diff options
| author | Shiraz Hashim <shashim@codeaurora.org> | 2016-07-04 15:05:14 +0530 |
|---|---|---|
| committer | Kyle Yan <kyan@codeaurora.org> | 2016-07-11 14:26:28 -0700 |
| commit | 81218366f19d6d290f861a3dcb565fb49c21b488 (patch) | |
| tree | a424d5a952f769c04a400b80e179f9070bda8b95 /drivers | |
| parent | 87b1536fb347209143e306f5b56b8dc23282d192 (diff) | |
iommu/io-pgtable-fast: validate data before use
Return error on data allocation failure to prevent use
after free case.
Change-Id: I9d173756e277c9006220c02c209309167f179609
Signed-off-by: Shiraz Hashim <shashim@codeaurora.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iommu/io-pgtable-fast.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/iommu/io-pgtable-fast.c b/drivers/iommu/io-pgtable-fast.c index 44307f67fd22..9a25ebfdc778 100644 --- a/drivers/iommu/io-pgtable-fast.c +++ b/drivers/iommu/io-pgtable-fast.c @@ -420,6 +420,9 @@ av8l_fast_alloc_pgtable(struct io_pgtable_cfg *cfg, void *cookie) struct av8l_fast_io_pgtable *data = av8l_fast_alloc_pgtable_data(cfg); + if (!data) + return NULL; + /* restrict according to the fast map requirements */ cfg->ias = 32; cfg->pgsize_bitmap = SZ_4K; |