tests: tests/net/iface: failed: Unknown Error for multiply NXP platforms

[hakehuang]

Describe the bug
below case are failed
net.iface.iid.stable.net_iface.ipv6_iid_stable

test is failed on v4.3.0-rc1 on

• imx95_evk/mimx9596/m7
• frdm_mcxw72/mcxw727c/cpu0

testcase path is tests/net/iface

• is_regression

see logs for details

To Reproduce
1.

scripts/twister -p imx95_evk/mimx9596/m7  -T tests/net/iface -s net.iface.iid.stable

or

# west twister -p imx95_evk/mimx9596/m7 -T tests/net/iface -s net.iface.iid.stable

2. See error

Unknown Error

Expected behavior
test pass

Impact

Logs and console output

*** Booting Zephyr OS build v4.3.0-rc1 ***
Running TESTSUITE net_iface
===================================================================
START - test_get_by_index
 PASS - test_get_by_index in 0.001 seconds
===================================================================
START - test_get_by_index_from_userspace
 PASS - test_get_by_index_from_userspace in 0.001 seconds
===================================================================
START - test_gw_addr_add
 PASS - test_gw_addr_add in 0.001 seconds
===================================================================
START - test_gw_addr_add_from_userspace
 PASS - test_gw_addr_add_from_userspace in 0.001 seconds
===================================================================
START - test_interface_name
 PASS - test_interface_name in 0.001 seconds
===================================================================
START - test_ipv4_addr_foreach
 PASS - test_ipv4_addr_foreach in 0.001 seconds
===================================================================
START - test_ipv4_maddr_foreach
 PASS - test_ipv4_maddr_foreach in 0.001 seconds
===================================================================
START - test_ipv6_addr_foreach
 PASS - test_ipv6_addr_foreach in 0.001 seconds
===================================================================
START - test_ipv6_iid_eui64
 SKIP - test_ipv6_iid_eui64 in 0.001 seconds
===================================================================
START - test_ipv6_iid_stable
E: ***** MPU FAULT *****
E:   Data Access Violation
E:   MMFAR Address: 0x20007800
E: r0/a1:  0x649c03e2  r1/a2:  0xc36c698b  r2/a3:  0x200077f8
E: r3/a4:  0x36363636 r12/ip:  0x00000007 r14/lr:  0xf5dee38f
E:  xpsr:  0x01000000
E: Faulting instruction address (r15/pc): 0x0000cf54
E: >>> ZEPHYR FATAL ERROR 2: Stack overflow on CPU 0
E: Current thread: 0x200019e8 (test_ipv6_iid_stable)
E: Halting system

Environment (please complete the following information):

• OS: (e.g. Linux ): Linux
• Toolchain (e.g Zephyr SDK): zephyr
• Commit SHA or Version used: v4.3.0-rc1

[djiatsaf-st]

Hello @hakehuang,

I encountered the same issue introduced by this commit: 9c13bfd on some STM32 platforms.

I found a fix by increasing the ztest thread stack size to 2048 KB using CONFIG_ZTEST_STACK_SIZE=2048.

This may also work on your platforms.

I plan to create a PR with this fix, but maybe there is something I missed that needs to be taken into account before proceeding.

[hakehuang]

I plan to create a PR with this fix, but maybe there is something I missed that needs to be taken into account before proceeding.

@djiatsaf-st thanks for checking, your fixes works for NXP platforms, but I will do a full regression with your PR.