xPendingReadyList is crashed in FreeRTOS on RM57L843ZWT

user3721557

Other Parts Discussed in Thread: HALCOGEN

The FreeRTOS is generatd by HALCoGEN 4.6.1 and so its version is 8.2.0.

The system has been running for a while (several minutes) and then crashed. The location crashed is in the function xTaskResumeAll (os_task.c)

while( listLIST_IS_EMPTY( &xPendingReadyList ) == pdFALSE )

{

pxTCB = ( TCB_t * ) listGET_OWNER_OF_HEAD_ENTRY( ( &xPendingReadyList ) );

( void ) uxListRemove( &( pxTCB->xEventListItem ) );

The cause is that when the number of the item in xPendingReadyList is ZERO (because pxList->xListEnd.pxNext == (ListItem_t *)&(pxList->xListEnd)), the variable uxNumberOfItems is still ONE, but the FreeRTOS check if list is empty by uxNumberOfItems,

#define listLIST_IS_EMPTY( pxList ) ( ( BaseType_t ) ( ( pxList )->uxNumberOfItems == ( UBaseType_t ) 0 ) )

So in the next loop the pxTCB is an invalid pointer.

Who can explain why the list xPendingReadyList is crashed.

Thanks.

Zhiqiang

over 7 years ago

0 user3721557 over 7 years ago

Prodigy 60 points

0 QJ Wang over 7 years ago in reply to user3721557

TI__Guru**** 196776 points

Hello,

Please check if the stack is overflow. The stack is not checked for overflow by FreeRTOS.

0 user3721557 over 7 years ago in reply to QJ Wang

Prodigy 60 points

Hi, Wang,

The define is set to 2, and no stack overflow is found.
#define configCHECK_FOR_STACK_OVERFLOW 2

So do you mean which stack is to check? And how?

Thanks and Best Regards,
Ryan.

0 QJ Wang over 7 years ago in reply to user3721557

TI__Guru**** 196776 points

Hi Ryan,

It is good. What tasks do you have in your project? and how can I produce this issue?

0 user3721557 over 7 years ago in reply to QJ Wang

Prodigy 60 points

Hi, QJ,

The test environment:

1) FreeRTOS 8.2 by HALCoGEN 4.6

2) CAN and Ethernet Driver enable

3) Two tasks for CAN and Ethernet for each; and the task send data to each other.

4) The issue will happen some time

Is there any FAE for the MCU in Shanghai China?

Thank,

Ryan

0 user3721557 over 7 years ago in reply to QJ Wang

Prodigy 60 points

Hi, QJ
Do you duplicate the issue?

0 QJ Wang over 7 years ago in reply to user3721557

TI__Guru**** 196776 points

Hello,

There are several local FAEs in China. If you need on-site help, please contact with local team. But we recommend to use E2E to solve the issue.

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xPendingReadyList is crashed in FreeRTOS on RM57L843ZWT