The patch below does not apply to the 5.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 1ae43851b18afe861120ebd7c426dc44f06bb2bd Mon Sep 17 00:00:00 2001
From: Masami Hiramatsu mhiramat@kernel.org Date: Thu, 16 Sep 2021 15:23:12 +0900 Subject: [PATCH] bootconfig: init: Fix memblock leak in xbc_make_cmdline()
Free unused memblock in a error case to fix memblock leak in xbc_make_cmdline().
Link: https://lkml.kernel.org/r/163177339181.682366.8713781325929549256.stgit@devn...
Fixes: 51887d03aca1 ("bootconfig: init: Allow admin to use bootconfig for kernel command line") Signed-off-by: Masami Hiramatsu mhiramat@kernel.org Signed-off-by: Steven Rostedt (VMware) rostedt@goodmis.org
diff --git a/init/main.c b/init/main.c index 81a79a77db46..3c4054a95545 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; }