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[3.14] gh-138661: fix data race in PyCode_Addr2Line (GH-138664) (#138834)

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gh-138661: fix data race in `PyCode_Addr2Line` (GH-138664)
(cherry picked from commit ea26f6da39)

Co-authored-by: Kumar Aditya <kumaraditya@python.org>
This commit is contained in:
Miss Islington (bot) 2025-10-07 20:06:45 +02:00 • committed by GitHub
parent 98d33bf19c
commit bfcd5f25a5
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GPG key ID: B5690EEEBB952194
3 changed files with 15 additions and 3 deletions
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2
Include/internal/pycore_code.h
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@ -274,6 +274,8 @@ extern void _PyLineTable_InitAddressRange(
/** API for traversing the line number table. */
extern int _PyLineTable_NextAddressRange(PyCodeAddressRange *range);
extern int _PyLineTable_PreviousAddressRange(PyCodeAddressRange *range);
// This is used in dump_frame() in traceback.c without an attached tstate.
extern int _PyCode_Addr2LineNoTstate(PyCodeObject *co, int addr);
/** API for executors */
extern void _PyCode_Clear_Executors(PyCodeObject *code);

12
Objects/codeobject.c
View file

@ -1014,7 +1014,7 @@ PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno)
******************/
int
PyCode_Addr2Line(PyCodeObject *co, int addrq)
_PyCode_Addr2LineNoTstate(PyCodeObject *co, int addrq)
{
if (addrq < 0) {
return co->co_firstlineno;
@ -1028,6 +1028,16 @@ PyCode_Addr2Line(PyCodeObject *co, int addrq)
return _PyCode_CheckLineNumber(addrq, &bounds);
}
int
PyCode_Addr2Line(PyCodeObject *co, int addrq)
{
int lineno;
Py_BEGIN_CRITICAL_SECTION(co);
lineno = _PyCode_Addr2LineNoTstate(co, addrq);
Py_END_CRITICAL_SECTION();
return lineno;
}
void
_PyLineTable_InitAddressRange(const char *linetable, Py_ssize_t length, int firstlineno, PyCodeAddressRange *range)
{

4
Python/traceback.c
View file

@ -994,8 +994,8 @@ dump_frame(int fd, _PyInterpreterFrame *frame)
} else {
PUTS(fd, "???");
}
int lineno = PyUnstable_InterpreterFrame_GetLine(frame);
int lasti = PyUnstable_InterpreterFrame_GetLasti(frame);
int lineno = _PyCode_Addr2LineNoTstate(code, lasti);
PUTS(fd, ", line ");
if (lineno >= 0) {
_Py_DumpDecimal(fd, (size_t)lineno);