Race condition in readWriteToCloserWrapper causes panic in concurrent Read/Close

[amritansh1502]

What Happened

readWriteToCloserWrapper in pkg/ioutils/readers.go embeds io.Reader directly with no synchronization between Read and Close. When Close is called by one goroutine while another is reading (e.g. via tar-split NewInputTarStream), it results in a nil pointer dereference panic in
bufio.(*Reader).Read.This causes CRI-O crash loops during concurrent ImagePull/ImageStatus operations: cri-o/cri-o#10179

Reproducer and full analysis in the CRI-O issue above.

Happy to submit a fix PR.

[github-actions]

This repository has been migrated to https://github.com/containers/container-libs. Please open your issue there.