upstream.

In the amd_iommu_domain_destroy the protection_domain_free
function is partly reimplemented. The 'partly' is the bug
here because the domain is not deleted from the domain list.
This results in use-after-free errors and data-corruption.
Fix it by just using protection_domain_free instead.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 3 deletions

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 0e9ab4af619b..2e775169bdf0 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -2379,9 +2379,7 @@ static void amd_iommu_domain_destroy(struct iommu_domain *dom)
 
         free_pagetable(domain);
 
-        domain_id_free(domain->id);
-
-        kfree(domain);
+        protection_domain_free(domain);
 
         dom->priv = NULL;
 }