Quality RTOS & Embedded Software

 Real time embedded FreeRTOS RSS feed 
Real time embedded FreeRTOS mailing list 
Quick Start Supported MCUs PDF Books Trace Tools Ecosystem TCP & FAT Training




Loading

configASSERT( pxLink->pxNextFreeBlock == NULL );

Posted by yukunduan on October 22, 2015

Why my project stop in this assert:configASSERT( pxLink->pxNextFreeBlock == NULL ); It,s in vPortFree.


configASSERT( pxLink->pxNextFreeBlock == NULL );

Posted by yukunduan on October 22, 2015

This is the debug massage:


configASSERT( pxLink->pxNextFreeBlock == NULL );

Posted by yukunduan on October 22, 2015


configASSERT( pxLink->pxNextFreeBlock == NULL );

Posted by rtel on October 22, 2015

...because the block being freed was either not first allocated by pvPortMalloc(), or was allocated by pvPortMalloc() but has since been corrupted, or was allocated by pvPortMalloc() but has already been freed.

In all cases - it means the block you are trying to free is not valid.


configASSERT( pxLink->pxNextFreeBlock == NULL );

Posted by yukunduan on October 22, 2015

The photo is much to big.Please look it in the new title bar or save in the local.


configASSERT( pxLink->pxNextFreeBlock == NULL );

Posted by heinbali01 on October 22, 2015

the block you are trying to free is not valid

It may be helpful to look at the call-stack when the ASSERT is entered. Look at what place you're freeing a memory block. Check if you have freed it already.

Or maybe you're freeing an uninitialised pointer?

If not, things are a bit more complex. You will have to see if there is code writing outside a given space. Especially code that write in the heap space is suspect. Check all parameters of memset() and memcpy().

Regards.


configASSERT( pxLink->pxNextFreeBlock == NULL );

Posted by yukunduan on October 23, 2015

Oh,maybe the problem is I delete some tasks doubly.


[ Back to the top ]    [ About FreeRTOS ]    [ Sitemap ]    [ ]




Copyright (C) 2004-2010 Richard Barry. Copyright (C) 2010-2016 Real Time Engineers Ltd.
Any and all data, files, source code, html content and documentation included in the FreeRTOSTM distribution or available on this site are the exclusive property of Real Time Engineers Ltd.. See the files license.txt (included in the distribution) and this copyright notice for more information. FreeRTOSTM and FreeRTOS.orgTM are trade marks of Real Time Engineers Ltd.

Latest News:

FreeRTOS V9.0.0 is now available for download.


Free TCP/IP and file system demos for the RTOS


Sponsored Links

⇓ Now With No Code Size Limit! ⇓
⇑ Free Download Without Registering ⇑


FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

Renesas Electronics Gold Alliance RTOS Partner.jpg

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers

Atmel RTOS partner supporting ARM Cortex-M3 and AVR32 microcontrollers

STMicro RTOS partner supporting ARM7, ARM Cortex-M3, ARM Cortex-M4 and ARM Cortex-M0

Xilinx Microblaze and Zynq partner

Silicon Labs low power RTOS partner

Altera RTOS partner for Nios II and Cortex-A9 SoC

Freescale Alliance RTOS Member supporting ARM and ColdFire microcontrollers

Infineon ARM Cortex-M microcontrollers

Texas Instruments MCU Developer Network RTOS partner for ARM and MSP430 microcontrollers

Cypress RTOS partner supporting ARM Cortex-M3

Fujitsu RTOS partner supporting ARM Cortex-M3 and FM3

Microsemi (previously Actel) RTOS partner supporting ARM Cortex-M3

Atollic Partner

IAR Partner

Keil ARM Partner

Embedded Artists