oProfile: oops when profile_pc() returns ~0LU
[linux-2.6.git] / drivers / oprofile / cpu_buffer.c
index a83c3db..c93d3d2 100644 (file)
@@ -64,6 +64,8 @@ int alloc_cpu_buffers(void)
                b->head_pos = 0;
                b->sample_received = 0;
                b->sample_lost_overflow = 0;
+               b->backtrace_aborted = 0;
+               b->sample_invalid_eip = 0;
                b->cpu = i;
                INIT_DELAYED_WORK(&b->work, wq_sync_buffer);
        }
@@ -175,6 +177,11 @@ static int log_sample(struct oprofile_cpu_buffer * cpu_buf, unsigned long pc,
 
        cpu_buf->sample_received++;
 
+       if (pc == ESCAPE_CODE) {
+               cpu_buf->sample_invalid_eip++;
+               return 0;
+       }
+
        if (nr_available_slots(cpu_buf) < 3) {
                cpu_buf->sample_lost_overflow++;
                return 0;