Re: [PATCHSET 0/3] perf diff: Introduce delta-abs compute method

[Jiri Olsa]

On Mon, Feb 06, 2017 at 04:20:34PM +0900, Namhyung Kim wrote:

SNIP

> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git
> 
> Thanks,
> Namhyung
> 
> 
> Namhyung Kim (3):
>   perf diff: Add 'delta-abs' compute method
>   perf diff: Add diff.order config option
>   perf diff: Add diff.compute config option
> 

hum, do I miss some -o fix?

[jolsa@krava perf]$ ./perf diff -o 1 -c delta-abs
Segmentation fault (core dumped)

it's not delta-abs specific, I'm getting the crash for others

thanks,
jirka


(gdb) r diff -o 1 -c delta-abs
Starting program: /home/jolsa/kernel/linux-perf/tools/perf/perf diff -o 1 -c delta-abs
Missing separate debuginfos, use: dnf debuginfo-install glibc-2.23.1-11.fc24.x86_64
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Detaching after fork from child process 12611.

Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
Missing separate debuginfos, use: dnf debuginfo-install audit-libs-2.7.1-1.fc24.x86_64 bzip2-libs-1.0.6-21.fc24.x86_64 elfutils-libelf-0.168-1.fc24.x86_64 elfutils-libs-0.168-1.fc24.x86_64 libcap-ng-0.7.8-1.fc24.x86_64 libunwind-1.1-11.fc24.x86_64 nss-softokn-freebl-3.28.1-1.0.fc24.x86_64 numactl-libs-2.0.11-2.fc24.x86_64 openssl-libs-1.0.2j-3.fc24.x86_64 perl-libs-5.22.3-368.fc24.x86_64 python-libs-2.7.13-1.fc24.x86_64 slang-2.3.0-5.fc24.x86_64 xz-libs-5.2.2-2.fc24.x86_64 zlib-1.2.8-10.fc24.x86_64
(gdb) bt
#0  0x0000000000000000 in ?? ()
#1  0x000000000059c3c2 in fprintf_line (hists=0x2159980, hpp=0x7fffffffda60, line=0, fp=0x7ffff55c3600 <_IO_2_1_stdout_>)
    at ui/stdio/hist.c:677
#2  0x000000000059c4af in hists__fprintf_standard_headers (hists=0x2159980, hpp=0x7fffffffda60, fp=0x7ffff55c3600 <_IO_2_1_stdout_>)
    at ui/stdio/hist.c:700
#3  0x000000000059c707 in hists__fprintf_headers (hists=0x2159980, fp=0x7ffff55c3600 <_IO_2_1_stdout_>) at ui/stdio/hist.c:745
#4  0x000000000059c7b9 in hists__fprintf (hists=0x2159980, show_header=true, max_rows=0, max_cols=0, min_pcnt=0, 
    fp=0x7ffff55c3600 <_IO_2_1_stdout_>, use_callchain=false) at ui/stdio/hist.c:769
#5  0x000000000042b6aa in hists__process (hists=0x2159980) at builtin-diff.c:694
#6  0x000000000042b944 in data_process () at builtin-diff.c:753
#7  0x000000000042bb2b in __cmd_diff () at builtin-diff.c:790
#8  0x000000000042d0ed in cmd_diff (argc=0, argv=0x7fffffffe3d0, prefix=0x0) at builtin-diff.c:1349
#9  0x00000000004b817e in run_builtin (p=0xa10be0 <commands+96>, argc=5, argv=0x7fffffffe3d0) at perf.c:359
#10 0x00000000004b83eb in handle_internal_command (argc=5, argv=0x7fffffffe3d0) at perf.c:421
#11 0x00000000004b8530 in run_argv (argcp=0x7fffffffe21c, argv=0x7fffffffe210) at perf.c:467
#12 0x00000000004b8933 in main (argc=5, argv=0x7fffffffe3d0) at perf.c:614