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| author | yzhai003@ucr.edu <yzhai003@ucr.edu> | 2018-06-01 20:30:14 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2018-07-06 13:18:11 +0200 |
| commit | 4674686d6c8974eb4eebec894c398a0f6c506af3 (patch) | |
| tree | 25a42871978b6d3e4494901f5de8a3ad9484e9f6 /drivers/iommu | |
| parent | Linux 4.18-rc3 (diff) | |
| download | linux-4674686d6c8974eb4eebec894c398a0f6c506af3.tar.xz linux-4674686d6c8974eb4eebec894c398a0f6c506af3.zip | |
iommu/amd: Argument page_size could be uninitialized
Argument "page_size" passing to function "fetch_pte" could be
uninitialized if the function returns NULL
The caller "iommu_unmap_page" checks the return value but the page_size is
used outside the if block.
Signed-off-by: yzhai003@ucr.edu <yzhai003@ucr.edu>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 596b95c50051..e688169721b8 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1404,6 +1404,8 @@ static u64 *fetch_pte(struct protection_domain *domain, int level; u64 *pte; + *page_size = 0; + if (address > PM_LEVEL_SIZE(domain->mode)) return NULL; |