diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2016-09-03 19:36:00 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-09-03 19:40:57 +0200 |
| commit | 4c3cb6e9a9d94d1553807854a565cd27ff4c22aa (patch) | |
| tree | 3080bceb1954d684c570fa96337098f433165f9b | |
| parent | Linux 4.8-rc4 (diff) | |
| download | linux-4c3cb6e9a9d94d1553807854a565cd27ff4c22aa.tar.xz linux-4c3cb6e9a9d94d1553807854a565cd27ff4c22aa.zip | |
dax: fix mapping size check
pgoff_to_phys() validates that both the starting address and the length
of the mapping against the resource list. We need to check for a
mapping size of PMD_SIZE not PAGE_SIZE in the pmd fault path.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| -rw-r--r-- | drivers/dax/dax.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c index 803f3953b341..29f600f2c447 100644 --- a/drivers/dax/dax.c +++ b/drivers/dax/dax.c @@ -459,7 +459,7 @@ static int __dax_dev_pmd_fault(struct dax_dev *dax_dev, } pgoff = linear_page_index(vma, pmd_addr); - phys = pgoff_to_phys(dax_dev, pgoff, PAGE_SIZE); + phys = pgoff_to_phys(dax_dev, pgoff, PMD_SIZE); if (phys == -1) { dev_dbg(dev, "%s: phys_to_pgoff(%#lx) failed\n", __func__, pgoff); |