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(parent: 28cb6cc) | patch
bonding: fix a race in IGMP handling
authorEric Dumazet <eric.dumazet@gmail.com>
Thu, 18 Nov 2010 17:30:42 +0000 (09:30 -0800)
committerDavid S. Miller <davem@davemloft.net>
Thu, 18 Nov 2010 17:30:42 +0000 (09:30 -0800)
commit3006bc38895895f1a0352c2e17e1a503f35f7e2f
tree24a3a9ecbee9215898b4c6b30357740eeeb632bbtree | snapshot (tar.gz zip)
parent28cb6ccd2c7e86b3a4db94c7062cd27937bed424commit | diff
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>
drivers/net/bonding/bond_main.c diff | blob | blame | history