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| author | Jiri Olsa <jolsa@kernel.org> | 2014-10-16 18:07:06 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-10-29 15:28:48 +0300 |
| commit | 8b62fa59ed62bf1f42d35360fae8592c6b816a06 (patch) | |
| tree | 211e7c4a67f8edaf3c25210fb4b7f36061726eee /tools | |
| parent | 1b9e97a2a95e4941dcfa968c4b2e04022e9a343e (diff) | |
| download | linux-8b62fa59ed62bf1f42d35360fae8592c6b816a06.tar.xz | |
perf tools: Fix report -F dso_to 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_to
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>
Acked-by: Namhyung Kim <namhyung@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/1413468427-31049-7-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -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 fc4ff2a96616..7a9054a23c36 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -387,6 +387,9 @@ static int hist_entry__dso_from_snprintf(struct hist_entry *he, char *bf, static int64_t sort__dso_to_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->to.map, right->branch_info->to.map); } @@ -394,8 +397,11 @@ sort__dso_to_cmp(struct hist_entry *left, struct hist_entry *right) static int hist_entry__dso_to_snprintf(struct hist_entry *he, char *bf, size_t size, unsigned int width) { - return _hist_entry__dso_snprintf(he->branch_info->to.map, - bf, size, width); + if (he->branch_info) + return _hist_entry__dso_snprintf(he->branch_info->to.map, + bf, size, width); + else + return repsep_snprintf(bf, size, "%-*.*s", width, width, "N/A"); } static int64_t |