[v3,0/3] overflow.h: Add arithmetic shift helper

Message

Kees Cook Aug. 1, 2018, 6:09 a.m. UTC

This adds the shift overflow helper, selftests, and first usage.

-Kees

v3:
- add even more test cases (type mismatches, more signed overflows).
- fix documentation typo on argument name.
v2:
- swap out selftests with framework from Rasmus, add lots more tests.
- drop double-assignment in helper.


Jason Gunthorpe (1):
  overflow.h: Add arithmetic shift helper

Kees Cook (1):
  test_overflow: Add shift overflow tests

Leon Romanovsky (1):
  RDMA/mlx5: Fix shift overflow in mlx5_ib_create_wq

 drivers/infiniband/hw/mlx5/qp.c |   5 +-
 include/linux/overflow.h        |  31 +++++
 lib/test_overflow.c             | 198 +++++++++++++++++++++++++++++++-
 3 files changed, 232 insertions(+), 2 deletions(-)