[rdma-next,v4,0/3] overflow.h: Add left-shift helper

Message

Kees Cook Aug. 1, 2018, 9:25 p.m. UTC

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

-Kees

v4:
- actually fix docs typo
- rename to check_shl_overflow()
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 |   4 +-
 include/linux/overflow.h        |  31 +++++
 lib/test_overflow.c             | 198 +++++++++++++++++++++++++++++++-
 3 files changed, 231 insertions(+), 2 deletions(-)

Comments

Jason Gunthorpe Aug. 8, 2018, 3:53 p.m. UTC | #1

On Wed, Aug 01, 2018 at 02:25:38PM -0700, Kees Cook wrote:
> This adds the left-shift overflow helper, selftests, and first usage.
> 
> -Kees
> 
> v4:
> - actually fix docs typo
> - rename to check_shl_overflow()
> 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

Applied to the RDMA for-next tree, thanks

Jason
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