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| author | Xiongfeng Wang <wangxiongfeng2@huawei.com> | 2022-12-01 07:01:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-08 13:18:34 +0300 |
| commit | 876d7bfb89273997056220029ff12b1c2cc4691d (patch) | |
| tree | 432198967bf84d4ddc0296bd312b3b8b6018c2bc /lib | |
| parent | e1146f72b9b174b5dd022f2cdfcfcf61663c6243 (diff) | |
| download | linux-876d7bfb89273997056220029ff12b1c2cc4691d.tar.xz | |
iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init()
[ Upstream commit 4bedbbd782ebbe7287231fea862c158d4f08a9e3 ]
for_each_pci_dev() is implemented by pci_get_device(). The comment of
pci_get_device() says that it will increase the reference count for the
returned pci_dev and also decrease the reference count for the input
pci_dev @from if it is not NULL.
If we break for_each_pci_dev() loop with pdev not NULL, we need to call
pci_dev_put() to decrease the reference count. Add the missing
pci_dev_put() for the error path to avoid reference count leak.
Fixes: 2e4552893038 ("iommu/vt-d: Unify the way to process DMAR device scope array")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Link: https://lore.kernel.org/r/20221121113649.190393-3-wangxiongfeng2@huawei.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 'lib')
0 files changed, 0 insertions, 0 deletions