Mac M1 Ptrace - warning: ptrace: Function not implemented #5191
Description
Expected behavior
- Should be able to debug binary using gdb in Docker container.
- The same Dockerfile and commands work on my older x86-64 mac, so either there is an issue with ptrace on Docker preview for M1 macs, or I'm doing something wrong.
Actual behavior
- Cannot debug due to ptrace being unavailable with the below error:
gdb /bin/echo
> run
Starting program: /bin/echo
warning: Could not trace the inferior process.
warning: ptrace: Function not implemented
During startup program exited with code 127.
Information
- macOS Version: 11.1 (20C69)
- Docker for Mac Preview 20.10.0 / 0.0.0
- MacBook Pro (13-inch, M1, 2020)
- Container:
Linux b619d811f2eb 4.19.104-linuxkit #1 SMP PREEMPT Sat Feb 15 00:49:47 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Steps to reproduce the behavior
Dockerfile
FROM phusion/baseimage:master-amd64
ENV DEBIAN_FRONTEND noninteractive
RUN dpkg --add-architecture i386 && \
apt-get -y update && \
apt install -y \
vim \
python3-dev \
python3-pip \
build-essential \
strace \
ltrace \
nasm \
gdb \
netcat \
git \
zsh \
wget \
sudo \
tmux \
unzip
RUN pip3 install \
pwntools \
angr \
r2pipe
RUN git clone --depth 1 https://github.com/pwndbg/pwndbg && \
cd pwndbg && chmod +x setup.sh && ./setup.sh
WORKDIR /gdb/
RUN wget https://github.com/robbyrussell/oh-my-zsh/raw/master/tools/install.sh -O - | zsh || true
CMD ["/bin/zsh"]
Run command:
docker run --rm -v $PWD:/gdb --cap-add=SYS_PTRACE --security-opt seccomp=unconfined --security-opt apparmor=unconfined -d --name gdbdocker --privileged -i gdbdocker
docker exec -it --privileged gdbdocker /bin/zsh
I have also tried the following command inside Docker but it makes no difference:
echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope