Patch "rtla/utils: Use calloc and check the potential memory allocation failure" has been added to the 5.18-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    rtla/utils: Use calloc and check the potential memory allocation failure

to the 5.18-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:
     rtla-utils-use-calloc-and-check-the-potential-memory.patch
and it can be found in the queue-5.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 8b9bd85fc75cc7329a607fe0d81a66eaca0b4155
Author: jianchunfu <jianchunfu@xxxxxxxxxxxxxxxxxxxx>
Date:   Wed Jun 15 15:33:48 2022 +0800

    rtla/utils: Use calloc and check the potential memory allocation failure
    
    [ 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>

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);