Re: [Tee-dev] debugging heap issues in OP-TEE

On 10/26/17 9:47 AM, Jerome Forissier wrote:

Hi Stuart,

On Thu, Oct 26, 2017 at 4:17 PM, Stuart Yoder <stuart.yoder@arm.com mailto:stuart.yoder@arm.com> wrote:

All,

I am facing an issue I need to debug where after running some number of TAs, the OP-TEE kernel is no longer able to malloc() memory and can no longer load a TA.  So, there seems to be a leak of some kind I need to debug.  I'm using a crypto accelerator, and so there is most likely a bug in my crypto driver.

Is there any debug mechanism in OP-TEE I could use to get data or statistics about how much space is left on the heap?

Yes, there is a pseudo-TA that reports some statistics about the OP-TEE kernel heap. Build with CFG_WITH_STATS=y to enable it. The client application is here: https://github.com/jforissier/tee-stats. Quite basic, but hopefully helpful.

[1] https://github.com/OP-TEE/optee_os/blob/master/core/arch/arm/pta/stats.c

Thank you! ...will give this a try.

Stuat