[Bug 2150073] Re: sudo‑rs causes apt-get (install or upgrade)to be stopped (T+) in a non‑interactive SSH session

[Simon Johnsson]

Hi there KJ LAU! Thanks for the bug report and for helping make Ubuntu
better.

I have tried reproducing your error, but am having trouble reaching the
same state. Would you mind sharing how you are invoking sudo and how you
are authenticating? Are there any modifications to /etc/sudoers in
place?

If you provide minimal reproducible steps that would be very helpful.

Cheers,
Simon

** Changed in: rust-sudo-rs (Ubuntu)
       Status: New => Incomplete

** Changed in: rust-sudo-rs (Ubuntu)
     Assignee: (unassigned) => Simon Johnsson (bamf0)

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https://bugs.launchpad.net/bugs/2150073

Title:
  sudo‑rs causes apt-get (install or upgrade)to be stopped (T+) in a
  non‑interactive SSH session

Status in rust-sudo-rs package in Ubuntu:
  Incomplete

Bug description:
  On Ubuntu 26.04 (where /usr/bin/sudo is implemented via sudo-rs), running apt-get upgrade or install under sudo from a non‑interactive SSH + Expect‑driven environment causes the apt-get process to enter a T+ (stopped) state due to do_signal_stop(), causing the installation to hang indefinitely.
  This problem does not reproduce when replacing sudo-rs with classic sudo (sudo.ws) under identical conditions.

  High level flow:

  Host OS (launcher):
    Ubuntu 22.04 LTS

  Guest OS (QEMU VM):
    Ubuntu 26.04 (daily / pre‑release)

  user at localhost:~$ sudo --version
  sudo-rs 0.2.13-0ubuntu1

  sudo implementation:
    - Failing: sudo-rs (default sudo in Ubuntu 26.04)
    - Working: classic sudo (sudo.ws)

  Invocation context:
    SSH non‑interactive session
    Command chain driven via shell script + Expect
    No human‑attached TTY inside the guest

  Guest OS debug information:

  sudo ps -eo pid,ppid,stat,wchan:32,cmd | egrep 'apt|dpkg|ldconfig' | grep -v grep
     8809    7947 T+   do_signal_stop                   apt-get upgrade -y

  pstree -ap output:

    ├─sshd,3270
    │   ├─sshd-session,3757
    │   │   └─sshd-session,3793
    │   │       └─bash,3799
    │   │           ├─sudo,3960 ./installer.sh ASL default
    │   │           │   └─sudo,3964 ./installer.sh ASL default
    │   │           │       └─installer.sh,3966 /home/user/installer.sh ASL default
    │   │           │           ├─installer.sh,7947 /home/user/installer.sh ASL default
    │   │           │           │   └─apt-get,8809 upgrade -y
    │   │           │           └─tee,7948 -a /home/user/cbkc_output.log
    │   │           └─tee,3961 installer_logs.txt

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