[NETLINK]: More complete fix for race.

Unfortunately my patch only closed half the race.  There is still
a chunk of code between netlink_dump_start and netlink_dump that runs
outside the cb lock which isn't protected by an sk reference.

Here is a better patch which protects the entire netlink_dump function
with a sk reference.

The other call to netlink_dump by recvmsg is safe as the open file
descriptor already holds a reference.  As such the final sock_put
in netlink_dump can be turned into a __sock_put since there is at
least one reference held by the caller.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

0 files changed, 0 insertions, 0 deletions