[Xen-changelog] [xen stable-4.12] AMD/IOMMU: free more memory when cleaning up after error

[patchbot@xxxxxxx]

commit 491edac2cb0848d793b2760b3d8a67fab23c7ca7
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri Jul 26 11:00:50 2019 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Jul 26 11:00:50 2019 +0200

    AMD/IOMMU: free more memory when cleaning up after error
    
    The interrupt remapping in-use bitmaps were leaked in all cases. The
    ring buffers and the mapping of the MMIO space were leaked for any IOMMU
    that hadn't been enabled yet.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Brian Woods <brian.woods@xxxxxxx>
    master commit: 6ae22e7aac8fb0d39318eb27eab439dd97521174
    master date: 2019-07-22 11:59:01 +0200
---
 xen/drivers/passthrough/amd/iommu_init.c | 11 +++++------
 xen/drivers/passthrough/amd/iommu_intr.c |  2 ++
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/xen/drivers/passthrough/amd/iommu_init.c 
b/xen/drivers/passthrough/amd/iommu_init.c
index e4b267ea61..6c75c2daee 100644
--- a/xen/drivers/passthrough/amd/iommu_init.c
+++ b/xen/drivers/passthrough/amd/iommu_init.c
@@ -1073,13 +1073,12 @@ static void __init amd_iommu_init_cleanup(void)
     {
         list_del(&iommu->list);
         if ( iommu->enabled )
-        {
             disable_iommu(iommu);
-            deallocate_ring_buffer(&iommu->cmd_buffer);
-            deallocate_ring_buffer(&iommu->event_log);
-            deallocate_ring_buffer(&iommu->ppr_log);
-            unmap_iommu_mmio_region(iommu);
-        }
+
+        deallocate_ring_buffer(&iommu->cmd_buffer);
+        deallocate_ring_buffer(&iommu->event_log);
+        deallocate_ring_buffer(&iommu->ppr_log);
+        unmap_iommu_mmio_region(iommu);
         xfree(iommu);
     }
 
diff --git a/xen/drivers/passthrough/amd/iommu_intr.c 
b/xen/drivers/passthrough/amd/iommu_intr.c
index dad2d1e5ab..d4ff8c18f9 100644
--- a/xen/drivers/passthrough/amd/iommu_intr.c
+++ b/xen/drivers/passthrough/amd/iommu_intr.c
@@ -610,6 +610,8 @@ int __init amd_iommu_free_intremap_table(
 {
     void *tb = ivrs_mapping->intremap_table;
 
+    XFREE(ivrs_mapping->intremap_inuse);
+
     if ( tb )
     {
         __free_amd_iommu_tables(tb, INTREMAP_TABLE_ORDER);
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.12

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