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 5.15-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-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0d2a678acd2f6f5c108cf0095fe634357b7bc897
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 f2640179ada9..c2c81567afa5 100644
--- a/tools/perf/bench/numa.c
+++ b/tools/perf/bench/numa.c
@@ -1672,7 +1672,7 @@ 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++) {
