+ mm-hmm-hmm_pfns_bad-was-accessing-wrong-struct.patch added to -mm tree

[akpm@linux-foundation.org]

The patch titled
     Subject: mm/hmm: hmm_pfns_bad() was accessing wrong struct
has been added to the -mm tree.  Its filename is
     mm-hmm-hmm_pfns_bad-was-accessing-wrong-struct.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-hmm-hmm_pfns_bad-was-accessing-wrong-struct.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-hmm-hmm_pfns_bad-was-accessing-wrong-struct.patch

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------------------------------------------------------
From: Jérôme Glisse <jglisse@redhat.com>
Subject: mm/hmm: hmm_pfns_bad() was accessing wrong struct

The private field of mm_walk struct point to an hmm_vma_walk struct and
not to the hmm_range struct desired.  Fix to get proper struct pointer.

Link: http://lkml.kernel.org/r/20180320020038.3360-6-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Cc: Evgeny Baskakov <ebaskakov@nvidia.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Mark Hairgrove <mhairgrove@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Logan Gunthorpe <logang@deltatee.com>
Cc: Stephen Bates <sbates@raithlin.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


diff -puN mm/hmm.c~mm-hmm-hmm_pfns_bad-was-accessing-wrong-struct mm/hmm.c
--- a/mm/hmm.c~mm-hmm-hmm_pfns_bad-was-accessing-wrong-struct
+++ a/mm/hmm.c
@@ -312,7 +312,8 @@ static int hmm_pfns_bad(unsigned long ad
 			unsigned long end,
 			struct mm_walk *walk)
 {
-	struct hmm_range *range = walk->private;
+	struct hmm_vma_walk *hmm_vma_walk = walk->private;
+	struct hmm_range *range = hmm_vma_walk->range;
 	hmm_pfn_t *pfns = range->pfns;
 	unsigned long i;
 
_

Patches currently in -mm which might be from jglisse@redhat.com are

mm-hmm-fix-header-file-if-else-endif-maze-v2.patch
mm-hmm-unregister-mmu_notifier-when-last-hmm-client-quit.patch
mm-hmm-hmm_pfns_bad-was-accessing-wrong-struct.patch
mm-hmm-use-struct-for-hmm_vma_fault-hmm_vma_get_pfns-parameters-v2.patch
mm-hmm-remove-hmm_pfn_read-flag-and-ignore-peculiar-architecture-v2.patch
mm-hmm-use-uint64_t-for-hmm-pfn-instead-of-defining-hmm_pfn_t-to-ulong-v2.patch
mm-hmm-cleanup-special-vma-handling-vm_special.patch
mm-hmm-do-not-differentiate-between-empty-entry-or-missing-directory-v2.patch
mm-hmm-rename-hmm_pfn_device_unaddressable-to-hmm_pfn_device_private.patch
mm-hmm-move-hmm_pfns_clear-closer-to-where-it-is-use.patch
mm-hmm-factor-out-pte-and-pmd-handling-to-simplify-hmm_vma_walk_pmd.patch
mm-hmm-change-hmm_vma_fault-to-allow-write-fault-on-page-basis.patch
mm-hmm-use-device-driver-encoding-for-hmm-pfn-v2.patch