This is a note to let you know that I've just added the patch titled perf bench numa: Address compiler error on s390 to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: perf-bench-numa-address-compiler-error-on-s390.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit b15d853bb376c132daf78b713b519b8d92e225ee Author: Thomas Richter <tmricht@xxxxxxxxxxxxx> Date: Fri May 20 10:11:58 2022 +0200 perf bench numa: Address compiler error on s390 [ Upstream commit f8ac1c478424a9a14669b8cef7389b1e14e5229d ] The compilation on s390 results in this error: # make DEBUG=y bench/numa.o ... bench/numa.c: In function ‘__bench_numa’: bench/numa.c:1749:81: error: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size between 10 and 20 [-Werror=format-truncation=] 1749 | snprintf(tname, sizeof(tname), "process%d:thread%d", p, t); ^~ ... bench/numa.c:1749:64: note: directive argument in the range [-2147483647, 2147483646] ... # The maximum length of the %d replacement is 11 characters because of the negative sign. Therefore extend the array by two more characters. Output after: # make DEBUG=y bench/numa.o > /dev/null 2>&1; ll bench/numa.o -rw-r--r-- 1 root root 418320 May 19 09:11 bench/numa.o # Fixes: 3aff8ba0a4c9c919 ("perf bench numa: Avoid possible truncation when using snprintf()") Suggested-by: Namhyung Kim <namhyung@xxxxxxxxx> Signed-off-by: Thomas Richter <tmricht@xxxxxxxxxxxxx> Cc: Heiko Carstens <hca@xxxxxxxxxxxxx> Cc: Sumanth Korikkar <sumanthk@xxxxxxxxxxxxx> Cc: Sven Schnelle <svens@xxxxxxxxxxxxx> Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20220520081158.2990006-1-tmricht@xxxxxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c index 11726ec6285f..88c11305bdd5 100644 --- a/tools/perf/bench/numa.c +++ b/tools/perf/bench/numa.c @@ -1656,7 +1656,7 @@ static int __bench_numa(const char *name) "GB/sec,", "total-speed", "GB/sec total speed"); if (g->p.show_details >= 2) { - char tname[14 + 2 * 10 + 1]; + char tname[14 + 2 * 11 + 1]; struct thread_data *td; for (p = 0; p < g->p.nr_proc; p++) { for (t = 0; t < g->p.nr_threads; t++) {