From: jianchunfu <jianchunfu@xxxxxxxxxxxxxxxxxxxx> [ Upstream commit b5f37a0b6f667f5c72340ca9dcd7703f261cb981 ] Replace malloc with calloc and add memory allocating check of mon_cpus before used. Link: https://lkml.kernel.org/r/20220615073348.6891-1-jianchunfu@xxxxxxxxxxxxxxxxxxxx Fixes: 7d0dc9576dc3 ("rtla/timerlat: Add --dma-latency option") Signed-off-by: jianchunfu <jianchunfu@xxxxxxxxxxxxxxxxxxxx> Acked-by: Daniel Bristot de Oliveira <bristot@xxxxxxxxxx> Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- tools/tracing/rtla/src/utils.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/tracing/rtla/src/utils.c b/tools/tracing/rtla/src/utils.c index 5352167a1e75..5ae2fa96fde1 100644 --- a/tools/tracing/rtla/src/utils.c +++ b/tools/tracing/rtla/src/utils.c @@ -106,8 +106,9 @@ int parse_cpu_list(char *cpu_list, char **monitored_cpus) nr_cpus = sysconf(_SC_NPROCESSORS_CONF); - mon_cpus = malloc(nr_cpus * sizeof(char)); - memset(mon_cpus, 0, (nr_cpus * sizeof(char))); + mon_cpus = calloc(nr_cpus, sizeof(char)); + if (!mon_cpus) + goto err; for (p = cpu_list; *p; ) { cpu = atoi(p); -- 2.35.1
