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arch: arc: fix the handling of stack check exception

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stack check exception may come out with other protection
vilation, e.g. MPU read/write. So the possible paramter
will be 0x02 | [0x4 | 0x8].

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
This commit is contained in:
Wayne Ren 2019-03-26 16:41:37 +08:00 • committed by Anas Nashif
commit 6b5bed6aa9
2 changed files with 3 additions and 3 deletions
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4
arch/arc/core/fault.c
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@ -74,8 +74,10 @@ void _Fault(NANO_ESF *esf)
#ifdef CONFIG_ARC_STACK_CHECKING
/* Vector 6 = EV_ProV. Regardless of code, parameter 2 means stack
* check violation
* stack check and mpu violation can come out together, then
* parameter = 0x2 | [0x4 | 0x8 | 0x1]
*/
if (vector == 6 && parameter == 2) {
if (vector == 6 && parameter & 0x2) {
z_NanoFatalErrorHandler(_NANO_ERR_STACK_CHK_FAIL, esf);
return;
}

2
tests/kernel/fatal/src/main.c
View file

@ -279,13 +279,11 @@ void test_fatal(void)
#ifdef CONFIG_USERSPACE
#if !defined(CONFIG_ARC) /* FIXME #13341 */
TC_PRINT("test stack HW-based overflow - user 1\n");
check_stack_overflow(stack_hw_overflow, K_USER);
TC_PRINT("test stack HW-based overflow - user 2\n");
check_stack_overflow(stack_hw_overflow, K_USER);
#endif
#endif /* CONFIG_USERSPACE */
#endif /* !CONFIG_ARCH_POSIX */