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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2026-04-11 01:08:53 +0300 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2026-04-14 09:21:52 +0300 |
| commit | f823d7efb81cd2a799dc386da4f9292fdc2c1dbe (patch) | |
| tree | 3ca68a3c560412a8d044aa4a072daaad96cb6bc7 /tools | |
| parent | fab205e49286ab01cbc6fa8debd65a5a6e6cca71 (diff) | |
| download | linux-f823d7efb81cd2a799dc386da4f9292fdc2c1dbe.tar.xz | |
perf header: Validate nr_domains when reading HEADER_CPU_DOMAIN_INFO
Further validate the HEADER_CPU_DOMAIN_INFO fields, this time checking
the nr_domains field.
Assisted-by: Claude Code:claude-opus-4-6
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/header.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index c6efddb70aee..a2796b72adc4 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -3731,6 +3731,12 @@ static int process_cpu_domain_info(struct feat_fd *ff, void *data __maybe_unused if (do_read_u32(ff, &nr_domains)) return -1; + if (nr_domains > max_sched_domains) { + pr_err("Invalid HEADER_CPU_DOMAIN_INFO: nr_domains %u > max_sched_domains (%u)\n", + nr_domains, max_sched_domains); + return -1; + } + cd_map[cpu]->nr_domains = nr_domains; cd_map[cpu]->domains = calloc(max_sched_domains, sizeof(*d_info)); |