* [BUG] perf report: segfault with --no-group in pipe mode
@ 2019-08-02 16:38 Stephane Eranian
2019-08-03 8:45 ` Jiri Olsa
0 siblings, 1 reply; 2+ messages in thread
From: Stephane Eranian @ 2019-08-02 16:38 UTC (permalink / raw)
To: LKML; +Cc: Jiri Olsa, Arnaldo Carvalho de Melo
Hi,
When trying the following command line with perf from tip,git, I got:
$ perf record --group -c 100000 -e '{branch-misses,branches}' -a -o -
sleep 1| perf report --no-group -F sample,cpu,period -i -
# To display the perf.data header info, please use
--header/--header-only options.
#
Segmentation fault (core dumped)
(gdb) r report --no-group -F sample,cpu,period -i - < tt
Starting program: /export/hda3/perftest/perf.tip report --no-group -F
sample,cpu,period -i - < tt
# To display the perf.data header info, please use
--header/--header-only options.
#
Program received signal SIGSEGV, Segmentation fault.
hlist_add_head (h=0xeb9ed8, n=0xebdfd0) at
/usr/local/google/home/eranian/G/bnw.tip/tools/include/linux/list.h:644
644 /usr/local/google/home/eranian/G/bnw.tip/tools/include/linux/list.h:
No such file or directory.
(gdb)
Can you reproduce this?
Thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [BUG] perf report: segfault with --no-group in pipe mode
2019-08-02 16:38 [BUG] perf report: segfault with --no-group in pipe mode Stephane Eranian
@ 2019-08-03 8:45 ` Jiri Olsa
0 siblings, 0 replies; 2+ messages in thread
From: Jiri Olsa @ 2019-08-03 8:45 UTC (permalink / raw)
To: Stephane Eranian; +Cc: LKML, Arnaldo Carvalho de Melo
On Fri, Aug 02, 2019 at 09:38:49AM -0700, Stephane Eranian wrote:
> Hi,
>
> When trying the following command line with perf from tip,git, I got:
>
> $ perf record --group -c 100000 -e '{branch-misses,branches}' -a -o -
> sleep 1| perf report --no-group -F sample,cpu,period -i -
> # To display the perf.data header info, please use
> --header/--header-only options.
> #
> Segmentation fault (core dumped)
>
> (gdb) r report --no-group -F sample,cpu,period -i - < tt
> Starting program: /export/hda3/perftest/perf.tip report --no-group -F
> sample,cpu,period -i - < tt
> # To display the perf.data header info, please use
> --header/--header-only options.
> #
>
> Program received signal SIGSEGV, Segmentation fault.
> hlist_add_head (h=0xeb9ed8, n=0xebdfd0) at
> /usr/local/google/home/eranian/G/bnw.tip/tools/include/linux/list.h:644
> 644 /usr/local/google/home/eranian/G/bnw.tip/tools/include/linux/list.h:
> No such file or directory.
> (gdb)
>
> Can you reproduce this?
hi,
looks like it's you might be hitting this one:
79b2fe5e7561 perf tools: Fix proper buffer size for feature processing
please try Arnaldo's perf/urgent, it's in there
jirka
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