Suppress "ioctl points to uninitialised" check (#48187)
Summary:
libcuda.so from CUDA-11.1 makes ioctl() that valgrind's memcheck tool considers dangerous
Instruct valgrind to suppress that check
Fixes false positives reported in https://app.circleci.com/pipelines/github/pytorch/pytorch/240774/workflows/d4c66de8-f13b-47a2-ae62-2ec1bbe0664b/jobs/9026496
Pull Request resolved: https://github.com/pytorch/pytorch/pull/48187
Reviewed By: janeyx99
Differential Revision: D25059850
Pulled By: malfet
fbshipit-source-id: 982df5860524482b0fcb2bfc6bb490fb06694cf6
