writing sync procError: write sync: file already closed

[lifubang]

Build runc from the main branch in a amd64 host, and use a different architecture container entrypoint to start the container without runc-dmz, we will get an error:

root@iZj6cdnzj9sp96xf38htrnZ:~/ubuntutest# RUNC_DMZ=legacy /root/go/src/github.com/opencontainers/runc/runc run ctest
writing sync procError: write sync: file already closed
exec /runc.arm64: exec format error
root@iZj6cdnzj9sp96xf38htrnZ:~/ubuntutest# echo $?
1
root@iZj6cdnzj9sp96xf38htrnZ:~/ubuntutest# runc run ctest
exec /runc.arm64: exec format error
root@iZj6cdnzj9sp96xf38htrnZ:~/ubuntutest# echo $?
1