perf header: Sanity check HEADER_MEM_TOPOLOGY

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Add validation to process_mem_topology() to harden against malformed
perf.data files:

- Upper bound check on nr_nodes (reuses MAX_NUMA_NODES, 4096)
- Minimum section size check before allocating

This is particularly important here since nr is u64, making unbounded
values especially dangerous.

Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Ian Rogers <irogers@google.com>
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>

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Arnaldo Carvalho de Melo 2026-04-10 19:08:58 -03:00 • committed by Namhyung Kim

parent 4ba223016b

commit a881fc5603

1 changed files with 12 additions and 0 deletions

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tools/perf/util/header.c

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