gh-137185: Fix _Py_DumpStack() async signal safety
#137187
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Call backtrace() once when installing the signal handler to ensure that libgcc is dynamically loaded outside the signal handler. This fixes a "signal-unsafe call inside of a signal" TSan error from test_faulthandler.test_enable_fd.
gpshead
approved these changes
Jul 29, 2025
|
Thanks @colesbury for the PR 🌮🎉.. I'm working now to backport this PR to: 3.14. |
miss-islington
pushed a commit
to miss-islington/cpython
that referenced
this pull request
Jul 29, 2025
…137187) Call backtrace() once when installing the signal handler to ensure that libgcc is dynamically loaded outside the signal handler. This fixes a "signal-unsafe call inside of a signal" TSan error from test_faulthandler.test_enable_fd. (cherry picked from commit 11a8652) Co-authored-by: Sam Gross <[email protected]>
|
GH-137206 is a backport of this pull request to the 3.14 branch. |
Agent-Hellboy
pushed a commit
to Agent-Hellboy/cpython
that referenced
this pull request
Aug 19, 2025
…137187) Call backtrace() once when installing the signal handler to ensure that libgcc is dynamically loaded outside the signal handler. This fixes a "signal-unsafe call inside of a signal" TSan error from test_faulthandler.test_enable_fd.
colesbury
added a commit
that referenced
this pull request
Oct 7, 2025
… (gh-137206) Call backtrace() once when installing the signal handler to ensure that libgcc is dynamically loaded outside the signal handler. This fixes a "signal-unsafe call inside of a signal" TSan error from test_faulthandler.test_enable_fd. (cherry picked from commit 11a8652) Co-authored-by: Sam Gross <[email protected]>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Call backtrace() once when installing the signal handler to ensure that libgcc is dynamically loaded outside the signal handler.
This fixes a "signal-unsafe call inside of a signal" TSan error from test_faulthandler.test_enable_fd.
_Py_DumpStack()is not signal-safe the first time it's called #137185