diff options
| author | Miaohe Lin <[email protected]> | 2021-06-30 18:50:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2021-06-30 20:47:28 -0700 |
| commit | 014284a0815f6b9a6e10c8d575d37a5357ce033d (patch) | |
| tree | 7c6bcfdf892c9c32c5db5f19f141e6d87d305804 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | e3c0db4fec46b46a0c22b46bb55392b36ec940fc (diff) | |
mm/z3fold: avoid possible underflow in z3fold_alloc()
It is not enough to just make sure the z3fold header is not larger than
the page size. When z3fold header is equal to PAGE_SIZE, we would
underflow when check alloc size against PAGE_SIZE - ZHDR_SIZE_ALIGNED -
CHUNK_SIZE in z3fold_alloc(). Make sure there has remaining spaces for
its buddy to fix this theoretical issue.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Miaohe Lin <[email protected]>
Reviewed-by: Vitaly Wool <[email protected]>
Cc: Hillf Danton <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions