Non-unicode in /proc/mounts

[fingolfin0]

Upgrade crashes with UnicodeDecodeError:

Traceback (most recent call last):
  File "/usr/lib/linuxmint/mintupgrade/checks.py", line 94, in run
    self.do_run()
  File "/usr/lib/linuxmint/mintupgrade/checks.py", line 697, in do_run
    self.check_disk_space_requirements(cache)
  File "/usr/lib/linuxmint/mintupgrade/checks.py", line 741, in check_disk_space_requirements
    for line in mounts:
  File "<frozen codecs>", line 322, in decode
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb1 in position 1557: invalid start byte

Relevant code fragment (line 741):

        with open("/proc/mounts") as mounts:
            for line in mounts:
                try:
                    (what, where, fs, options, a, b) = line.split()
                except ValueError as e:
                    continue
                if not where in mounted:
                    mounted.append(where)

I found that my /proc/mounts contains a line like this: 0xB1екапируемый:0xBDебекапируемый /home/user fuse.mergerfs rw,rel… 0 0, where 0xB1 and 0xBD are raw bytes. Obviously, this is a mergerfs issue, but I decided to report it here anyway.

Versions

• mintupgrade: 2024.07.27.3
• mergerfs: 2.33.5-1ubuntu2