diff options
Diffstat (limited to 'Modules/socketmodule.c')
| -rw-r--r-- | Modules/socketmodule.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c index 66e52f84eb..0ae280f298 100644 --- a/Modules/socketmodule.c +++ b/Modules/socketmodule.c @@ -102,6 +102,10 @@ Local naming conventions: #include "Python.h" #include "structmember.h" +#ifdef _Py_MEMORY_SANITIZER +# include <sanitizer/msan_interface.h> +#endif + /* Socket object documentation */ PyDoc_STRVAR(sock_doc, "socket(family=AF_INET, type=SOCK_STREAM, proto=0) -> socket object\n\ @@ -6571,7 +6575,23 @@ socket_if_nameindex(PyObject *self, PyObject *arg) return NULL; } +#ifdef _Py_MEMORY_SANITIZER + __msan_unpoison(ni, sizeof(ni)); + __msan_unpoison(&ni[0], sizeof(ni[0])); +#endif for (i = 0; ni[i].if_index != 0 && i < INT_MAX; i++) { +#ifdef _Py_MEMORY_SANITIZER + /* This one isn't the end sentinel, the next one must exist. */ + __msan_unpoison(&ni[i+1], sizeof(ni[0])); + /* Otherwise Py_BuildValue internals are flagged by MSan when + they access the not-msan-tracked if_name string data. */ + { + char *to_sanitize = ni[i].if_name; + do { + __msan_unpoison(to_sanitize, 1); + } while (*to_sanitize++ != '\0'); + } +#endif PyObject *ni_tuple = Py_BuildValue("IO&", ni[i].if_index, PyUnicode_DecodeFSDefault, ni[i].if_name); |