[PATCHES 0/5 v2] More perf.data header validation

Arnaldo Carvalho de Melo
2026-04-16T00:14:33Z

Hi,

This is picking up from what was reported in the previous
series, pre-existing lack of perf.data file validation, processing files
and buffers in header.c in a similar fashion.

There is more to process in the trace data, but that is a
different can of worms that needs to be dealt with in a similar,
upcoming patch series,

This is probably 7.2 material, but if feeling this can still
sneak into 7.1, feel free to do it :-)

Now lets see what Sashiko discovers while I still don't have it
running locally right after Claude, before submitting it publicly, which
will soon happen :-)

- Arnaldo

v2: Addressed sashiko comments, adding a patch to the series.

Arnaldo Carvalho de Melo (5):
perf header: Add section bounds checking to the fd read path
perf header: Validate string length before allocating in do_read_string()
perf header: Sanity check HEADER_EVENT_DESC
perf header: Validate bitmap size before allocating in do_read_bitmap()
perf header: Fix 32-bit incompatibility in bitmap serialization

tools/perf/util/header.c | 57 +++++++++++++++++++++++++++++++++-------
1 file changed, 48 insertions(+), 9 deletions(-)

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2.53.0