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Event Groups: snapshot xEventGroupSetBits returning value while in vTaskSuspendAll (#1143)

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Event Groups: snapshot xEventGroupSetBits returning value while in
vTaskSuspendAll. Fixes uxEventBits dereference after event group
deleted by higher priority thread.
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あく 2024-09-11 18:37:08 +01:00 • committed by GitHub
parent d806240dfe
commit d3052f1f50
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2 changed files with 11 additions and 11 deletions
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9
event_groups.c
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@ -551,7 +551,7 @@
ListItem_t * pxNext;
ListItem_t const * pxListEnd;
List_t const * pxList;
EventBits_t uxBitsToClear = 0, uxBitsWaitedFor, uxControlBits;
EventBits_t uxBitsToClear = 0, uxBitsWaitedFor, uxControlBits, uxReturnBits;
EventGroup_t * pxEventBits = xEventGroup;
BaseType_t xMatchFound = pdFALSE;
@ -635,12 +635,15 @@
/* Clear any bits that matched when the eventCLEAR_EVENTS_ON_EXIT_BIT
* bit was set in the control word. */
pxEventBits->uxEventBits &= ~uxBitsToClear;
/* Snapshot resulting bits. */
uxReturnBits = pxEventBits->uxEventBits;
}
( void ) xTaskResumeAll();
traceRETURN_xEventGroupSetBits( pxEventBits->uxEventBits );
traceRETURN_xEventGroupSetBits( uxReturnBits );
return pxEventBits->uxEventBits;
return uxReturnBits;
}
/*-----------------------------------------------------------*/