tree 24a3a9ecbee9215898b4c6b30357740eeeb632bb
parent 28cb6ccd2c7e86b3a4db94c7062cd27937bed424
author Eric Dumazet <eric.dumazet@gmail.com> 1290101442 -0800
committer David S. Miller <davem@davemloft.net> 1290101442 -0800

bonding: fix a race in IGMP handling

RCU conversion in IGMP code done in net-next-2.6 raised a race in
__bond_resend_igmp_join_requests().

It iterates in_dev->mc_list without appropriate protection (RTNL, or
read_lock on in_dev->mc_list_lock).

Another cpu might delete an entry while we use it and trigger a fault.

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