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authorJiri Olsa <jolsa@kernel.org>2014-10-16 16:07:02 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2014-10-29 10:28:10 -0200
commit0199d244d6ed6bc1fcab38a8732fdba1ddf04080 (patch)
tree4fad84b36e63956bb7e789b45fa1456515abd2c7 /tools
parent49f4744307f9718d8e100755110b3b7b40ec4237 (diff)
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perf tools: Fix report -F in_tx 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 in_tx 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/1413468427-31049-3-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.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 82241fe54e4b..9bcdb57076b8 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1021,6 +1021,9 @@ struct sort_entry sort_abort = {
static int64_t
sort__in_tx_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 left->branch_info->flags.in_tx !=
right->branch_info->flags.in_tx;
}
@@ -1028,10 +1031,14 @@ sort__in_tx_cmp(struct hist_entry *left, struct hist_entry *right)
static int hist_entry__in_tx_snprintf(struct hist_entry *he, char *bf,
size_t size, unsigned int width)
{
- static const char *out = ".";
+ static const char *out = "N/A";
- if (he->branch_info->flags.in_tx)
- out = "T";
+ if (he->branch_info) {
+ if (he->branch_info->flags.in_tx)
+ out = "T";
+ else
+ out = ".";
+ }
return repsep_snprintf(bf, size, "%-*s", width, out);
}