Hi,
ltp/mprotect04[1] crashed by SEGV_PKUERR on ppc64(LPAR on P730, Power 8 8247-22L) with kernel-v4.16.0-rc4.
10000000-10020000 r-xp 00000000 fd:00 167223 mprotect04
10020000-10030000 r--p 00010000 fd:00 167223 mprotect04
10030000-10040000 rw-p 00020000 fd:00 167223 mprotect04
1001a380000-1001a3b0000 rw-p 00000000 00:00 0 [heap]
7fffa6c60000-7fffa6c80000 --xp 00000000 00:00 0
&exec_func = 0x10030170
&func = 0x7fffa6c60170
While perform
"(*func)();" we get the segmentation fault.
strace log:
-------------------
mprotect(0x7fffaed00000, 131072, PROT_EXEC) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_PKUERR, si_addr=0x7fffaed00170} ---
[1] https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/mprotect/mprotect04.c
--