Hello, On (03/31/16 14:36), Petr Mladek wrote: [..] > #ifdef CONFIG_PRINTK_NMI > +#define deferred_console_in_nmi() in_nmi() > #else > +#define deferred_console_in_nmi() 0 [..] > + if (!in_sched && !deferred_console_in_nmi()) { > lockdep_off(); > /* > * Try to acquire and then immediately release the console or use SCHED level for nmi messages instead of defining deferred_console_in_nmi()? so !in_sched will work for both SCHED and NMI messages. -ss