Cannot install: Docker error about openlane

[RTimothyEdwards]

Solution provided by @yrappt on the skywater-pdk slack workspace: This issue is from the spectre attack vulnerability in Intel processors, oddly enough, and there is a solution mentioned at the bottom of the page here: CentOS/sig-cloud-instance-images#103 , where the solution is to enable vsyscall at boot time by editing the grub config and rebooting. Worked like a charm.

[bzboi]

Hi, I'm running Ubuntu 20.04 on WSL2, is the edit made to grub in Ubuntu or in Centos? I tried "sudo nano /etc/default/grub" followed by "sudo update-grub" in Ubuntu and rebooted but am still seeing the same error. I'm a Docker noob and will need help if the edit needs to be made within Centos. Thanks.

[RTimothyEdwards]

@bzboi : There was a second solution that I had written in my notes that I had used earlier on an openlane install, which was to change "centos6" to "centos7" in the dockerfile. There are some issues with using centos7, but the only one I found was that yosys fails in centos7 due to a broken shared library reference. I made a symbolic link "/lib64/libffi.so.5" pointing to libffi.so.6 to fix that. After that, I was able to run the flow on a design. I have no idea if other centos7-compatibility problems might happen if you do that.

As for the above solution, I'm doubtful that "grub" actually does anything under WSL, since Windows does the booting, not Ubuntu.

[RTimothyEdwards]

I am reopening this issue, as @bzboi has an active and unsolved variant of this issue.

[nurirfansyah]

Hi, I'm running Ubuntu 20.04 on WSL2, is the edit made to grub in Ubuntu or in Centos? I tried "sudo nano /etc/default/grub" followed by "sudo update-grub" in Ubuntu and rebooted but am still seeing the same error. I'm a Docker noob and will need help if the edit needs to be made within Centos. Thanks.

Hi, I had the same problem, I am running Ubuntu 18.04 on WSL2. I tried the steps to enable vsyscall=emulate as mentioned here: microsoft/WSL#4694, which is to have a .wslconfig file with the following lines:

[wsl2]
kernelCommandLine = vsyscall=emulate

This worked for me, I am now able to build the Openlane docker in Ubuntu on WSL2.

[agorararmard]

@RTimothyEdwards, @bzboi, and @nurirfansyah: We have migrated from using centos6 to centos7 in openlane master. We also provided an alternative for building the docker locally, pulling a pre-built image from dockerhub. Does this help close this long-standing issue?

[donn]

Given that people haven't complained in a while, I'm going to assume this issue is resolved.