i.MX ProcessorsのトピックKernel crash when LP Security Violation Interrupt enabled

Kernel crash when LP Security Violation Interrupt enabled

ethanyang — Tue, 13 Sep 2016 09:51:26 GMT

Hi,

We faced a issue with secvio.c in the caam module.

The “snvs_secvio_install_handler” function used to register call back for interrupt.

Then the LP security violation interrupt was enabled as below.
val = 0x80000000;
writel(val, snvs_base + SNVS_HPSICR);
This causes to crash the driver as soon as a tamper is triggered.

Full crash log file is attached.

Regards,

Ethan

Original Attachment has been moved to: crashlog.txt.zip

Re: Kernel crash when LP Security Violation Interrupt enabled

igorpadykov — Wed, 14 Sep 2016 05:12:27 GMT

Hi Ethan

please try attached patch.

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------