New submission from Zach Riggle: The attached script hits some "This should never happen" code in the subprocess module.
These lines here: https://github.com/python/cpython/blob/2.7/Lib/subprocess.py#L1036-L1038 The root cause is a lack of checking WIFSTOPPED and WSTOPSIG in the handler. When a process elects into being ptraced via PTRACE_TRACEME, it is stopped on the SIGSEGV instead of terminating, allowing the user to attach a debugger before the kernel destroys the process. This bug makes it impossible to wait on any process which crashes, which is set up to wait for a debugger. ---------- components: Library (Lib) files: bug.py messages: 285921 nosy: Zach Riggle priority: normal severity: normal status: open title: Python 2.7 subprocess module does not check WIFSTOPPED on SIGCHLD versions: Python 2.7 Added file: http://bugs.python.org/file46363/bug.py _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue29335> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
