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BUG: Prevent free'ing uninitialized pointer in DeviceEvents #2047

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Merged
leofang merged 1 commit into from
May 7, 2026
+4 −1
Merged

BUG: Prevent free'ing uninitialized pointer in DeviceEvents #2047

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5 changes: 4 additions & 1 deletion cuda_core/cuda/core/system/_event.pxi
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Original file line number Diff line number Diff line change
Expand Up @@ -125,6 +125,8 @@ cdef class DeviceEvents:
cdef intptr_t _device_handle

def __init__(self, device_handle: intptr_t, events: EventType | str | list[EventType | str]):
self._event_set = 0

cdef unsigned long long event_bitmask
if isinstance(events, (str, EventType)):
events = [events]
Expand All @@ -150,7 +152,8 @@ cdef class DeviceEvents:
nvml.device_register_events(self._device_handle, event_bitmask, self._event_set)

def __dealloc__(self):
nvml.event_set_free(self._event_set)
if self._event_set != 0:
nvml.event_set_free(self._event_set)

def wait(self, timeout_ms: int = 0) -> EventData:
"""
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