[PATCH v2 0/4] perf timechart: Fix memory leaks

From: Namhyung Kim

Date: Fri Jun 05 2026 - 19:51:36 EST


Hello,

This patchset fixes memory leaks in the perf timechart code.
I've extended and verified the timechart test with ASAN.

v2)
* use zfree() and explicit clear for potential misuse (Arnaldo)
* fix a wrong condition in the draw_wakeups() (Sashiko)
* move misplaced hunk in the second commit to the first

While it doesn't depend on my other timechart patch series [1], fixing
the memory leaks entirely requires some work there. So I'd suggest
applying this after the previous work.

Thanks,
Namhyung

[1] https://lore.kernel.org/r/20260604214931.2202322-1-namhyung@xxxxxxxxxx


Namhyung Kim (4):
perf timechart: Release event samples at the end
perf timechart: Fix memory leaks during record
perf timechart: Fix memory leaks in draw_wakeups()
perf test: Update perf timechart test

tools/perf/builtin-timechart.c | 105 ++++++++++++++++++++++++----
tools/perf/tests/shell/timechart.sh | 24 ++++---
2 files changed, 106 insertions(+), 23 deletions(-)

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2.54.0.1032.g2f8565e1d1-goog