net: sysfs: ethtool_ops can be NULL

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commit d519e17e2d
(net: export device speed and duplex via sysfs)
made the wrong assumption that netdev->ethtool_ops was always set.

This makes possible to crash kernel and let rtnl in locked state.

modprobe dummy
ip link set dummy0 up
(udev runs and crash)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Eric Dumazet 2009-10-26 01:23:33 +00:00 • committed by David S. Miller

parent b75c6dbb45

commit ac5e3af999

1 changed files with 6 additions and 2 deletions

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net/core/net-sysfs.c

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