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| author | Thomas Richter <tmricht@linux.ibm.com> | 2022-05-20 10:11:58 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-25 09:14:37 +0200 |
| commit | 74168c2207a5531a2b8a526c82b5c76bec9f5e95 (patch) | |
| tree | 13d25466bc7cdccbc8ccbfeae35ce2283645321f | |
| parent | d1915d9c9fa3b2690c1092fce1b78d5e63adc983 (diff) | |
| download | linux-stable-74168c2207a5531a2b8a526c82b5c76bec9f5e95.tar.gz linux-stable-74168c2207a5531a2b8a526c82b5c76bec9f5e95.tar.bz2 linux-stable-74168c2207a5531a2b8a526c82b5c76bec9f5e95.zip | |
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@gmail.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Link: https://lore.kernel.org/r/20220520081158.2990006-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | tools/perf/bench/numa.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c index 5797253b9700..69d62e57a0c3 100644 --- a/tools/perf/bench/numa.c +++ b/tools/perf/bench/numa.c @@ -1630,7 +1630,7 @@ 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++) { |