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mpu_stack_guard_test fails on many arm platforms, including qemu #5735

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nashif opened this issue Jan 19, 2018 · 3 comments
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mpu_stack_guard_test fails on many arm platforms, including qemu #5735

nashif opened this issue Jan 19, 2018 · 3 comments
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area: ARM ARM (32-bit) Architecture bug The issue is a bug, or the PR is fixing a bug priority: low Low impact/importance bug

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@nashif
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nashif commented Jan 19, 2018

sample samples/mpu/mpu_stack_guard_test fails on frdm_k64f:

Connecting to /dev/ttyACM0
***** BOOTING ZEPHYR OS v1.10.99 - BUILD: Jan 19 2018 03:15:21 *****
STACK_ALIGN 0x8
MPU STACK GUARD Test
Canary Initial Value = 0xf0cacc1a threads 0x200010e0
Canary = 0x20000240	Test not passed.
***** BUS FAULT *****
  Executing thread ID (thread): 0x200010e0
  Faulting instruction address:  0x209c
  Imprecise data bus error
Fatal fault in thread 0x200010e0! Aborting.
***** HARD FAULT *****
  Fault escalation (see below)
***** BUS FAULT *****
  Executing thread ID (thread): 0x200010e0
  Faulting instruction address:  0x1f4
  Imprecise data bus error
Fatal fault in ISR! Spinning...
@nashif nashif added area: ARM ARM (32-bit) Architecture area: Debugging labels Jan 19, 2018
@nashif nashif added bug The issue is a bug, or the PR is fixing a bug priority: medium Medium impact/importance bug and removed area: Debugging labels Jan 19, 2018
nashif added a commit to nashif/zephyr that referenced this issue Jan 24, 2018
@nashif
samples: exclude some platforms due to bug [REVERTME]
2aadbb5 
Do not build for some unsupported architecture and exclude ARM qemu
platform due to bug zephyrproject-rtos#5735.

STACK_ALIGN 0x8
MPU STACK GUARD Test
Canary Initial Value = 0xf0cacc1a threads 0x200010e0
Canary = 0x20000240    Test not passed.
***** BUS FAULT *****
  Executing thread ID (thread): 0x200010e0
  Faulting instruction address:  0x209c
  Imprecise data bus error
Fatal fault in thread 0x200010e0! Aborting.
***** HARD FAULT *****
  Fault escalation (see below)
***** BUS FAULT *****
  Executing thread ID (thread): 0x200010e0
  Faulting instruction address:  0x1f4
  Imprecise data bus error
Fatal fault in ISR! Spinning...

Signed-off-by: Anas Nashif <[email protected]>
nashif added a commit that referenced this issue Jan 24, 2018
@nashif
samples: exclude some platforms due to bug [REVERTME]
40188a8 
Do not build for some unsupported architecture and exclude ARM qemu
platform due to bug #5735.

STACK_ALIGN 0x8
MPU STACK GUARD Test
Canary Initial Value = 0xf0cacc1a threads 0x200010e0
Canary = 0x20000240    Test not passed.
***** BUS FAULT *****
  Executing thread ID (thread): 0x200010e0
  Faulting instruction address:  0x209c
  Imprecise data bus error
Fatal fault in thread 0x200010e0! Aborting.
***** HARD FAULT *****
  Fault escalation (see below)
***** BUS FAULT *****
  Executing thread ID (thread): 0x200010e0
  Faulting instruction address:  0x1f4
  Imprecise data bus error
Fatal fault in ISR! Spinning...

Signed-off-by: Anas Nashif <[email protected]>
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Just double checked this. The expected case when using the default prj file is to fail. The output given above indicates the prj.conf was used. If the prf_stack_guard.prj is used, the error's will be correctly determined to be stacking errors.

@agross-oss
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It should be noted that qemu (current version in zephyr) does not support MPU. And not all boards have MPUs. So perhaps we need to adjust the whitelist.

@nashif nashif added priority: low Low impact/importance bug and removed priority: medium Medium impact/importance bug labels Feb 20, 2018
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nashif commented Nov 5, 2018

AFAIK should be resolved with the new SDK support MPU on ARM.

@nashif nashif closed this as completed Nov 5, 2018
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