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authorEric Dumazet <eric.dumazet@gmail.com>2011-01-26 18:08:02 +0000
committerDavid S. Miller <davem@davemloft.net>2011-01-27 15:02:56 -0800
commitccf434380d1a67df2dcb9113206b77d0cb0a1cef (patch)
tree1e1a36691f42ed7448f27f71a9ca9445e88ab5f1 /COPYING
parentnet: Store ipv4/ipv6 COW'd metrics in inetpeer cache. (diff)
downloadlinux-dev-ccf434380d1a67df2dcb9113206b77d0cb0a1cef.tar.xz
linux-dev-ccf434380d1a67df2dcb9113206b77d0cb0a1cef.zip
net: fix dev_seq_next()
Commit c6d14c84566d (net: Introduce for_each_netdev_rcu() iterator) added a race in dev_seq_next(). The rcu_dereference() call should be done _before_ testing the end of list, or we might return a wrong net_device if a concurrent thread changes net_device list under us. Note : discovered thanks to a sparse warning : net/core/dev.c:3919:9: error: incompatible types in comparison expression (different address spaces) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'COPYING')
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