FRDM_K64F: `arch.arm.user.stack.float` test fail

[PLangowski]

Describe the bug

arch.arm.user.stack.float tests fail on frdm_k64f

Regression

• This is a regression.

Steps to reproduce

twister -p frdm_k64f/mk64f12 -s tests/arch/arm/arm_user_stack_test

Relevant log output

Running TESTSUITE arm_user_stack_test 
=================================================================== 
START - test_arm_user_stack_corruption 
Call low_fn from user 
Call hi_fn from user 


The log ends here.

Impact

Annoyance – Minor irritation; no significant impact on usability or functionality.

Environment

• Zephyr version: v4.2.0-4749-gca68c771988a

Additional Context

No response

[decsny]

Is this a new test? Otherwise how is it not a regression?

[dleach02]

This is a new test. @wearyzen can you look at this as this platform is failing the new test you added.

[zejiang0jason]

Hi @PLangowski , I tried and didn't see your issue.

*** Booting Zephyr OS build v4.2.0-5624-gfb7a74ebbd0a ***
Running TESTSUITE arm_user_stack_test
===================================================================
START - test_arm_user_stack_corruption
Call low_fn from user
Call hi_fn from user
Call attack_entry from user
E: ***** BUS FAULT *****
E:   Imprecise data bus error
E:   NXP MPU error, port 3
E:     Mode: User, Data Address: 0x20000c68
E:     Type: Write, Master: 0, Regions: 0x8800
E: r0/a1:  0x0000c77d  r1/a2:  0x00000000  r2/a3:  0x00000001
E: r3/a4:  0x20000c68 r12/ip:  0x0000aa61 r14/lr:  0x00000a85
E:  xpsr:  0x21000000
E: s[ 0]:  0x00000a61  s[ 1]:  0x00000a2d  s[ 2]:  0x00000000  s[ 3]:  0x00000000
E: s[ 4]:  0x00000000  s[ 5]:  0x00000000  s[ 6]:  0x00000000  s[ 7]:  0x00000000
E: s[ 8]:  0x00000000  s[ 9]:  0x00000000  s[10]:  0x00000000  s[11]:  0x00000000
E: s[12]:  0x00000000  s[13]:  0x00000000  s[14]:  0x00000000  s[15]:  0x00000000
E: fpscr:  0x00000000
E: Faulting instruction address (r15/pc): 0x00009290
E: >>> ZEPHYR FATAL ERROR 0: CPU exception on CPU 0
E: Current thread: 0x20000700 (unknown)
 PASS - test_arm_user_stack_corruption in 0.016 seconds
===================================================================
TESTSUITE arm_user_stack_test succeeded

------ TESTSUITE SUMMARY START ------

SUITE PASS - 100.00% [arm_user_stack_test]: pass = 1, fail = 0, skip = 0, total = 1 duration = 0.016 seconds
 - PASS - [arm_user_stack_test.test_arm_user_stack_corruption] duration = 0.016 seconds

------ TESTSUITE SUMMARY END ------

===================================================================
PROJECT EXECUTION SUCCESSFUL

did you connect the debugger to test? or press reset pin to run? thanks.