Fix: Disable IBT around indirect function calls

[lttng-modules.git] / src / wrapper / kallsyms.c

diff --git a/src/wrapper/kallsyms.c b/src/wrapper/kallsyms.c
index 2535c2a527faed90f20909ce809334adaae28169..295617f6434084f030959bcb33736820eeecf0a3 100644 (file)
--- a/src/wrapper/kallsyms.c
+++ b/src/wrapper/kallsyms.c
@@ -127,9 +127,15 @@ unsigned long wrapper_kallsyms_lookup_name(const char *name)
        if (!kallsyms_lookup_name_sym) {
                kallsyms_lookup_name_sym = (void *)do_get_kallsyms();
        }
-       if (kallsyms_lookup_name_sym)
-               return kallsyms_lookup_name_sym(name);
-       else {
+       if (kallsyms_lookup_name_sym) {
+               struct irq_ibt_state irq_ibt_state;
+               unsigned long ret;
+
+               irq_ibt_state = wrapper_irq_ibt_save();
+               ret = kallsyms_lookup_name_sym(name);
+               wrapper_irq_ibt_restore(irq_ibt_state);
+               return ret;
+       } else {
                printk_once(KERN_WARNING "LTTng: requires kallsyms_lookup_name\n");
                return 0;
        }