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| author | HyeongJun An <sammiee5311@gmail.com> | 2026-08-07 23:40:03 +0900 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2026-08-18 17:30:13 +0300 |
| commit | 80e0d353c86a9a168ad6d213f494796294381538 (patch) | |
| tree | 1f0a6bfe0948642d41697c5d7791bdf641dcaedd /tools/perf/scripts/python/stackcollapse.py | |
| parent | a89f07db0cb95c54dac4a8406c79a04e44a73c3c (diff) | |
platform/x86: ISST: Validate level in perf mask ioctls
isst_if_get_perf_level_mask() and isst_if_get_base_freq_mask() use the
user-provided level as an index into perf_levels[] via
_read_pp_level_info() and _read_bf_level_info(), but neither helper
validates it first.
The adjacent level-info helpers reject levels above max_level before
reading the same per-level register block. Add the same bounds checks to
the mask helpers, and reject disabled SST-PP levels in
isst_if_get_perf_level_mask() to match isst_if_get_perf_level_info().
This prevents out-of-bounds reads from the per-level offset table on
invalid ioctl input.
Fixes: ea009e4769fa3 ("platform/x86: ISST: Add SST-PP support via TPMI")
Fixes: 06a61df83209 ("platform/x86: ISST: Add SST-BF support via TPMI")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-5
Signed-off-by: HyeongJun An <sammiee5311@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://patch.msgid.link/20260807144003.3498972-3-sammiee5311@gmail.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions