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Description
Crash report
What happened?
Stack trace:
#0 tstate_delete_common.constprop.0 (tstate=tstate@entry=0x555555666ca0, release_gil=0) at ../Python/pystate.c:1854#1 0x00007ffff78cd341 in zapthreads (interp=0x7ffff74c8010) at ../Python/pystate.c:1915#2 PyInterpreterState_Delete (interp=0x7ffff74c8010) at ../Python/pystate.c:1016#3 0x00005555555552ef in main () at repro.c:16(note the address passed to tstate_delete_common is definitely corrupt, and not the address of any PyThreadState created in this program)
This was triggered by creating a new PyThreeadState for the interpreter, switching to it, deleting an old thread state for the same interpreter, and then calling Py_EndInterpreter (on the new thread state).
repro.c:
#include<Python.h>intmain(){Py_Initialize();PyThreadState*orig=NULL;PyInterpreterConfigcfg=_PyInterpreterConfig_INIT;Py_NewInterpreterFromConfig(&orig,&cfg);PyThreadState*temp=PyThreadState_New(orig->interp);PyThreadState_Swap(temp);PyThreadState_Clear(orig);PyThreadState_Delete(orig);Py_EndInterpreter(temp);Py_Finalize();}
Compiled with$ gcc -O1 -ggdb repro.cpp -I/usr/include/python3.14 -lpython3.14
CPython versions tested on:
3.14
Operating systems tested on:
Linux
Output from running 'python -VV' on the command line:
Python 3.14.0b1 (main, May 8 2025, 08:57:13) [GCC 13.3.0]
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