From 49f4744307f9718d8e100755110b3b7b40ec4237 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Thu, 16 Oct 2014 16:07:01 +0200 Subject: [PATCH] perf tools: Fix report -F abort 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 abort 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 Acked-by: Namhyung Kim Cc: Andi Kleen Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1413468427-31049-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/sort.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 4906cd81cb56..82241fe54e4b 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -989,6 +989,9 @@ struct sort_entry sort_mem_dcacheline = { static int64_t sort__abort_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.abort != right->branch_info->flags.abort; } @@ -996,10 +999,15 @@ sort__abort_cmp(struct hist_entry *left, struct hist_entry *right) static int hist_entry__abort_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) { + if (he->branch_info->flags.abort) + out = "A"; + else + out = "."; + } - if (he->branch_info->flags.abort) - out = "A"; return repsep_snprintf(bf, size, "%-*s", width, out); } -- 2.20.1