Commit 0199d244 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo

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: default avatarJiri Olsa <jolsa@kernel.org>
Acked-by: default avatarNamhyung 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.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 49f47443
...@@ -1021,6 +1021,9 @@ struct sort_entry sort_abort = { ...@@ -1021,6 +1021,9 @@ struct sort_entry sort_abort = {
static int64_t static int64_t
sort__in_tx_cmp(struct hist_entry *left, struct hist_entry *right) 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 != return left->branch_info->flags.in_tx !=
right->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) ...@@ -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, static int hist_entry__in_tx_snprintf(struct hist_entry *he, char *bf,
size_t size, unsigned int width) size_t size, unsigned int width)
{ {
static const char *out = "."; static const char *out = "N/A";
if (he->branch_info->flags.in_tx) if (he->branch_info) {
out = "T"; if (he->branch_info->flags.in_tx)
out = "T";
else
out = ".";
}
return repsep_snprintf(bf, size, "%-*s", width, out); return repsep_snprintf(bf, size, "%-*s", width, out);
} }
......
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