From: Colin Cross Date: Sat, 9 May 2015 00:05:44 +0000 (-0700) Subject: iommu/exynos: Tell kmemleak to ignore 2nd level page tables X-Git-Tag: v4.14-rc1~5129^2~4^2~15 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dc3814f404dfb82fc40f403725ad0548c9541d09;p=platform%2Fkernel%2Flinux-rpi.git iommu/exynos: Tell kmemleak to ignore 2nd level page tables The pointers to the 2nd level page tables are converted to 1st level page table entries, which means kmemleak can't find them and assumes they have been leaked. Call kmemleak_ignore on the 2nd level page tables to prevent them from showing up in kmemleak reports. Signed-off-by: Colin Cross Signed-off-by: Dmitry Torokhov Signed-off-by: Joerg Roedel --- diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 3e89850..e54c1be 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -862,6 +862,7 @@ static sysmmu_pte_t *alloc_lv2entry(struct exynos_iommu_domain *priv, return ERR_PTR(-ENOMEM); *sent = mk_lv1ent_page(virt_to_phys(pent)); + kmemleak_ignore(pent); *pgcounter = NUM_LV2ENTRIES; pgtable_flush(pent, pent + NUM_LV2ENTRIES); pgtable_flush(sent, sent + 1);