netlink: access nlk groups safely in netlink bind and getname

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Now there is no lock protecting nlk ngroups/groups' accessing in
netlink bind and getname. It's safe from nlk groups' setting in
netlink_release, but not from netlink_realloc_groups called by
netlink_setsockopt.

netlink_lock_table is needed in both netlink bind and getname when
accessing nlk groups.

Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Xin Long 2017-09-06 11:53:29 +08:00 • committed by David S. Miller

parent be82485fbc

commit f773608026

1 changed files with 12 additions and 4 deletions

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net/netlink/af_netlink.c

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