---

(gdb) x/8x $sp
0x80425f00 <z_idle_stacks>:     0x90100808      0x00010249      0x86044448      0x0d100605
0x80425f10 <z_idle_stacks+16>:  0x080c0eda      0x03010509      0x0e80404b      0x44010747
(gdb) bt
#0  z_arm_usage_fault () at /home/vovan/ZEPHYR_RTOS/zephyrproject/zephyr/arch/arm/core/cortex_m/fault_s.S:80
#1  <signal handler called>
#2  __DSB () at /home/vovan/ZEPHYR_RTOS/zephyrproject/modules/hal/cmsis_6/CMSIS/Core/Include/cmsis_gcc.h:186
#3  z_barrier_dsync_fence_full () at /home/vovan/ZEPHYR_RTOS/zephyrproject/zephyr/include/zephyr/arch/arm/barrier.h:26
#4  barrier_dsync_fence_full () at /home/vovan/ZEPHYR_RTOS/zephyrproject/zephyr/include/zephyr/sys/barrier.h:62
#5  arm_core_mpu_enable () at /home/vovan/ZEPHYR_RTOS/zephyrproject/zephyr/arch/arm/core/mpu/arm_mpu.c:292
#6  z_arm_mpu_init () at /home/vovan/ZEPHYR_RTOS/zephyrproject/zephyr/arch/arm/core/mpu/arm_mpu.c:554
#7  0x8004de92 in arch_kernel_init () at /home/vovan/ZEPHYR_RTOS/zephyrproject/zephyr/arch/arm/include/cortex_m/kernel_arch_func.h:49
#8  z_cstart () at /home/vovan/ZEPHYR_RTOS/zephyrproject/zephyr/kernel/init.c:780
#9  0x8001a80a in z_prep_c () at /home/vovan/ZEPHYR_RTOS/zephyrproject/zephyr/arch/arm/core/cortex_m/prep_c.c:221
#10 0x8001a606 in z_arm_reset () at /home/vovan/ZEPHYR_RTOS/zephyrproject/zephyr/arch/arm/core/cortex_m/reset.S:207
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) p/x *(unsigned int *)0xe000ed28
Cannot access memory at address 0xe000ed28
(gdb) p mpu_config
$3 = {num_regions = 2, mpu_regions = 0x800f11d8 <mpu_regions>}