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authorJerry Snitselaar <jsnitsel@redhat.com>2022-10-19 08:44:47 +0800
committerJoerg Roedel <jroedel@suse.de>2022-10-21 10:49:35 +0200
commit620bf9f981365c18cc2766c53d92bf8131c63f32 (patch)
treeac29866b2cfd8a40b051ed79cbbd3b1fd3d2202d /drivers/iommu
parent5566e68d829f5d87670d5984c1c2ccb4c518405f (diff)
iommu/vt-d: Clean up si_domain in the init_dmars() error path
A splat from kmem_cache_destroy() was seen with a kernel prior to commit ee2653bbe89d ("iommu/vt-d: Remove domain and devinfo mempool") when there was a failure in init_dmars(), because the iommu_domain cache still had objects. While the mempool code is now gone, there still is a leak of the si_domain memory if init_dmars() fails. So clean up si_domain in the init_dmars() error path. Cc: Lu Baolu <baolu.lu@linux.intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Will Deacon <will@kernel.org> Cc: Robin Murphy <robin.murphy@arm.com> Fixes: 86080ccc223a ("iommu/vt-d: Allocate si_domain in init_dmars()") Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com> Link: https://lore.kernel.org/r/20221010144842.308890-1-jsnitsel@redhat.com Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/intel/iommu.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index b3cf0f991e29..48cdcd0a5cf3 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -2410,6 +2410,7 @@ static int __init si_domain_init(int hw)
if (md_domain_init(si_domain, DEFAULT_DOMAIN_ADDRESS_WIDTH)) {
domain_exit(si_domain);
+ si_domain = NULL;
return -EFAULT;
}
@@ -3052,6 +3053,10 @@ free_iommu:
disable_dmar_iommu(iommu);
free_dmar_iommu(iommu);
}
+ if (si_domain) {
+ domain_exit(si_domain);
+ si_domain = NULL;
+ }
return ret;
}