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| author | Jerry Snitselaar <jsnitsel@redhat.com> | 2022-10-19 03:44:47 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-30 11:41:18 +0300 |
| commit | d74196bb278b8f8af88e16bd595997dfa3d6fdb0 (patch) | |
| tree | 46385273cc34ba2efa89305f7ee2c0084e2c7a89 /drivers/iommu | |
| parent | ef11e8ec00b976a30131751cca1792ac6e87e95c (diff) | |
| download | linux-d74196bb278b8f8af88e16bd595997dfa3d6fdb0.tar.xz | |
iommu/vt-d: Clean up si_domain in the init_dmars() error path
[ Upstream commit 620bf9f981365c18cc2766c53d92bf8131c63f32 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index c48cf737b521..f23329b7f97c 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -2846,6 +2846,7 @@ 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; } @@ -3505,6 +3506,10 @@ free_iommu: disable_dmar_iommu(iommu); free_dmar_iommu(iommu); } + if (si_domain) { + domain_exit(si_domain); + si_domain = NULL; + } kfree(g_iommus); |