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author | Ziyang Xuan <william.xuanziyang@huawei.com> | 2022-09-15 04:08:35 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2022-09-21 14:59:22 +0300 |
commit | 63b7c2ebcc1d69bbf19e7418ef6c2496364f0ce2 (patch) | |
tree | efe2937b3518dbf1c7c9973b0d34e59fa88863c1 /Documentation | |
parent | 2a566f0148bad759ba6f3758914edda1a8a4181f (diff) | |
download | linux-63b7c2ebcc1d69bbf19e7418ef6c2496364f0ce2.tar.xz |
net/af_packet: registration process optimization in packet_init()
Now, register_pernet_subsys() and register_netdevice_notifier() are both
after sock_register(). It can create PF_PACKET socket and process socket
once sock_register() successfully. It is possible PF_PACKET socket is
creating but register_pernet_subsys() and register_netdevice_notifier()
are not registered yet. Thus net->packet.sklist_lock and net->packet.sklist
will be accessed without initialization that is done in packet_net_init().
Although this is a low probability scenario.
Move register_pernet_subsys() and register_netdevice_notifier() to the
front in packet_init(). Correspondingly, adjust the unregister process
in packet_exit().
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions