Father investigation shows, that tfm_pendsv_do_schedule() calls tfm_thrd_context_switch() and passing pth_curr which is set to NULL, so it is causing memcpy() to 0 address => Bus Fault. So this code may not work properly. Please provide a fix.

-----Original Message----- From: TF-M tf-m-bounces@lists.trustedfirmware.org On Behalf Of Andrej Butok via TF-M Sent: Tuesday, April 23, 2019 1:38 PM To: TF-M@lists.trustedfirmware.org Subject: [EXT] [TF-M] TFM_PSA_API =>BusFault

Hello,

After last commits on TFM master branch, when TFM_PSA_API is defined, the tfm examples finish in main()=>tfm_spm_init()=>....=> tfm_thrd_context_switch()=>tfm_memcpy()=>BusFault_Handler(). When TFM_PSA_API is not defined, everything is OK. Also, TFM examples were OK at least 2 weeks ago, even when TFM_PSA_API was defined.

Is it known issue? Or something new (during last week) must be added into our target-specific code?

Thanks, Andrej Butok

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