OSX: memory_maps() segfaults or raise EINVAL

[wrishel]

I get Exception: OSError(22, 'Invalid argument') on OSX 10.13.4 with Python 2.7

Adding this to the loop makes it go away:

for proc in psutil.process_iter():
        if proc.pid == os.getpid(): continue   

[giampaolo]

Please paste the full trace back

On Sun, 10 Jun 2018 at 06:59, wrishel ***@***.***> wrote: I get Exception: OSError(22, 'Invalid argument') on OSX 10.13.4 with Python 2.7 Adding this to the loop makes it go away: for proc in psutil.process_iter(): if proc.pid == os.getpid(): continue — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#1291>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAplLAXf0fJCzEADUoq4gBchk7p8xiSSks5t7KeegaJpZM4UhlYK> .

-- Giampaolo - http://grodola.blogspot.com

[wrishel]

Giampaolo, here is the full traceback. I'm embarrassed that I didn't think to do this in the first place.

As always I appreciate how promptly you reply.

Wes

psutil-debug> proc_regionfilename() failed
Traceback (most recent call last):
  File "/Users/Wes/Dropbox/Programming/Python/etpruncnt2.1/lib/gen/queue_coordinator/kill_coordinator.py", line 39, in <module>
    coords = find_all_coordinators()
  File "/Users/Wes/Dropbox/Programming/Python/etpruncnt2.1/lib/gen/queue_coordinator/kill_coordinator.py", line 22, in find_all_coordinators
    pinfo = proc.as_dict()
  File "/Users/Wes/.virtualenvs/ppyy/lib/python2.7/site-packages/psutil/__init__.py", line 527, in as_dict
    ret = meth()
  File "/Users/Wes/.virtualenvs/ppyy/lib/python2.7/site-packages/psutil/__init__.py", line 1112, in memory_maps
    it = self._proc.memory_maps()
  File "/Users/Wes/.virtualenvs/ppyy/lib/python2.7/site-packages/psutil/_psosx.py", line 330, in wrapper
    return fun(self, *args, **kwargs)
  File "/Users/Wes/.virtualenvs/ppyy/lib/python2.7/site-packages/psutil/_psosx.py", line 571, in memory_maps
    return cext.proc_memory_maps(self.pid)
OSError: [Errno 22] Invalid argument

[giampaolo]

Duplicate of #1209.

[wiggin15]

@giampaolo I'm still getting this with the latest code. #1209 seems to deal with zombie processes and task_for_pid but this issue seems to be about the running process and proc_regionfilename:

~ python -c "import psutil; print psutil.Process().memory_maps()"
psutil-debug> proc_regionfilename() failed
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Users/arnony/git/external/psutil/psutil/__init__.py", line 1111, in memory_maps
    it = self._proc.memory_maps()
  File "/Users/arnony/git/external/psutil/psutil/_psosx.py", line 476, in wrapper
    return fun(self, *args, **kwargs)
  File "/Users/arnony/git/external/psutil/psutil/_psosx.py", line 717, in memory_maps
    return cext.proc_memory_maps(self.pid)
OSError: [Errno 22] Invalid argument

Please consider reopening this issue.

This fails multiple tests when running make test and I'm even getting a segfault at test_memory_maps. There are some things about the implementation of memory_maps on macOS that don't look right, for example:

• if info.is_submap is True, we increase the depth but also increase the address later in the loop, instead of querying the same address with the increased depth
• We don't really handle the case where vm_region_recurse_64 returns != KERN_SUCCESS. We only print a debug log and continue.
• There is an if that checks ((sizeof(buf)) <= 0 - but sizeof(buf) is constant.

I wrote a small program that goes over the memory mapping to see where the problem is here. I'm also getting "errno 22" on the last regions.

[giampaolo]

Mmm segfault is not good. I'm not familiar with that code:
cf18ae528
@whitlockjc Jeremy, any idea?

[giampaolo]

What's even worse this time is that travis nor I can reproduce it. :-\