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| author | Joerg Roedel <jroedel@suse.de> | 2017-06-16 16:09:58 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2017-06-22 12:54:20 +0200 |
| commit | f601927136d69be49f0a14ae820b44c02fa591ba (patch) | |
| tree | d9a257e13d87ff0fe163fc36fa4c5c796b2baf1b /drivers/iommu | |
| parent | iommu/amd: Check for error states first in iommu_go_to_state() (diff) | |
| download | linux-f601927136d69be49f0a14ae820b44c02fa591ba.tar.xz linux-f601927136d69be49f0a14ae820b44c02fa591ba.zip | |
iommu/amd: Set global pointers to NULL after freeing them
Avoid any tries to double-free these pointers.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd_iommu_init.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index a6b81a05a0d1..8cc507f96f3a 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -2114,18 +2114,22 @@ static void __init free_iommu_resources(void) kmemleak_free(irq_lookup_table); free_pages((unsigned long)irq_lookup_table, get_order(rlookup_table_size)); + irq_lookup_table = NULL; kmem_cache_destroy(amd_iommu_irq_cache); amd_iommu_irq_cache = NULL; free_pages((unsigned long)amd_iommu_rlookup_table, get_order(rlookup_table_size)); + amd_iommu_rlookup_table = NULL; free_pages((unsigned long)amd_iommu_alias_table, get_order(alias_table_size)); + amd_iommu_alias_table = NULL; free_pages((unsigned long)amd_iommu_dev_table, get_order(dev_table_size)); + amd_iommu_dev_table = NULL; free_iommu_all(); @@ -2195,6 +2199,7 @@ static void __init free_dma_resources(void) { free_pages((unsigned long)amd_iommu_pd_alloc_bitmap, get_order(MAX_DOMAIN_ID/8)); + amd_iommu_pd_alloc_bitmap = NULL; free_unity_maps(); } |