From 4c3cb6e9a9d94d1553807854a565cd27ff4c22aa Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Sat, 3 Sep 2016 10:36:00 -0700 Subject: 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 --- drivers/dax/dax.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/dax') 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); -- cgit v1.2.3-58-ga151