Ignore module name __builtin__kprobes in kallmodsyms

Signed-off-by: Eugene Loh <eugene.loh@oracle.com>

libdtrace/dt_module.c

@@ -1049,6 +1049,13 @@ dt_modsym_update(dtrace_hdl_t *dtp, const char *line, int flag)
 	if (strcmp(mod_name, "bpf") == 0)
 		return 0;
 
+	/*
+	 * "__builtin__kprobes" is used as a module name for symbols for pages
+	 * allocated for kprobes' purposes, even though it is not a module.
+	 */
+	if (strcmp(mod_name, "__builtin__kprobes") == 0)
+		return 0;
+
 	/*
 	 * Symbols of "absolute" type are typically defined per CPU.
 	 * Their "addresses" here are very low and are actually offsets.

test/unittest/consumer/tst.symbols.c

@@ -125,6 +125,9 @@ int read_symbols() {
 		if (strcmp(modname, "__builtin__ftrace]") == 0)
 			continue;
 
+		if (strcmp(modname, "__builtin__kprobes]") == 0)
+			continue;
+
 		/*
 		 * In libdtrace/dt_module.c function dt_modsym_update(),
 		 * we skip a number of symbols.  Do not test them.  The