diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2014-10-16 16:07:07 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-10-29 10:29:05 -0200 |
| commit | 288a4b91fc0dc7c0ce3509339e8dec7b590a4d73 (patch) | |
| tree | 2daf08fbb8ab59679b10259f9bcc7795608c1d4e | |
| parent | 8b62fa59ed62bf1f42d35360fae8592c6b816a06 (diff) | |
| download | linux-288a4b91fc0dc7c0ce3509339e8dec7b590a4d73.tar.bz2 | |
perf tools: Fix report -F dso_from for data without branch info
The branch field sorting code assumes hist_entry::branch_info is
allocated, which is wrong and following perf session ends up with report
segfault.
$ perf record ls
$ perf report -F dso_from
perf: Segmentation fault
Checking that hist_entry::branch_info is valid and display "N/A" string
in snprint callback if it's not.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1413468427-31049-8-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/sort.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 7a9054a23c36..9402885a77f3 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -373,6 +373,9 @@ struct sort_entry sort_cpu = { static int64_t sort__dso_from_cmp(struct hist_entry *left, struct hist_entry *right) { + if (!left->branch_info || !right->branch_info) + return cmp_null(left->branch_info, right->branch_info); + return _sort__dso_cmp(left->branch_info->from.map, right->branch_info->from.map); } @@ -380,8 +383,11 @@ sort__dso_from_cmp(struct hist_entry *left, struct hist_entry *right) static int hist_entry__dso_from_snprintf(struct hist_entry *he, char *bf, size_t size, unsigned int width) { - return _hist_entry__dso_snprintf(he->branch_info->from.map, - bf, size, width); + if (he->branch_info) + return _hist_entry__dso_snprintf(he->branch_info->from.map, + bf, size, width); + else + return repsep_snprintf(bf, size, "%-*.*s", width, width, "N/A"); } static int64_t |