On Wed, Nov 16, 2011 at 03:48:11PM +0100, Thomas Gleixner wrote: > On Wed, 16 Nov 2011, Steven Rostedt wrote: > > Thomas, doesn't printk not print to serial in atomic contexts? Or did I guess you mean console_trylock_for_printk() will fail in atomic context? If so, yeah, that doesn't change. But the issue is console_cpu_notify() call console_lock() directly. That means below scenario could also happen in mainline: CPU A CPU B doing printk with console_sem held take_cpu_down(); cpu_notify(CPU_DYING); console_cpu_notify(); console_lock(); down(&console_sem); *bang* up(&console_sem); Sounds I should also send this patch to mainline. Thanks, Yong -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
