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| author |   Jiri Olsa <jolsa@redhat.com> | 2012-04-04 22:21:31 +0200 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-04-05 18:58:45 -0300 |
| commit | 8493fe1daf15324eb13a4cc2f94e258716daa568 (patch) | |
| tree | 31cdd2296154a6288b643cda10af61b78235f4a1 /tools/perf/util/map.c | |
| parent | perf hists: Catch and handle out-of-date hist entry maps. (diff) | |
| download | linux-dev-8493fe1daf15324eb13a4cc2f94e258716daa568.tar.xz linux-dev-8493fe1daf15324eb13a4cc2f94e258716daa568.zip | |
perf hists browser: Fix NULL deref in hists browsing code
If there's an event with no samples in data file, the perf report
command can segfault after entering the event details menu.
Following steps reproduce the issue:
# ./perf record -e syscalls:sys_enter_kexec_load,syscalls:sys_enter_mmap ls
# ./perf report
# enter '0 syscalls:sys_enter_kexec_load' menu
# pres ENTER twice
Above steps are valid assuming ls wont run kexec.. ;)
The check for sellection to be NULL is missing. The fix makes sure it's
being check. Above steps now endup with menu being displayed allowing
'Exit' as the only option.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1333570898-10505-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/map.c')
0 files changed, 0 insertions, 0 deletions