[Intel-gfx] Segmentation fault - gputop

Edward Suski esuski at oblong.com
Fri Mar 25 16:25:20 UTC 2016

We are using:

Gputop: http://github.com/rib/gputop

Here are the build instructions:

On a Skylake (i7-6700TE CPU @ 2.4 GHz).  Running Ubuntu 15.10 kernel:
4.4.2-040402-generic and getting the following results:

It builds but segfaults when run:

Program received signal SIGSEGV, Segmentation fault.

0x00007ffff7b7a1e6 in gputop_ncurses_init () at gputop-ncurses.c:1750

1750          for (i = 0; i <
gputop_perf_oa_supported_metric_set_guids->len; i++)

(gdb) bt

#0  0x00007ffff7b7a1e6 in gputop_ncurses_init () at gputop-ncurses.c:1750

#1  0x00007ffff7de95ba in call_init (l=<optimized out>, argc=argc at entry=1,
argv=argv at entry=0x7fffffffe4c8,

    env=env at entry=0x7fffffffe4d8) at dl-init.c:72

#2  0x00007ffff7de96cb in call_init (env=<optimized out>, argv=<optimized
out>, argc=<optimized out>,

    l=<optimized out>) at dl-init.c:30

#3  _dl_init (main_map=0x7ffff7ffe188, argc=1, argv=0x7fffffffe4c8,
env=0x7fffffffe4d8) at dl-init.c:120

#4  0x00007ffff7dd9d0a in _dl_start_user () from /lib64/ld-linux-x86-64.so.2

#5  0x0000000000000001 in ?? ()

#6  0x00007fffffffe70e in ?? ()

#7  0x0000000000000000 in ?? ()

(gdb) quit

Any suggestions?  We are open to a brief phone call if that would help.


Edward Suski

Vice President of Hardware Development

Oblong Industries

esuski at oblong.com

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