Bug#961725: libopenblas-dev: On some cpus, openmp and pthread dead-lock

[Mo Zhou]

Control: severity -1 important
Control: tags -1 +moreinfo
Clarification: possibly a Ubuntu bug

Hello guys,

The way to reproduce with docker + ubuntu devel (20.10)

1. docker image pull ubuntu:devel
2. docker run -ti ubuntu:devel
3. apt update -y ; apt upgrade -y
4. apt install -y r-base-core
5. Rscript -e "example(solve)"  # good with netlib
6. apt install -y libopenblas-dev
7. Rscript -e "example(solve)"  # hang

The way to reproduce with nspawn/chroot + ubuntu focal (20.04)
if you don't have docker

1. mkdir Focal
2. debootstrap focal Focal/
3. systemd-nspawn -D Focal
4. apt update -y; apt upgrade -y
5. apt install -y r-base-core
6. Rscript -e "example(solve)"  # good with netlib
7. apt install -y libopenblas-dev
8. Rscript -e "example(solve)"  # hang

The way to reproduce with *. + debian

1. Not yet reproducible.