TIP: yum hangs on futex()

[Michael ODonnell]

> Doing an strace revealed the hang was after opening the
> files in /var/ lib/rpm and yum was waiting on a futex() call.

The fact that some process is blocked in futex() is probably
a red-herring, a second-order effect of whatever the *real*
problem is, one of those situations where the waiter is doomed
to wait forever because whoever he's waiting for got b0rked
by the real problem and is never gonna release the mutex.