[BUG] Pairwise distances illegal memory access

[RAMitchell]

Describe the bug
Illegal memory access in pairwise_distances. Looks like an int being used as an index.

Steps/Code to reproduce bug

import cupy as cp
from cuml.metrics import pairwise_kernels

col = 1
# row = 46000 # Pass
row = 47000  # Illegal memory access
rs = cp.random.RandomState(259)
X = rs.normal(size=(row, col), dtype=cp.float32)
print(X.shape[0]**2 < 2**31)

K = pairwise_kernels(X, metric='rbf')

False
CUDA call='cudaEventDestroy(event_)' at file=/home/nfs/rorym/cuml/cpp/build/_deps/raft-src/cpp/include/raft/handle.hpp line=304 failed with an illegal memory access was encountered
Traceback (most recent call last):
  File "illegal.py", line 11, in <module>
    K = pairwise_kernels(X, metric='cosine')
  File "/home/nfs/rorym/anaconda3/envs/cuml_dev/lib/python3.7/site-packages/cuml/internals/api_decorators.py", line 465, in inner_with_getters
    ret_val = func(*args, **kwargs)
  File "/home/nfs/rorym/anaconda3/envs/cuml_dev/lib/python3.7/site-packages/cuml/metrics/pairwise_kernels.py", line 303, in pairwise_kernels
    return PAIRWISE_KERNEL_FUNCTIONS[metric](X, Y, **kwds)
  File "/home/nfs/rorym/anaconda3/envs/cuml_dev/lib/python3.7/site-packages/cuml/metrics/pairwise_kernels.py", line 82, in cosine_similarity
    K= 1.0 - cp.asarray(pairwise_distances(X, Y, metric='cosine'))
  File "/home/nfs/rorym/anaconda3/envs/cuml_dev/lib/python3.7/site-packages/cuml/internals/api_decorators.py", line 465, in inner_with_getters
    ret_val = func(*args, **kwargs)
  File "cuml/metrics/pairwise_distances.pyx", line 315, in cuml.metrics.pairwise_distances.pairwise_distances
  File "cuml/raft/common/handle.pyx", line 76, in cuml.raft.common.handle.Handle.sync
RuntimeError: CUDA error at: /home/nfs/rorym/anaconda3/envs/cuml_dev/include/rmm/cuda_stream_view.hpp:81: cudaErrorIllegalAddress an illegal memory access was encountered

[RAMitchell]

Related:
#2459
#4105