[Bug 2149759] [NEW] Crash on termux proot distro

[shemgp]

Public bug reported:

Tried to upgrade Ubuntu Noble to Resolute dev using do-release-upgrade
-d inside proot-distro inside termux on an Android 14 OS with 4.19 Linux
kernel and it crashed with the error below. Looking at the code, I
believe it lacks a try and except continue on the utils.py while opening
the /proc/%s/stat

Traceback (most recent call last):                                                         File "/tmp/ubuntu-release-upgrader-ipjerrcr/resolute", line 8, in <module>                 sys.exit(main())                                                                                  ^^^^^^                                                                        File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/DistUpgradeMain.py", line 235, in main                                                                                      if app.run():
       ^^^^^^^^^                                                                           File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/DistUpgradeController.py", line 1985, in run
    return self.fullUpgrade()
           ^^^^^^^^^^^^^^^^^^
  File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/DistUpgradeController.py", line 1799, in fullUpgrade                                                                        if not self.prepare():                                                                          ^^^^^^^^^^^^^^
  File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/DistUpgradeController.py", line 449, in prepare                                                                             self._sshMagic()                                                                       File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/DistUpgradeController.py", line 351, in _sshMagic                                                                           is_child_of_process_name("sshd")):                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                                       File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/utils.py", line 108, in is_child_of_process_name                                                                            with open(stat_file) as stat_f:                                                               ^^^^^^^^^^^^^^^                                                                 FileNotFoundError: [Errno 2] No such file or directory: '/proc/727/stat'

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2149759

Title:
  Crash on termux proot distro

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Tried to upgrade Ubuntu Noble to Resolute dev using do-release-upgrade
  -d inside proot-distro inside termux on an Android 14 OS with 4.19
  Linux kernel and it crashed with the error below. Looking at the code,
  I believe it lacks a try and except continue on the utils.py while
  opening the /proc/%s/stat

  Traceback (most recent call last):                                                         File "/tmp/ubuntu-release-upgrader-ipjerrcr/resolute", line 8, in <module>                 sys.exit(main())                                                                                  ^^^^^^                                                                        File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/DistUpgradeMain.py", line 235, in main                                                                                      if app.run():
         ^^^^^^^^^                                                                           File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/DistUpgradeController.py", line 1985, in run
      return self.fullUpgrade()
             ^^^^^^^^^^^^^^^^^^
    File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/DistUpgradeController.py", line 1799, in fullUpgrade                                                                        if not self.prepare():                                                                          ^^^^^^^^^^^^^^
    File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/DistUpgradeController.py", line 449, in prepare                                                                             self._sshMagic()                                                                       File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/DistUpgradeController.py", line 351, in _sshMagic                                                                           is_child_of_process_name("sshd")):                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                                       File "/tmp/ubuntu-release-upgrader-ipjerrcr/DistUpgrade/utils.py", line 108, in is_child_of_process_name                                                                            with open(stat_file) as stat_f:                                                               ^^^^^^^^^^^^^^^                                                                 FileNotFoundError: [Errno 2] No such file or directory: '/proc/727/stat'

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