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perf pmu: Fix a potential memory leak in perf_pmu__lookup()

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[ Upstream commit ef5de1613d ]

The commit in Fixes has reordered some code, but missed an error handling
path.

'goto err' now, in order to avoid a memory leak in case of error.

Fixes: f63a536f03 ("perf pmu: Merge JSON events with sysfs at load time")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Ian Rogers <irogers@google.com>
Cc: kernel-janitors@vger.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/9538b2b634894c33168dfe9d848d4df31fd4d801.1693085544.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Christophe JAILLET 2023-08-26 23:32:45 +02:00 committed by Sasha Levin
parent 961bcbd10b
commit b1f5079b5e
1 changed files with 3 additions and 4 deletions
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7
tools/perf/util/pmu.c
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@ -1019,10 +1019,9 @@ struct perf_pmu *perf_pmu__lookup(struct list_head *pmus, int dirfd, const char
* type value and format definitions. Load both right
* now.
*/
if (pmu_format(pmu, dirfd, name)) {
free(pmu);
return NULL;
}
if (pmu_format(pmu, dirfd, name))
goto err;
pmu->is_core = is_pmu_core(name);
pmu->cpus = pmu_cpumask(dirfd, name, pmu->is_core);