RTOS/TM4C1294NCPDT: secure_iot: E_stackOverflow: Task stack overflow.

Tushar Patel40

Part Number: TM4C1294NCPDT
Other Parts Discussed in Thread: SYSBIOS

Tool/software: TI-RTOS

I am using TI-RTOS V2.16 for TM4C1294NCPDT microcontroller.

I am trying to use secute_iot project working on my application board. I have followed all steps to include wolfssl in to my project as shown in

http://processors.wiki.ti.com/index.php/Using_wolfSSL_with_TI-RTOS

My project grabs IP address from our network but then it crashes with task stack overflow . Please see the error below.

[CORTEX_M4_0] Using MAC address in flash
Starting BIOS
Service Status: DHCPC    : Enabled :          : 000
Service Status: DHCPC    : Enabled : Running : 000

   Welcome to the Crypto Connected LaunchPad's,
       Secure Internet of Things Demo.

MAC Address: 001ab602a2c4
Network Added: If-1:10.40.149.61
Service Status: DHCPC    : Enabled : Running : 017
ti.sysbios.knl.Task: line 373: E_stackOverflow: Task 0x20001548 stack overflow.
xdc.runtime.Error.raise: terminating execution

I also checked ROV and here is the result. It seems ShaTransform is over flowing which I believe declared in wolfssl.aem4f.

Please help.

over 6 years ago

0 ToddMullanix over 6 years ago

TI__Guru* 96960 points

Can you increase the stack size for the ShaTransform task?

0 Tushar Patel40 over 6 years ago in reply to ToddMullanix

Intellectual 280 points

ShaTransform is part of WOLFSSL library. If I search in my project only place I can find it is wolfssl.aem4f.

Please she the snapshot below. How can i increase stack size on this?

0 ToddMullanix over 6 years ago in reply to Tushar Patel40

TI__Guru* 96960 points

Unfortunately, You'll need to contact WolfSSL for their code.

I would look to see if you are over-writing a buffer or something that is corrupting the Task_Handle. What is right before the Task_Handle (0x20001548)? Note: the kernel initializes (by default) the stack to 0xbebebebe. Do you see that on the stack? I'm trying to determine if the corruption is coming up from the stack or down from the things before the Task_Handle.

Also, is the System stack ok (Hwi->Module).

Todd

0 Tushar Patel40 over 6 years ago in reply to ToddMullanix

Intellectual 280 points

I am using secure_iot demo project that is available from TI-RTOS. So far I have not added any application code.

What is right before the Task_Handle (0x20001548)? : That is some system function. I did not define any idle function.

Note: the kernel initializes (by default) the stack to 0xbebebebe. Do you see that on the stack?: How do I check this?

Also, is the System stack ok (Hwi->Module).: HWI is not used.

0 ToddMullanix over 6 years ago in reply to Tushar Patel40

TI__Guru* 96960 points

Please look at ROV->Hwi->Module to get the status of the System Stack.

0 Tushar Patel40 over 6 years ago in reply to ToddMullanix

Intellectual 280 points

Please see attached screen shot.

Arm-based microcontrollers

Arm-based microcontrollers forum

RTOS/TM4C1294NCPDT: secure_iot: E_stackOverflow: Task stack overflow.