Race and

This , where the on the tasks, is a race . The piece of code issue is a . And on SMP ,they one of the in and .

can have the samethe dead return, even if there is only one CPU: one task the , we have the . In this case the which might run .

The is to when these occur,locks to make sure that only one can enter the at any time. There are many in the to help you do this. And then there are thethe dead return, but I’ll they don’t exist.