Messages in this thread | | | Date | Sun, 7 Oct 2012 05:47:11 +0300 | From | "Kirill A. Shutemov" <> | Subject | Deadlock on poweroff |
| |
Hi Paul and all,
With commit 755609a9087fa983f567dc5452b2fa7b089b591f I've got deadlock on poweroff.
It guess it happens because of race for cpu_hotplug.lock:
CPU A CPU B disable_nonboot_cpus() _cpu_down() cpu_hotplug_begin() mutex_lock(&cpu_hotplug.lock); __cpu_notify() padata_cpu_callback() __padata_remove_cpu() padata_replace() synchronize_rcu() rcu_gp_kthread() get_online_cpus(); mutex_lock(&cpu_hotplug.lock);
Have you seen the issue before?
-- Kirill A. Shutemov
| |