Error when setting LD_PRELOAD env variable

[danielwestendorf]

Came here after reading https://www.speedshop.co/2017/12/04/malloc-doubles-ruby-memory.html

Using Ruby version: ruby-2.4.2

ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.

This is after heroku buildpacks:add --index 1 https://github.com/mojodna/heroku-buildpack-jemalloc.git, setting the ENV variable LD_PRELOAD to /app/vendor/jemalloc/lib/libjemalloc.so.1 and pushing a new commit.

$ g push staging
Counting objects: 331, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (315/315), done.
Writing objects: 100% (331/331), 49.54 KiB | 3.30 MiB/s, done.
Total 331 (delta 209), reused 0 (delta 0)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> jemalloc app detected
remote: -----> Vendoring binaries
remote:        Fetching https://github.com/mojodna/heroku-buildpack-jemalloc/releases/download/4.2.1/jemalloc-4.2.1-1.tar.gz
remote: -----> Configuring build environment
remote: -----> Building runtime environment
remote: -----> SSH private key app detected
remote: -----> Running SSH private key setup
remote:        Warning: Permanently added 'github.com,192.30.253.113' (RSA) to the list of known hosts.
remote:        Hi bacbholdings/cuckoo-ruby! You've successfully authenticated, but GitHub does not provide shell access.
remote: -----> wkhtmltopdf-buildpack app detected
remote: -----> Using wkhtmltopdf tar from cache
remote: -----> Unpacking tar
remote: -----> Setting permissions
remote: -----> Moving binaries to the right place
remote: -----> Cleaning up
remote: -----> Installing fonts
remote: wqy-microhei.ttc
remote: wqy-zenhei.ttc
remote: -----> Ruby app detected
remote: -----> Compiling Ruby/Rails
remote: -----> Using Ruby version: ruby-2.4.2
remote: ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote: ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote: -----> Installing dependencies using bundler 1.15.2
remote:        Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        Warning: the running version of Bundler (1.15.2) is older than the version that created the lockfile (1.16.0.pre.2). We suggest you upgrade to the latest version of Bundler by running `gem install bundler --pre`.
remote:        Fetching gem metadata from https://rubygems.org/..........
remote:        Fetching version metadata from https://rubygems.org/..
remote:        Fetching dependency metadata from https://rubygems.org/.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
remote:        ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
...

I'll switch to using jemalloc.sh instead.

[nateberkopec]

Which version of the Heroku stack was this?

[danielwestendorf]

It's the heroku-16 stack

[stevegrossi]

I'm seeing the same issue on the heroku-18 stack as well:

ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/app/vendor/jemalloc/lib/libjemalloc.so.1' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
...