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| author | Jiri Olsa | 2015-04-22 21:10:18 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2015-04-29 15:37:59 +0200 |
| commit | c056ba6a174f4d5d79fe27f259fc133041a451da (patch) | |
| tree | 28daffe503887d3a97c65f2fd9b543bf3617ee77 /tools/perf/util/parse-events.c | |
| parent | perf tools: Add flex support for parse_events_error (diff) | |
| download | kernel-qcow2-linux-c056ba6a174f4d5d79fe27f259fc133041a451da.tar.gz kernel-qcow2-linux-c056ba6a174f4d5d79fe27f259fc133041a451da.tar.xz kernel-qcow2-linux-c056ba6a174f4d5d79fe27f259fc133041a451da.zip | |
perf tools: Always bail out when config_attr function fails
Not sure why we allowed the fail state, but it's wrong. Wrong type for
'name' term can cause segfault, and there's probably more fun hidden.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
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/1429729824-13932-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/parse-events.c')
| -rw-r--r-- | tools/perf/util/parse-events.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 6978cc377957..1e42f2ceec3d 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -549,6 +549,12 @@ do { \ } while (0) switch (term->type_term) { + case PARSE_EVENTS__TERM_TYPE_USER: + /* + * Always succeed for sysfs terms, as we dont know + * at this point what type they need to have. + */ + return 0; case PARSE_EVENTS__TERM_TYPE_CONFIG: CHECK_TYPE_VAL(NUM); attr->config = term->val.num; @@ -583,12 +589,12 @@ do { \ } static int config_attr(struct perf_event_attr *attr, - struct list_head *head, int fail) + struct list_head *head) { struct parse_events_term *term; list_for_each_entry(term, head, list) - if (config_term(attr, term) && fail) + if (config_term(attr, term)) return -EINVAL; return 0; @@ -605,7 +611,7 @@ int parse_events_add_numeric(struct list_head *list, int *idx, attr.config = config; if (head_config && - config_attr(&attr, head_config, 1)) + config_attr(&attr, head_config)) return -EINVAL; return add_event(list, idx, &attr, NULL); @@ -659,7 +665,8 @@ int parse_events_add_pmu(struct list_head *list, int *idx, * Configure hardcoded terms first, no need to check * return value when called with fail == 0 ;) */ - config_attr(&attr, head_config, 0); + if (config_attr(&attr, head_config)) + return -EINVAL; if (perf_pmu__config(pmu, &attr, head_config)) return -EINVAL; |