[PATCH v2 2/5] bootconfig: init: Fix memblock leak in xbc_make_cmdline()

From: Masami Hiramatsu
Date: Tue Sep 14 2021 - 20:53:52 EST


Free unused memblock in a error case to fix memblock leak
in xbc_make_cmdline().

Fixes: 51887d03aca1 ("bootconfig: init: Allow admin to use bootconfig for kernel command line")
Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
---
init/main.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/init/main.c b/init/main.c
index 3f7216934441..0b054fff8e92 100644
--- a/init/main.c
+++ b/init/main.c
@@ -382,6 +382,7 @@ static char * __init xbc_make_cmdline(const char *key)
ret = xbc_snprint_cmdline(new_cmdline, len + 1, root);
if (ret < 0 || ret > len) {
pr_err("Failed to print extra kernel cmdline.\n");
+ memblock_free_ptr(new_cmdline, len + 1);
return NULL;
}