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Error on security-hardened systems #72
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Hi, thanks for the report! Do you have more details about the system you're running? Then I can reproduce the issue and see what I can do.
…----- Original message -----
From: Alberto Mardegan <[email protected]>
To: FSX/misaka <[email protected]>
Cc: Subscribed <[email protected]>
Subject: [FSX/misaka] Error on security-hardened systems (#72)
Date: Friday, September 06, 2019 16:51
Hi!
I'm running isso (which depends on misaka) in dreamhost. Since a couple of months my isso CGI stopped working:
`$ ~/mardy.it/cgi-bin/isso.fcgi
Traceback (most recent call last):
File "/home/mardy/mardy.it/cgi-bin/isso.fcgi", line 7, in <module>
from isso import make_app
File "/home/mardy/isso/lib/python3.6/site-packages/isso/__init__.py", line 72, in <module>
from isso.utils import http, JSONRequest, html, hash
File "/home/mardy/isso/lib/python3.6/site-packages/isso/utils/html.py", line 6, in <module>
import misaka
File "/home/mardy/isso/lib/python3.6/site-packages/misaka/__init__.py", line 3, in <module>
from .api import *
File "/home/mardy/isso/lib/python3.6/site-packages/misaka/api.py", line 10, in <module>
from .callbacks import python_callbacks, to_string
File "/home/mardy/isso/lib/python3.6/site-packages/misaka/callbacks.py", line 8, in <module>
@ffi.callback('void(hoedown_buffer *ob, const hoedown_buffer *text, '
MemoryError: Cannot allocate write+execute memory for ffi.callback(). You might be running on a system that prevents this. For more information, see https://cffi.readthedocs.io/en/latest/using.html#callbacks
`
I understand that this will be eventually solved by #69 <#69>, but I wonder if you are aware of a quicker workaround to get things working?
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Not really, but the page linked in the error message has some informative recommendation:
For the time being, I've "fixed" the issue by making isso use mark3 instead of misaka, just on my own hosting. |
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Alright. I'll take a look at it once I get home. 👍
----- Original message -----
From: Alberto Mardegan <[email protected]>
To: FSX/misaka <[email protected]>
Cc: Frank <[email protected]>, Comment <[email protected]>
Subject: Re: [FSX/misaka] Error on security-hardened systems (#72)
Date: Friday, September 06, 2019 17:13
Hi, thanks for the report! Do you have more details about the system you're running? Then I can reproduce the issue and see what I can do.
Not really, but the page <https://cffi.readthedocs.io/en/latest/using.html#callbacks> linked in the error message has some informative recommendation:
To fix the issue once and for all on the affected platforms, you need to refactor the involved code so that it no longer uses ffi.callback().
For the time being, I've "fixed" the issue by making isso use mark3 instead of misaka, just on my own hosting.
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@mardy Can you give this branch https://github.com/FSX/misaka/tree/cffi-new-style-callbacks a try? |
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Wow, that was fast! Works like a charm :-) |
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Good. I'll make a release shortly (and then close this issue). |
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Hi!
I'm running isso (which depends on misaka) in dreamhost. Since a couple of months my isso CGI stopped working:
I understand that this will be eventually solved by #69, but I wonder if you are aware of a quicker workaround to get things working?
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