Re: Stack check failure with qemu_x86
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Boie, Andrew P
There's no need to enable the stack sentinel on this target. qemu_x86, by default, has MMU-assisted stack overflow protection enabled. Unless you can reproduce this only when the sentinel is enabled? In which case this is a very interesting situation, please let me know.
In GDB you can set a breakpoint on _SysFatalErrorHandler() to debug when issues happen, all fatal exceptions go through there.
Andrew
From: zephyr-users-bounces@... [mailto:zephyr-users-bounces@...]
On Behalf Of Vakul Garg
Sent: Wednesday, December 6, 2017 11:39 PM To: zephyr-users@... Subject: [Zephyr-users] Stack check failure with qemu_x86
Hi
I am running IPSP sample app using qemu_86 (on master branch). I have enabled following to detect stack corruption.
+CONFIG_DEBUG=y +CONFIG_STACK_USAGE=y +CONFIG_STACK_SENTINEL=y
This results in stack check error. I tried attaching gdb, but the qemu itself terminates resulting on closure of debug connection
Can someone give me pointers how to debug the same?
***** Stack Check Fail! ***** Current thread ID = 0x004035a0 Faulting segment:address = 0x0008:0x00003f6f eax: 0x5be0cd19, ebx: 0xa54ff53a, ecx: 0x6a09e667, edx: 0x3c6ef372 esi: 0x1f83d9ab, edi: 0x510e527f, ebp: 0x9b05688c, esp: 0x0041dff8 eflags: 0x202 Terminate emulator due to fatal kernel error
Regards
Vakul
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