tests/kernel/mem_protect/mem_protect failed with arcmwdt toolchain

[IRISZZW]

Describe the bug
tests/kernel/mem_protect/mem_protect failed with arcmwdt toolchain

To Reproduce
Steps to reproduce the behavior:

1. west build -b nsim_em -d build tests/kernel/mem_protect/mem_protect
2. west flash
3. See error

Logs and console output

*** Booting Zephyr OS build zephyr-v2.6.0-474-gb4faf7fe6320  ***
Running test suite memory_protection_test_suite
===================================================================
START - test_permission_inheritance
E: ***** Exception vector: 0x6, cause code: 0x1, parameter 0x4
E: Address 0x8000cb48
E: EV_ProtV
E: Memory read protection violation (MPU)
E:  r0: 0x8000cb48  r1: 0xa5  r2: 0x0  r3: 0x0
E:  r4: 0x0  r5: 0x0  r6: 0x8f  r7: 0x0
E:  r8: 0x0  r9: 0x0 r10: 0x0 r11: 0x0
E: r12: 0x4 r13: 0x0  pc: 0xda
E:  blink: 0xca status32: 0x80186886
E: lp_end: 0x62fc lp_start: 0x627c lp_count: 0x0
E: >>> ZEPHYR FATAL ERROR 0: CPU exception on CPU 0
E: Current thread: 0x8000ca00 (unknown)
Caught system error -- reason 0 1
fatal error expected as part of test case
 PASS - test_permission_inheritance in 0.12 seconds

......

===================================================================
START - test_mem_part_assign_bss_vars_zero

    Assertion failed at /SCRATCH2/Watson/zephyrproject/zephyr/tests/kernel/mem_protect/mem_protect/src/mem_partition.c:33: test_mem_part_assign_bss_vars_zero: zeroed_var == 0 is false

 FAIL - test_mem_part_assign_bss_vars_zero in 0.8 seconds
===================================================================
START - test_mem_part_auto_determ_size
 PASS - test_mem_part_auto_determ_size in 0.2 seconds
===================================================================

......

===================================================================
Test suite memory_protection_test_suite failed.
===================================================================
PROJECT EXECUTION FAILED

Environment (please complete the following information):

• OS: (Linux)
• Toolchain (arcmwdt)
• Commit SHA: b4faf7f