Messages in this thread Patch in this message | | | Date | Sun, 31 Jul 2022 17:09:19 -0400 | From | Steven Rostedt <> | Subject | [for-next][PATCH 1/4] rtla/utils: Use calloc and check the potential memory allocation failure |
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From: jianchunfu <jianchunfu@cmss.chinamobile.com>
Replace malloc with calloc and add memory allocating check of mon_cpus before used.
Link: https://lkml.kernel.org/r/20220615073348.6891-1-jianchunfu@cmss.chinamobile.com
Fixes: 7d0dc9576dc3 ("rtla/timerlat: Add --dma-latency option") Signed-off-by: jianchunfu <jianchunfu@cmss.chinamobile.com> Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> --- 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
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