tun: Fix minor race in TUNSETLINK ioctl handling.

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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>

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David S. Miller 2008-04-23 19:37:58 -07:00

parent 8c0469cdd0

commit 48abfe05cd

1 changed files with 9 additions and 2 deletions

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11

drivers/net/tun.c

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