Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 04/10] perf tools: Fix report -F in_tx for data without branch info | Date | Wed, 29 Oct 2014 10:56:11 -0200 |
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From: Jiri Olsa <jolsa@kernel.org>
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> --- tools/perf/util/sort.c | 13 ++++++++++--- 1 file 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); } -- 1.9.3
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