On 10/07/2012 10:20 PM, Kirill A. Shutemov wrote: > On Sun, Oct 07, 2012 at 09:03:11AM -0700, Paul E. McKenney wrote: >> On Sun, Oct 07, 2012 at 05:47:11AM +0300, Kirill A. Shutemov wrote: >>> 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? >> >> This is a new one for me. Does the following (very lightly tested) >> patch help? > > Works for me. Thanks. > Could you share the patch please? Looks like it didn't hit the mailing lists.. Regards, Srivatsa S. Bhat -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
