trace-cmd: Always initialize cpu_data list

Always intialize the cpu_data list event if the cpu data
is empty. The list may still be referenced, and it will
segfault if the list is not initialized.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/trace-input.c b/trace-input.c
index 239fb86..26f6373 100644
--- a/trace-input.c
+++ b/trace-input.c
@@ -1341,13 +1341,13 @@ static int init_cpu(struct tracecmd_input *handle, int cpu)
         cpu_data->size = cpu_data->file_size;
         cpu_data->timestamp = 0;
 
+        list_head_init(&cpu_data->pages);
+
         if (!cpu_data->size) {
                 printf("CPU %d is empty\n", cpu);
                 return 0;
         }
 
-        list_head_init(&cpu_data->pages);
-
         cpu_data->page = allocate_page(handle, cpu, cpu_data->offset);
         if (!cpu_data->page && !handle->read_page) {
                 perror("mmap");