The patch below does not apply to the 5.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable@xxxxxxxxxxxxxxx>. Possible dependencies: ca76d7d2812b ("perf record: Fix cpu mask bit setting for mixed mmaps") cbd7bfc7fd99 ("tools/perf: Fix out of bound access to cpu mask array") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From ca76d7d2812b46124291f99c9b50aaf63a936f23 Mon Sep 17 00:00:00 2001 From: Adrian Hunter <adrian.hunter@xxxxxxxxx> Date: Thu, 15 Sep 2022 15:26:11 +0300 Subject: [PATCH] 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@xxxxxxxxx> Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx> Cc: Athira Rajeev <atrajeev@xxxxxxxxxxxxxxxxxx> Cc: Ian Rogers <irogers@xxxxxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Link: https://lore.kernel.org/r/20220915122612.81738-2-adrian.hunter@xxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index f87ef43eb820..0f711f88894c 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -3371,6 +3371,8 @@ static int record__mmap_cpu_mask_init(struct mmap_cpu_mask *mask, struct perf_cp return 0; perf_cpu_map__for_each_cpu(cpu, idx, cpus) { + if (cpu.cpu == -1) + continue; /* Return ENODEV is input cpu is greater than max cpu */ if ((unsigned long)cpu.cpu > mask->nbits) return -ENODEV;