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| author | Miaohe Lin <linmiaohe@huawei.com> | 2022-07-12 21:05:42 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-08-28 14:02:43 -0700 |
| commit | ab74ef708dc51df7cf2b8a890b9c6990fac5c0c6 (patch) | |
| tree | 37814102f0120a2780afde292a65e73c7e9d406d /mm/shmem.c | |
| parent | ec6624452e36158d0813758d837f7a2263a4109d (diff) | |
| download | linux-stable-ab74ef708dc51df7cf2b8a890b9c6990fac5c0c6.tar.gz linux-stable-ab74ef708dc51df7cf2b8a890b9c6990fac5c0c6.tar.bz2 linux-stable-ab74ef708dc51df7cf2b8a890b9c6990fac5c0c6.zip | |
mm/hugetlb: avoid corrupting page->mapping in hugetlb_mcopy_atomic_pte
In MCOPY_ATOMIC_CONTINUE case with a non-shared VMA, pages in the page
cache are installed in the ptes. But hugepage_add_new_anon_rmap is called
for them mistakenly because they're not vm_shared. This will corrupt the
page->mapping used by page cache code.
Link: https://lkml.kernel.org/r/20220712130542.18836-1-linmiaohe@huawei.com
Fixes: f619147104c8 ("userfaultfd: add UFFDIO_CONTINUE ioctl")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/shmem.c')
0 files changed, 0 insertions, 0 deletions