cannot allocate memory error during build

[dave-tucker]

A moby build test/test-ltp.yml from the linuxkit/linuxkit sometimes fails with:

Failed to create config.json for linuxkit/poweroff:961412b8ef5c5285de0d40ec076701d955eaa084: fork/exec /usr/bin/docker: cannot allocate memory`

It's not easy to reproduce and but has been seen a few times locally on Docker for Mac (edge) and also on our LinuxKitCI system

[justincormack]

Hmm, most of the forking of docker has gone away although there was one that is now reverted. I am also replacing it with containerd for most uses too, which will definitely fix this...

[justincormack]

Is this still happening?

[dave-tucker]

I think @rneugeba still saw some this happen when building the LTP tests with < 3.75 GB RAM allocated

[rn]

that was on GCP in a Debian VM and with some sysctls not set. That was fixed. You saw this on DfM, by the looks of it, which is different..

[justincormack]

Not reported since then, so closing.