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authorjianchunfu <jianchunfu@cmss.chinamobile.com>2022-06-15 15:33:48 +0800
committerSteven Rostedt (Google) <rostedt@goodmis.org>2022-07-11 21:14:29 -0400
commitb5f37a0b6f667f5c72340ca9dcd7703f261cb981 (patch)
tree1fff9e6a92508b628be5e2ef8d8714370da5b1cf /tools/tracing
parent88084a3df1672e131ddc1b4e39eeacfd39864acf (diff)
downloadlinux-b5f37a0b6f667f5c72340ca9dcd7703f261cb981.tar.gz
rtla/utils: Use calloc and check the potential memory allocation failure
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>
Diffstat (limited to 'tools/tracing')
-rw-r--r--tools/tracing/rtla/src/utils.c5
1 files 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);