huh..My VDSO patch was not the culprit..! the issue was with spin_lock_irqsave calls...! modify the same to raw_spin_lock_irqsave..problem solved..! the rtpatch was not applied properly. -- View this message in context: http://linuxppc.10917.n7.nabble.com/PREMPT-RT-tp68107p69101.html Sent from the linuxppc-dev mailing list archive at Nabble.com.