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/20180323005527.758-6-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: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
mm/hmm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
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 @@ -336,7 +336,8 @@ 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;
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