Different SIGSEGV codes (x86 and ppc64le)

[Gustavo Bueno Romero]

Breno,

Just to complement what you said, the si->si_code value you get on Power
with the code you provided (SEGV_ACCERR 2) comes
from .../arch/powerpc/mm/fault.c, line 375: https://goo.gl/6K40Bv

Hence, changing that line to 'code = SEGV_MAPERR;' makes your code die with
SIGSEGV Code ID 1, not 2:

:~/stack$ uname -a
Linux gromero12 4.4.0 #3 SMP Tue Jan 19 15:46:14 EST 2016 ppc64le ppc64le
ppc64le GNU/Linux
:~/stack$ ./overflow
Got SIGSEGV(1) at address: 0x3fffcecefff0
Segmentation fault


Regards,
--
Gustavo Romero
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