node spins forever?

[rotu]

npm seems to cause the process to spin forever.

This happens with every alpine version from 3.19.0 through edge and may be related to running ARM32 emulation on a 64-bit processor.

docker run --platform=linux/arm -it --rm alpine:3.21.2 ash -c 'apk add nodejs npm && npm --version'

[rotu]

This appears to be the same issue as nodejs/docker-node#1946.

[fossdd]

For me it seems to work. It seems like a really not-nice random bug in npm.

➜  ~ podman run --platform=linux/arm -it --rm alpine:3.21.2 ash -c 'apk add nodejs npm && npm --version'      
Resolved "alpine" as an alias (/etc/containers/registries.conf.d/00-shortnames.conf)
Trying to pull docker.io/library/alpine:3.21.2...
Getting image source signatures
Copying blob 824bc99f06f2 done   | 
Copying config f5d8035bc4 done   | 
Writing manifest to image destination
fetch https://dl-cdn.alpinelinux.org/alpine/v3.21/main/armv7/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.21/community/armv7/APKINDEX.tar.gz
(1/14) Installing ca-certificates (20241121-r1)
(2/14) Installing libgcc (14.2.0-r4)
(3/14) Installing libstdc++ (14.2.0-r4)
(4/14) Installing ada-libs (2.9.2-r1)
(5/14) Installing brotli-libs (1.1.0-r2)
(6/14) Installing c-ares (1.34.3-r0)
(7/14) Installing icu-data-en (74.2-r0)
Executing icu-data-en-74.2-r0.post-install
*
* If you need ICU with non-English locales and legacy charset support, install
* package icu-data-full.
*
(8/14) Installing icu-libs (74.2-r0)
(9/14) Installing nghttp2-libs (1.64.0-r0)
(10/14) Installing simdjson (3.10.1-r0)
(11/14) Installing simdutf (5.6.3-r0)
(12/14) Installing sqlite-libs (3.47.1-r0)
(13/14) Installing nodejs (22.11.0-r1)
(14/14) Installing npm (10.9.1-r0)
Executing busybox-1.37.0-r9.trigger
Executing ca-certificates-20241121-r1.trigger
OK: 64 MiB in 29 packages
10.9.1
➜  ~ 

[rotu]

Okay I'm sufficiently confused by lots of things when trying to reliably reproduce this.

I was counfounded by https://gitlab.alpinelinux.org/alpine/aports/-/issues/16400; installing npm installs nodejs-current not nodejs. These versions differ on alpine 3.18. This was changed in 3.21 where apk add npm install nodejs instead of nodejs-current. So the issue began sometime between Node 18.20.1 and Node 20.8.1.

It seems I can reproduce this even on 3.18 when using nodejs-current instead of nodejs and without npm at all. The common strand is emulating 32-bit ARM. Even

docker run --platform=linux/arm --rm -it alpine:3.18 ash -c 'apk add nodejs-current && node --print 42'

It also pegs one CPU at 100% while it's happening.

I found this to happen on both my M3 Mac and my x64 Windows computer running Docker. The common thread is arm/v6 or arm/v7 emulation. This does not happen with arm64/v8 on either machine.

[rotu]

This is a duplicate of nodejs/node#53489. Confirmed by running with strace:

$ docker run --platform=linux/arm --rm -e QEMU_STRACE=1 -it alpine:edge ash -c 'apk add nodejs-current && node -p 42'

which eventually gets into printing these messages:

1 mremap(940810240,4096,8192,0,0,1082132616) = -1 errno=12 (Out of memory)
1 mremap(940806144,4096,8192,0,0,1082132616) = -1 errno=12 (Out of memory)
1 mremap(940802048,4096,8192,0,0,1082132616) = -1 errno=12 (Out of memory)