[ruby-core:116628] [Ruby master Bug#20085] Fiber.new{ }.resume causes Segmentation fault for Ruby 3.3.0 on aarch64-linux

Issue #20085 has been updated by dorianmariefr (Dorian Mari=E9).





I can't deploy apps with Kamal (e.g. Docker) because of this crash



----------------------------------------

Bug #20085: Fiber.new{ }.resume causes Segmentation fault for Ruby 3.3.0 on=
 aarch64-linux

https://bugs.ruby-lang.org/issues/20085#change-106638



* Author: oleksii (Oleksii Leonov)

* Status: Closed

* Priority: Normal

* Assignee: katei (Yuta Saito)

* ruby -v: ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [aarch64-linux]

* Backport: 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED, 3.3: REQUIRED

----------------------------------------

```

ruby -e "Fiber.new{}.resume"



0.170 -e:1: [BUG] Segmentation fault at 0x0036ffffb4f110f0

0.170 ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [aarch64-linux]

0.170=20

0.170 -- Control frame information ----------------------------------------=
-------

0.170 c:0003 p:---- s:0010 e:000009 CFUNC  :resume

0.170 c:0002 p:0007 s:0006 E:0005e0 EVAL   -e:1 [FINISH]

0.170 c:0001 p:0000 s:0003 E:000b50 DUMMY  [FINISH]

0.170=20

0.170 -- Ruby level backtrace information ---------------------------------=
-------

0.170 -e:1:in `<main>'

0.170 -e:1:in `resume'

0.170=20

0.170 -- Threading information --------------------------------------------=
-------

0.170 Total ractor count: 1

0.170 Ruby thread count for this ractor: 1

0.170=20

0.170 -- Machine register context -----------------------------------------=
-------

0.170   x0: 0x0000aaab11b4f570  x1: 0x0000aaab11de4a40  x2: 0x0000ffffe5571=
990

0.170   x3: 0x0000ffff9ac5ff60  x4: 0x0000ffff9ac60018  x5: 0x0000ffff9ac80=
000

0.170   x6: 0x0000ffffb5458b88  x7: 0x0000000000000000 x18: 0x00000000007ff=
fff

0.170  x19: 0x0000000000000000 x20: 0x0000000000000000 x21: 0x0000000000000=
000

0.170  x22: 0x0000000000000000 x23: 0x0000000000000000 x24: 0x0000000000000=
000

0.170  x25: 0x0000000000000000 x26: 0x0000000000000000 x27: 0x0000000000000=
000

0.170  x28: 0x0000000000000000 x29: 0x0000000000000000  sp: 0x0000ffff9ac60=
000

0.170  fau: 0x0036ffffb4f110f0

0.170=20

0.170 -- C level backtrace information ------------------------------------=
-------

0.171 Segmentation fault

```



- Ruby 3.3.0-rc1 and 3.2.2 work without Segmentation fault on both amd64 an=
d arm64.

- Ruby 3.3.0 works on amd64, but fails with Segmentation fault on arm64 (aa=
rch64-linux) on Ubuntu 22.04 and Debian Bookworm.



Dockerfile to reproduce:

```

FROM debian:bookworm



# Set UTF-8 locale by default.

ENV RBENV_ROOT=3D/usr/local/rbenv \

    PATH=3D/usr/local/rbenv/bin:/usr/local/rbenv/shims:$PATH



RUN ( \

  export DEBIAN_FRONTEND=3Dnoninteractive \

  && apt-get update \

  && apt-get install -y --no-install-recommends \

        ca-certificates curl git \

        # standard dependencies for rbenv

        autoconf \

        patch \

        build-essential \

        rustc \

        libssl-dev \

        libyaml-dev \

        libreadline6-dev \

        zlib1g-dev \

        libgmp-dev \

        libncurses5-dev \

        libffi-dev \

        libgdbm6 \

        libgdbm-dev \

        libdb-dev \

        uuid-dev \

  )



ENV RBENV_VERSION=3D3.3.0



RUN ( \

  export DEBIAN_FRONTEND=3Dnoninteractive \

  # Install rbenv & ruby-build

  && git clone https://github.com/rbenv/rbenv.git /usr/local/rbenv \

  && git clone https://github.com/rbenv/ruby-build.git /usr/local/rbenv/plu=
gins/ruby-build \

  && /usr/local/rbenv/plugins/ruby-build/install.sh \

  && echo 'export RBENV_ROOT=3D/usr/local/rbenv' >> /etc/profile.d/rbenv.sh=
 \

  && echo 'export PATH=3D/usr/local/rbenv/bin:$PATH' >> /etc/profile.d/rben=
v.sh \

  && echo 'eval "$(rbenv init -)"' >> /etc/profile.d/rbenv.sh \

  && echo 'export RBENV_ROOT=3D/usr/local/rbenv' >> /root/.bashrc \

  && echo 'export PATH=3D/usr/local/rbenv/bin:$PATH' >> /root/.bashrc \

  && echo 'eval "$(rbenv init -)"' >> /root/.bashrc \

  && eval "$(rbenv init -)"; rbenv install $RBENV_VERSION \

  && eval "$(rbenv init -)"; rbenv global $RBENV_VERSION \

  )



RUN=20



RUN ruby -e "Fiber.new{}.resume"

```



`docker build --platform linux/arm64 .`



---Files--------------------------------

Dockerfile (1.53 KB)





--=20

https://bugs.ruby-lang.org/

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