Avoid NULL ptr dereference on module names by always

having a valid name (base kernel: "").

Avoid NULL ptr dereference on module names by always
having a valid name (base kernel: "").
20a27827 · Linus Torvalds · Christoph Hellwig · 218af2f3 · 20a27827
Commit 20a27827 authored Sep 26, 2002 by Linus Torvalds Committed by Christoph Hellwig Sep 26, 2002
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kernel/module.c kernel/module.c +2 -2

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--- a/kernel/module.c
+++ b/kernel/module.c
@@ -52,7 +52,7 @@ EXPORT_SYMBOL(__stop___kallsyms);
 struct module kernel_module =
 {
 	.size_of_struct		= sizeof(struct module),
-	.name 			= NULL,
+	.name 			= "",
 	.uc	 		= {ATOMIC_INIT(1)},
 	.flags			= MOD_RUNNING,
 	.syms			= __start___ksymtab,
@@ -1353,7 +1353,7 @@ print_symbol(const char *fmt, unsigned long address)
 	}
 	if (sym_start) {
-		if (mod_name)
+		if (*mod_name)
 		    snprintf(buffer, MAX_SYMBOL_SIZE - 1, "%s%s+%#x/%#x [%s]",
 			 tag, sym_name,
 			 (unsigned int)(address - sym_start),