FIX instrumentation '__switch_to' error

add processing critical sections

diff --git a/kprobe/dbi_kprobes.c b/kprobe/dbi_kprobes.c
index 880a0c8..9d52be2 100644 (file)
--- a/kprobe/dbi_kprobes.c
+++ b/kprobe/dbi_kprobes.c
@@ -849,8 +849,12 @@ static void unpatch_suspended_task_ret_addr(struct task_struct *p, struct kretpr
        {
                ri = find_ri_pc_mod(p, rp);
                if(ri) {
+                       unsigned long flags;
                        rm_task_trampoline(p, ri);
+
+                       spin_lock_irqsave(&kretprobe_lock, flags);
                        recycle_rp_inst(ri);
+                       spin_unlock_irqrestore(&kretprobe_lock, flags);
                }
        }
 }