gh-151763: Fix crash in PyList_New() on allocation failure under low memory#154019
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gh-151763: Fix crash in PyList_New() on allocation failure under low memory#154019Abhi210 wants to merge 3 commits into
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| } | ||
| else { | ||
| op->ob_item = NULL; | ||
| Py_SET_SIZE(op, 0); |
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The following two commands are safe, IIUC.
Suggested change
| Py_SET_SIZE(op, 0); | |
| op->allocated = 0; | |
| Py_SET_SIZE(op, size); |
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And then we can remove this Py_SET_SIZE.
| else { | ||
| op->ob_item = NULL; | ||
| Py_SET_SIZE(op, 0); | ||
| op->allocated = 0; |
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Suggested change
| op->allocated = 0; |
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So, for clarification, should I make the following changes?
+ op->ob_item = NULL;
- Py_SET_SIZE(op, 0);
- op->allocated = 0;And keep the Py_SET_SIZE(op, size); at the end?
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If we call Py_SET_SIZE(op, size); at the top, then we don't need to repeat it at the bottom, IIUC.
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I have made the suggested changes by putting Py_SET_SIZE(op, 0); and op->allocated = 0;. The reproduction script runs successfully without any crash.
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Fixes gh-152125 (one of the OOM-injection fuzzing findings tracked under the gh-151763 umbrella).