perf intel-bts: Fix off-by-one in auxtrace_info minimum size check

Browse source

Same pattern as the Intel PT fix: min_sz is set to
sizeof(u64) * INTEL_BTS_SNAPSHOT_MODE, but the code accesses
auxtrace_info->priv[INTEL_BTS_SNAPSHOT_MODE], which requires at least
INTEL_BTS_SNAPSHOT_MODE + 1 elements.

Use (INTEL_BTS_SNAPSHOT_MODE + 1) to ensure the highest accessed index
is within bounds.

Fixes: d0170af700 ("perf tools: Add Intel BTS support")
Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Assisted-by: Claude:claude-opus-4.6
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

...

This commit is contained in:

Arnaldo Carvalho de Melo 2026-07-27 13:17:04 -03:00 • committed by Namhyung Kim

parent c4362d5e1a

commit b9fb822595

1 changed files with 1 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

tools/perf/util/intel-bts.c

View file