Error from modifying subroutine in navier5.f: Signal: Segmentation fault

[MingTengCA]

Hello there,

I ran into some error after modifiying the 'subroutine avg_all' in naver5.f .
I first modified it in /.../.../nekRS/3rd_party/nek5000/core/ and reinstalled nekRS to ensure it's also updated in /.../.../nekrs/nek5000/core/.
The modified version of 'subroutine avg_all' works fine though in NEK5000.
The following is the error message:

---

calling nek_userchk ...
[mist001:95433:0:95433] Caught signal 11 (Segmentation fault: address not mapped to object at address 0x7ffffceb0000)
[mist001:95431:0:95431] Caught signal 11 (Segmentation fault: address not mapped to object at address 0x7ffff1f60000)
[mist001:95432:0:95432] Caught signal 11 (Segmentation fault: address not mapped to object at address 0x7fffcf670000)
[mist001:95430:0:95430] Caught signal 11 (Segmentation fault: address not mapped to object at address 0x7fffe6650000)
==== backtrace (tid: 95433) ====
0 0x00000000000bad20 _memset_power8() :0
1 0x000000000010ea54 avg_all() /scratch/m/mavripli/ming88/nekrs/nek5000/core/navier5.f:967

[mist001:95433] *** Process received signal ***
[mist001:95433] Signal: Segmentation fault (11)
[mist001:95433] Signal code: (-6)
[mist001:95433] Failing at address: 0x2ec112000174c9
[mist001:95433] [ 0] linux-vdso64.so.1(_kernel_sigtramp_rt64+0x0)[0x2000000604d8]
[mist001:95433] [ 1] /lib64/glibc-hwcaps/power9/libc-2.28.so(+0xbad20)[0x2000010aad20]
[mist001:95433] [ 2] /gpfs/fs0/scratch/m/mavripli/ming88/nekrs/run/turbChannel/.cache/nek5000/libturbChannel.so(avg_all+0x149c)[0x20006010ea54]
[mist001:95433] *** End of error message ***
==== backtrace (tid: 95431) ====
0 0x00000000000bad24 _memset_power8() :0
1 0x000000000010ea54 avg_all() /scratch/m/mavripli/ming88/nekrs/nek5000/core/navier5.f:967

[mist001:95431] *** Process received signal ***
[mist001:95431] Signal: Segmentation fault (11)
[mist001:95431] Signal code: (-6)
[mist001:95431] Failing at address: 0x2ec112000174c7
[mist001:95431] [ 0] linux-vdso64.so.1(_kernel_sigtramp_rt64+0x0)[0x2000000604d8]
[mist001:95431] [ 1] /lib64/glibc-hwcaps/power9/libc-2.28.so(+0xbad24)[0x2000010aad24]
[mist001:95431] [ 2] /gpfs/fs0/scratch/m/mavripli/ming88/nekrs/run/turbChannel/.cache/nek5000/libturbChannel.so(avg_all+0x149c)[0x20006010ea54]
[mist001:95431] *** End of error message ***
==== backtrace (tid: 95432) ====
0 0x00000000000bad2c _memset_power8() :0
1 0x000000000010ea54 avg_all() /scratch/m/mavripli/ming88/nekrs/nek5000/core/navier5.f:967

[mist001:95432] *** Process received signal ***
[mist001:95432] Signal: Segmentation fault (11)
[mist001:95432] Signal code: (-6)
[mist001:95432] Failing at address: 0x2ec112000174c8
[mist001:95432] ==== backtrace (tid: 95430) ====
0 0x00000000000bad20 __memset_power8() :0
[ 0] linux-vdso64.so.1(_kernel_sigtramp_rt64+0x0)[0x2000000604d8]
1 0x000000000010ea54 avg_all() /scratch/m/mavripli/ming88/nekrs/nek5000/core/navier5.f:967

[mist001:95432] [ 1] /lib64/glibc-hwcaps/power9/libc-2.28.so(+0xbad2c)[0x2000010aad2c]
[mist001:95432] [ 2] [mist001:95430] *** Process received signal ***
[mist001:95430] Signal: Segmentation fault (11)
[mist001:95430] Signal code: (-6)
[mist001:95430] Failing at address: 0x2ec112000174c6
[mist001:95430] [ 0] linux-vdso64.so.1(kernel_sigtramp_rt64+0x0)[0x2000000604d8]
[mist001:95430] [ 1] /gpfs/fs0/scratch/m/mavripli/ming88/nekrs/run/turbChannel/.cache/nek5000/libturbChannel.so(avg_all+0x149c)[0x20006010ea54]
[mist001:95432] *** End of error message ***
/lib64/glibc-hwcaps/power9/libc-2.28.so(+0xbad20)[0x2000010aad20]
[mist001:95430] [ 2] /gpfs/fs0/scratch/m/mavripli/ming88/nekrs/run/turbChannel/.cache/nek5000/libturbChannel.so(avg_all+0x149c)[0x20006010ea54]
[mist001:95430] *** End of error message ***

I was wondering what I missed here.
thanks for your help!

Regards,
Ming