[0/2] mm/hmm: two bug fixes for hmm_range_fault()

Message

Ralph Campbell Aug. 23, 2019, 10:17 p.m. UTC

I have been working on converting Jerome's hmm_dummy driver and self
tests into a stand-alone set of tests to be included in
tools/testing/selftests/vm and came across these two bug fixes in the
process. The tests aren't quite ready to be posted as a patch.
I'm posting the fixes now since I thought they shouldn't wait.
They should probably have a fixes line but with all the HMM changes,
I wasn't sure exactly which commit to use.

These are based on top of Jason's latest hmm branch.

Ralph Campbell (2):
  mm/hmm: hmm_range_fault() NULL pointer bug
  mm/hmm: hmm_range_fault() infinite loop

 mm/hmm.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

Comments

Jason Gunthorpe Aug. 27, 2019, 10:48 p.m. UTC | #1

On Fri, Aug 23, 2019 at 03:17:51PM -0700, Ralph Campbell wrote:
> I have been working on converting Jerome's hmm_dummy driver and self
> tests into a stand-alone set of tests to be included in
> tools/testing/selftests/vm and came across these two bug fixes in the
> process. The tests aren't quite ready to be posted as a patch.
> I'm posting the fixes now since I thought they shouldn't wait.
> They should probably have a fixes line but with all the HMM changes,
> I wasn't sure exactly which commit to use.
> 
> These are based on top of Jason's latest hmm branch.
> 
> Ralph Campbell (2):
>   mm/hmm: hmm_range_fault() NULL pointer bug
>   mm/hmm: hmm_range_fault() infinite loop

Applied to hmm.git

Thanks,
Jason