diff options
| author | Peter Xu <[email protected]> | 2021-06-15 18:23:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2021-06-16 09:24:42 -0700 |
| commit | 099dd6878b9b12d6bbfa6bf29ce0c8ddd38f6901 (patch) | |
| tree | b6088a641393719d3fd835cd9a0c346ba7c54b30 /lib/test_fortify/write_overflow-strncpy-src.c | |
| parent | 25182f05ffed0b45602438693e4eed5d7f3ebadd (diff) | |
mm/swap: fix pte_same_as_swp() not removing uffd-wp bit when compare
I found it by pure code review, that pte_same_as_swp() of unuse_vma()
didn't take uffd-wp bit into account when comparing ptes.
pte_same_as_swp() returning false negative could cause failure to
swapoff swap ptes that was wr-protected by userfaultfd.
Link: https://lkml.kernel.org/r/[email protected]
Fixes: f45ec5ff16a7 ("userfaultfd: wp: support swap and page migration")
Signed-off-by: Peter Xu <[email protected]>
Acked-by: Hugh Dickins <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: <[email protected]> [5.7+]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'lib/test_fortify/write_overflow-strncpy-src.c')
0 files changed, 0 insertions, 0 deletions