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| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-09-15 15:26:11 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-09-21 16:08:00 -0300 |
| commit | ca76d7d2812b46124291f99c9b50aaf63a936f23 (patch) | |
| tree | 74ae499d28c38d0d65d08b3e33b838bed7c39c31 /lib/test_fortify/write_overflow-strncpy.c | |
| parent | e1dda48e4370043443e7d121d4b67a96fb70c75b (diff) | |
perf record: Fix cpu mask bit setting for mixed mmaps
With mixed per-thread and (system-wide) per-cpu maps, the "any cpu" value
-1 must be skipped when setting CPU mask bits.
Prior to commit cbd7bfc7fd99acdd ("tools/perf: Fix out of bound access
to cpu mask array") the invalid setting went unnoticed, but since then
it causes perf record to fail with an error.
Example:
Before:
$ perf record -e intel_pt// --per-thread uname
Failed to initialize parallel data streaming masks
After:
$ perf record -e intel_pt// --per-thread uname
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.068 MB perf.data ]
Fixes: ae4f8ae16a078964 ("libperf evlist: Allow mixing per-thread and per-cpu mmaps")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220915122612.81738-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'lib/test_fortify/write_overflow-strncpy.c')
0 files changed, 0 insertions, 0 deletions