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perf session: Fix crash with invalid CPU list

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commit 5d67be9 added the option to specify a range of CPUs of interest,
but does not catch an invalid CPU list:

$ perf script -c foo
Segmentation fault (core dumped)

Cc: Anton Blanchard <anton@samba.org>
Link: http://lkml.kernel.org/r/1321206327-5881-1-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
David Ahern 2011-11-13 10:45:27 -07:00 • committed by Arnaldo Carvalho de Melo
commit 47fbe53bef
1 changed files with 4 additions and 0 deletions
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4
tools/perf/util/session.c
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@ -1333,6 +1333,10 @@ int perf_session__cpu_bitmap(struct perf_session *session,
} }
map = cpu_map__new(cpu_list); map = cpu_map__new(cpu_list);
if (map == NULL) {
pr_err("Invalid cpu_list\n");
return -1;
}
for (i = 0; i < map->nr; i++) { for (i = 0; i < map->nr; i++) {
int cpu = map->map[i]; int cpu = map->map[i];