`_remote_debugging`: No frame limit in `get_async_stack_trace()` · Issue #153364 · python/cpython · GitHub

Bug report

Bug description:

We've got it in process_frame_chain():

cpython/Modules/_remote_debugging/frames.c

Lines 308 to 326 in 548c731

    
           const size_t MAX_FRAMES = 1024 + 512; 
        
           size_t frame_count = 0; 
        
           assert(MAX_FRAMES > 0 && MAX_FRAMES < 10000); 
        
           ctx->stopped_at_cached_frame = 0; 
        
           ctx->last_frame_visited = 0; 
        
           while ((void*)frame_addr != NULL) { 
        
               PyObject *frame = NULL; 
        
               uintptr_t next_frame_addr = 0; 
        
               uintptr_t stackpointer = 0; 
        
               last_frame_addr = frame_addr; 
        
               if (++frame_count > MAX_FRAMES) { 
        
                   PyErr_SetString(PyExc_RuntimeError, "Too many stack frames (possible infinite loop)"); 
        
                   set_exception_cause(unwinder, PyExc_RuntimeError, "Frame chain iteration limit exceeded"); 
        
                   return -1; 
        
               } 
        
               assert(frame_count <= MAX_FRAMES);

There's no such limit in parse_async_frame_chain():

cpython/Modules/_remote_debugging/asyncio.c

Line 937 in c843cb7

process_running_task_chain(

cpython/Modules/_remote_debugging/asyncio.c

Line 767 in c843cb7

parse_async_frame_chain(

cpython/Modules/_remote_debugging/asyncio.c

Line 989 in c843cb7

process_thread_for_async_stack_trace(

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS

Linked PRs

gh-153364: Make frame, coroutine, and task-waiter chain walks iterati…

[3.15] gh-153364: Make frame, coroutine, and task-waiter chain walks …

[3.14] gh-153364: Make frame, coroutine, and task-waiter chain walks …

Revert "[3.15] pythongh-153364: Make frame, coroutine, and task-waite…

[3.15] Restore deferred backports for 3.15.1, including GH-158874 (#1…

`_remote_debugging`: No frame limit in `get_async_stack_trace()` · Issue #153364 · python/cpython · GitHub

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_remote_debugging: No frame limit in get_async_stack_trace() #153364

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	const size_t MAX_FRAMES = 1024 + 512;
	size_t frame_count = 0;
	assert(MAX_FRAMES > 0 && MAX_FRAMES < 10000);

	ctx->stopped_at_cached_frame = 0;
	ctx->last_frame_visited = 0;

	while ((void*)frame_addr != NULL) {
	PyObject *frame = NULL;
	uintptr_t next_frame_addr = 0;
	uintptr_t stackpointer = 0;
	last_frame_addr = frame_addr;

	if (++frame_count > MAX_FRAMES) {
	PyErr_SetString(PyExc_RuntimeError, "Too many stack frames (possible infinite loop)");
	set_exception_cause(unwinder, PyExc_RuntimeError, "Frame chain iteration limit exceeded");
	return -1;
	}
	assert(frame_count <= MAX_FRAMES);

`_remote_debugging`: No frame limit in `get_async_stack_trace()` · Issue #153364 · python/cpython · GitHub

Repository navigation

_remote_debugging: No frame limit in get_async_stack_trace() #153364

Description

Bug report

Bug description:

CPython versions tested on:

Operating systems tested on:

Linked PRs

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Metadata

Metadata

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