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test_audit.test_sys_remote_exec() fails on Linux >= 5.17 #142627
Description
Bug report
Bug description:
Since "Annotate anonymous mmap usage if "-X dev" is used" change (commit), many tests started to fail on Linux buildbots building Python with --enable-shared. I can reproduce the issue on Ubuntu 24.04.
Example AMD64 Ubuntu Shared 3.x: https://buildbot.python.org/all/#/builders/506/builds/11959
5 tests failed:
test_audit test_external_inspection test_profiling test_remote_pdb
test_sys
Example:
test_sys_remote_exec (test.test_audit.AuditTest.test_sys_remote_exec) ... FAIL Stderr: Fatal Python error: _Py_CheckFunctionResult: a function returned a result with an exception set Python runtime state: initialized OSError: Cannot open ELF file '[anon:cpython:pymalloc]' 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 Current thread 0x00007f8388d70b80 [python] (most recent call first): File "/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/audit-tests.py", line 672 in test_sys_remote_exec File "/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/audit-tests.py", line 761 in <module> Extension modules: math.integer (total: 1)
CPython versions tested on:
CPython main branch
Operating systems tested on:
Linux
Activity
pythongh-142627: Ignore anonymous mappings in Linux remote debugging
vstinner commented on Dec 12, 2025
It's an issue in remote debugging which tries to locate the memory mapping of libpython by searching for the string "python" in /proc/pid/maps. New mappings such as "[anon:cpython:pymalloc]" are now matching, but there are anonymous mappings, not the libpython we are looking for.
Note: I cannot reproduce the issue on Fedora, since Fedora builds the Linux kernel without the CONFIG_ANON_VMA_NAME option.
gh-142627: Ignore anonymous mappings in Linux remote debugging (#142628)
pythongh-142627: Ignore anonymous mappings in Linux remote debugging (p…
[3.14] gh-142627: Ignore anonymous mappings in Linux remote debugging (…