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| author |   Kan Liang <kan.liang@linux.intel.com> | 2024-09-05 10:07:37 -0700 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2024-09-06 11:45:28 -0300 |
| commit | 003265bb6f028d7bcd7cbd92d6ba2b4e26382796 (patch) | |
| tree | e35c1d82e373eadab186d26a0897106a167e728e /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | perf mem: Fix missed p-core mem events on ADL and RPL (diff) | |
| download | wireguard-linux-003265bb6f028d7bcd7cbd92d6ba2b4e26382796.tar.xz wireguard-linux-003265bb6f028d7bcd7cbd92d6ba2b4e26382796.zip | |
perf mem: Fix the wrong reference in parse_record_events()
A segmentation fault can be triggered when running
'perf mem record -e ldlat-loads'
The commit 35b38a71c92fa033 ("perf mem: Rework command option handling")
moves the OPT_CALLBACK of event from __cmd_record() to cmd_mem().
When invoking the __cmd_record(), the 'mem' has been referenced (&).
So the &mem passed into the parse_record_events() is a double reference
(&&) of the original struct perf_mem mem.
But in the cmd_mem(), the &mem is the single reference (&) of the
original struct perf_mem mem.
Fixes: 35b38a71c92fa033 ("perf mem: Rework command option handling")
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240905170737.4070743-3-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions