Commit 38cdbd39 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo

perf tools: Fix report -F symbol_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 symbol_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: 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/1413468427-31049-5-git-send-email-jolsa@kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 428560e7
......@@ -413,8 +413,13 @@ sort__sym_from_cmp(struct hist_entry *left, struct hist_entry *right)
static int64_t
sort__sym_to_cmp(struct hist_entry *left, struct hist_entry *right)
{
struct addr_map_symbol *to_l = &left->branch_info->to;
struct addr_map_symbol *to_r = &right->branch_info->to;
struct addr_map_symbol *to_l, *to_r;
if (!left->branch_info || !right->branch_info)
return cmp_null(left->branch_info, right->branch_info);
to_l = &left->branch_info->to;
to_r = &right->branch_info->to;
if (!to_l->sym && !to_r->sym)
return _sort__addr_cmp(to_l->addr, to_r->addr);
......@@ -434,10 +439,14 @@ static int hist_entry__sym_from_snprintf(struct hist_entry *he, char *bf,
static int hist_entry__sym_to_snprintf(struct hist_entry *he, char *bf,
size_t size, unsigned int width)
{
struct addr_map_symbol *to = &he->branch_info->to;
return _hist_entry__sym_snprintf(to->map, to->sym, to->addr,
he->level, bf, size, width);
if (he->branch_info) {
struct addr_map_symbol *to = &he->branch_info->to;
return _hist_entry__sym_snprintf(to->map, to->sym, to->addr,
he->level, bf, size, width);
}
return repsep_snprintf(bf, size, "%-*.*s", width, width, "N/A");
}
struct sort_entry sort_dso_from = {
......
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