net: fix nulls list corruptions in sk_prot_alloc
Special care is taken inside sk_port_alloc to avoid overwriting
skc_node/skc_nulls_node. We should also avoid overwriting
skc_bind_node/skc_portaddr_node.
The patch fixes the following crash:
BUG: unable to handle kernel paging request at
fffffffffffffff0
IP: [<
ffffffff812ec6dd>] udp4_lib_lookup2+0xad/0x370
[<
ffffffff812ecc22>] __udp4_lib_lookup+0x282/0x360
[<
ffffffff812ed63e>] __udp4_lib_rcv+0x31e/0x700
[<
ffffffff812bba45>] ? ip_local_deliver_finish+0x65/0x190
[<
ffffffff812bbbf8>] ? ip_local_deliver+0x88/0xa0
[<
ffffffff812eda35>] udp_rcv+0x15/0x20
[<
ffffffff812bba45>] ip_local_deliver_finish+0x65/0x190
[<
ffffffff812bbbf8>] ip_local_deliver+0x88/0xa0
[<
ffffffff812bb2cd>] ip_rcv_finish+0x32d/0x6f0
[<
ffffffff8128c14c>] ? netif_receive_skb+0x99c/0x11c0
[<
ffffffff812bb94b>] ip_rcv+0x2bb/0x350
[<
ffffffff8128c14c>] netif_receive_skb+0x99c/0x11c0
Signed-off-by: Leonard Crestez <lcrestez@ixiacom.com>
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
projects / mirror_ubuntu-kernels.git / commit