Kernel commit bcf9033e5449bdcaa9bed46467a7141a8049dadb
("sched: move CPU field back into thread_info if THREAD_INFO_IN_TASK=y")
moved the member cpu of task_struct back into thread_info.
Without the patch, crash fails with the following error message
during session initialization:
crash: invalid structure member offset: task_struct_cpu
FILE: task.c LINE: 2904 FUNCTION: add_context()
And delete use_system_readline_v3.patch. Use readline provided by
internal gdb instead of system readline. System readline do not
match crash, and will cause a Segmentation fault when parse corefile.
Signed-off-by: Bin Wang <wangbin224@huawei.com>
