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| author | Octavian Purdila <opurdila@ixiacom.com> | 2010-12-16 23:26:56 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-16 23:26:56 +0100 |
| commit | fcbdf09d9652c8919dcf47072e3ae7dcb4eb98ac (patch) | |
| tree | 51e3cc1fbd813a880ea09dc31a12683b73d87e05 /include | |
| parent | be2net: use mutex instead of spin lock for mbox_lock (diff) | |
| download | linux-fcbdf09d9652c8919dcf47072e3ae7dcb4eb98ac.tar.xz linux-fcbdf09d9652c8919dcf47072e3ae7dcb4eb98ac.zip | |
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/sock.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 659d968d95c5..7d3f7ce239b5 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -754,6 +754,7 @@ struct proto { void (*unhash)(struct sock *sk); void (*rehash)(struct sock *sk); int (*get_port)(struct sock *sk, unsigned short snum); + void (*clear_sk)(struct sock *sk, int size); /* Keeping track of sockets in use */ #ifdef CONFIG_PROC_FS @@ -852,6 +853,8 @@ static inline void __sk_prot_rehash(struct sock *sk) sk->sk_prot->hash(sk); } +void sk_prot_clear_portaddr_nulls(struct sock *sk, int size); + /* About 10 seconds */ #define SOCK_DESTROY_TIME (10*HZ) |