Ivan Ren <reny...@gmail.com> wrote: > When we 'migrate_cancel' a multifd migration, live_migration thread may > go into endless loop in multifd_send_pages functions. > > Reproduce steps: > > (qemu) migrate_set_capability multifd on > (qemu) migrate -d url > (qemu) [wait a while] > (qemu) migrate_cancel > > Then may get live_migration 100% cpu usage in following stack: > > pthread_mutex_lock > qemu_mutex_lock_impl > multifd_send_pages > multifd_queue_page > ram_save_multifd_page > ram_save_target_page > ram_save_host_page > ram_find_and_save_block > ram_find_and_save_block > ram_save_iterate > qemu_savevm_state_iterate > migration_iteration_run > migration_thread > qemu_thread_start > start_thread > clone > > Signed-off-by: Ivan Ren <ivan...@tencent.com>
Reviewed-by: Juan Quintela <quint...@redhat.com> Will sent for rc3.
