tree b2a408b97806ee86003a804734972523453b8164
parent 8c0469cdd08df4dacabc8ca33256ce20de43d73f
author David S. Miller <davem@davemloft.net> 1209004678 -0700
committer David S. Miller <davem@davemloft.net> 1209004678 -0700

tun: Fix minor race in TUNSETLINK ioctl handling.

Noticed by Alan Cox.

The IFF_UP test is a bit racey, because other entities
outside of this driver's ioctl handler can modify that
state, even though this ioctl handler runs under
lock_kernel().

Signed-off-by: David S. Miller <davem@davemloft.net>