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bootconfig: init: Fix memblock leak in xbc_make_cmdline()

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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@devnote2

Fixes: 51887d03ac ("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>
This commit is contained in:
Masami Hiramatsu
2021-09-16 15:23:12 +09:00
committed by Steven Rostedt (VMware)
parent 6675880fc4
commit 1ae43851b1
1 changed files with 1 additions and 0 deletions
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init/main.c
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@@ -382,6 +382,7 @@ static char * __init xbc_make_cmdline(const char *key)
ret = xbc_snprint_cmdline(new_cmdline, len + 1, root); ret = xbc_snprint_cmdline(new_cmdline, len + 1, root);
if (ret < 0 || ret > len) { if (ret < 0 || ret > len) {
pr_err("Failed to print extra kernel cmdline.\n"); pr_err("Failed to print extra kernel cmdline.\n");
memblock_free_ptr(new_cmdline, len + 1);
return NULL; return NULL;
} }