perf auxtrace: Fix queue grow overflow and old array leak

auxtrace_queues__grow() has two bugs:

1. When idx is UINT_MAX, the caller passes new_nr_queues = idx + 1 = 0.
   The function skips growing (since any nr_queues >= 0), returns
   success, and the caller accesses queue_array[UINT_MAX] — an OOB
   heap write.  Fix by rejecting new_nr_queues == 0 up front.

2. The function allocates a new queue_array via calloc and copies
   elements from the old array, but never frees the old array.  Fix
   by saving the old pointer and freeing it after the copy.

Fixes: e502789302a6ece9 ("perf auxtrace: Add helpers for queuing AUX area tracing data")
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>

0 files changed, 0 insertions, 0 deletions