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authorEric Dumazet <eric.dumazet@gmail.com>2009-12-03 00:49:01 +0000
committerDavid S. Miller <davem@davemloft.net>2009-12-03 16:17:44 -0800
commit47e1c323069bcef0acb8a2b48921688573f5ca63 (patch)
treebebfe86ae36055adae2100200e87727d21a7b762 /security/selinux
parent13475a30b66cdb9250a34052c19ac98847373030 (diff)
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tcp: fix a timewait refcnt race
After TCP RCU conversion, tw->tw_refcnt should not be set to 1 in inet_twsk_alloc(). It allows a RCU reader to get this timewait socket, while we not yet stabilized it. Only choice we have is to set tw_refcnt to 0 in inet_twsk_alloc(), then atomic_add() it later, once everything is done. Location of this atomic_add() is tricky, because we dont want another writer to find this timewait in ehash, while tw_refcnt is still zero ! Thanks to Kapil Dakhane tests and reports. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'security/selinux')
0 files changed, 0 insertions, 0 deletions