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perf report: Prevent segfault with --no-parent

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Prevent a perf report segfault with the (non sensical) --no-parent
option

Signed-off-By: Andi Kleen <ak@linux.intel.com>
Acked-by: Namhyung <namhyung@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240130185552.150578-1-ak@linux.intel.com
This commit is contained in:
Andi Kleen 2024-01-30 10:55:52 -08:00 committed by Namhyung Kim
parent 4962aec0d6
commit 1c84b47f99
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/sort.c
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@ -3372,7 +3372,7 @@ int sort_dimension__add(struct perf_hpp_list *list, const char *tok,
sort_dimension_add_dynamic_header(sd);
}
if (sd->entry == &sort_parent) {
if (sd->entry == &sort_parent && parent_pattern) {
int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
if (ret) {
char err[BUFSIZ];