SCHED_FIFO task blocks magic sysrq
It seems like the sysrq code can get starved by a SCHED_FIFO task. I learned this by having an accidentally runaway SCHED_FIFO task which locked up my system. No SAK, no sync, no unmount, no reboot. Big Red Button.
David
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David Mansfield (718) 963-2020 [email protected] Ultramaster Group, LLC www.ultramaster.com