Issue #19716 has been updated by alexdowad (Alex Dowad). I just applied @ncopa's patch from: https://bugs.ruby-lang.org/attachments/download/7081/0001-thread_pthread.c-m... After `make` and `make install`, I am now able to run `bundle exec rake db:migrate` normally. Commands used were:
wget -O 'thread-stack-fix.patch' 'https://bugs.ruby-lang.org/attachments/download/7081/0001-thread_pthread.c-m...' patch -p1 -i thread-stack-fix.patch rm thread-stack-fix.patch make make install
---------------------------------------- Bug #19716: SystemStackError occurs too easily on Alpine Linux (due to small stack size reported by pthread_attr_getstacksize on musl libc) https://bugs.ruby-lang.org/issues/19716#change-103431 * Author: alexdowad (Alex Dowad) * Status: Open * Priority: Normal * ruby -v: ruby 3.1.4p223 (2023-03-30 revision 957bb7cb81) [x86_64-linux-musl] * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN ---------------------------------------- This is the same problem previously reported against Ruby 2.5 in https://bugs.ruby-lang.org/issues/14387. I just ran into the same problem on Ruby 3.1.4, built on Alpine Linux 3.16. @hsbt stated in the previous thread (https://bugs.ruby-lang.org/issues/14387#note-28):
If you have this issue with Ruby 3.2, please file it with another issue.
I hacked `stack_check` in gc.c to print the values of `STACK_START` and `STACK_END` on stack overflow; on the Alpine 3.16 host where this problem just occurred, the values printed were:
Start=0x7ffd0bf4f000, End=0x7ffd0bf32530
...which shows that Ruby thinks the stack size is only 131072 bytes. On the other hand, `ulimit -s` shows a stack size limit of 8192kb. This Ruby 3.1.4 was built from unmodified source code downloaded from https://cache.ruby-lang.org; the build was configured using `CFLAGS='-march=native' ./configure --disable-install-doc`. The invocation of Ruby which blew the stack was `bundle exec rake db:migrate`, on a mid-sized Rails project. Regarding @ncopa's patch from #14387, @wanabe listed some things which should be done before it is merged into mainline Ruby:
Okay, The patch needs one or more proofs of its behaviour, like that:
Original issue [ruby-dev:50421] has gone away. Standard test codes run well. test-all ruby/spec getrlimit works on some situations like: on single thread with multiple threads with RLIMIT_STACK environment variable getrlimit code of musl is implemented correctly as expected. (But It's doubtful whether it can be. I guess that a proof of code soundness is very difficult.) Some "real world" applications can work. I think it is better example that that application(s) can't work without the patch.
I am happy to help cover some of these points if the Ruby development team is still interested in merging @ncopa's patch. -- https://bugs.ruby-lang.org/