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| author | Matthew Wilcox <willy@infradead.org> | 2019-01-08 15:23:25 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-01-08 17:15:11 -0800 |
| commit | 1ed7293ac40c5b1950b8ab21b6bc1838578ae2ad (patch) | |
| tree | 5df045d6baa94bda2d7303456f1828bbf49cb28a /mm | |
| parent | aff876dcf4461f311adbdf39ce48c134b3f99c49 (diff) | |
| download | linux-0-day-1ed7293ac40c5b1950b8ab21b6bc1838578ae2ad.tar.gz linux-0-day-1ed7293ac40c5b1950b8ab21b6bc1838578ae2ad.tar.xz | |
mm/memory.c: initialise mmu_notifier_range correctly
One of the paths in follow_pte_pmd() initialised the mmu_notifier_range
incorrectly.
Link: http://lkml.kernel.org/r/20190103002126.GM6310@bombadil.infradead.org
Fixes: ac46d4f3c432 ("mm/mmu_notifier: use structure for invalidate_range_start/end calls v2")
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Tested-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Jérôme Glisse <jglisse@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c index 5e46836714dc9..e11ca9dd823f2 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4099,8 +4099,8 @@ static int __follow_pte_pmd(struct mm_struct *mm, unsigned long address, goto out; if (range) { - range->start = address & PAGE_MASK; - range->end = range->start + PAGE_SIZE; + mmu_notifier_range_init(range, mm, address & PAGE_MASK, + (address & PAGE_MASK) + PAGE_SIZE); mmu_notifier_invalidate_range_start(range); } ptep = pte_offset_map_lock(mm, pmd, address, ptlp); |