SystemError: <built-in function remote_exec> returned a result with an exception set

[godlygeek]

Bug report

Bug description:

While testing with sys.remote_exec today I got this error:

OSError: Cannot open ELF file '/home/godlygeek/repos/memray/src/memray/_memray.cpython-314-x86_64-linux-gnu.so (deleted)' for section 'PyRuntime' search: No such file or directory

The above exception was the direct cause of the following exception:
...
SystemError: <built-in function remote_exec> returned a result with an exception set

The root cause is that sys.remote_exec can return a result with an exception set if it fails to open one or more mapped files while searching for the mapping that contains PyRuntime, but eventually successfully reads the file that does contain PyRuntime.

We either need to stop setting exceptions inside search_linux_map_for_section entirely, or print and clear them with PyErr_Print before continuing on with the search.

I'll contribute a fix tomorrow unless someone beats me to it.

CPython versions tested on:

3.14

Operating systems tested on:

Linux

Linked PRs

• gh-137293: Ignore Exceptions when searching ELF File in Remote Debug #137309