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| author | Octavian Purdila <opurdila@ixiacom.com> | 2010-12-16 14:26:56 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-16 14:26:56 -0800 |
| commit | fcbdf09d9652c8919dcf47072e3ae7dcb4eb98ac (patch) | |
| tree | 51e3cc1fbd813a880ea09dc31a12683b73d87e05 /net/ipv6 | |
| parent | 2984961c388381c1830f95e1c2dc2137301b1009 (diff) | |
| download | linux-fcbdf09d9652c8919dcf47072e3ae7dcb4eb98ac.tar.bz2 | |
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 'net/ipv6')
| -rw-r--r-- | net/ipv6/udp.c | 1 | ||||
| -rw-r--r-- | net/ipv6/udplite.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 91def93bec85..cd6cb7c3e563 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -1477,6 +1477,7 @@ struct proto udpv6_prot = { .compat_setsockopt = compat_udpv6_setsockopt, .compat_getsockopt = compat_udpv6_getsockopt, #endif + .clear_sk = sk_prot_clear_portaddr_nulls, }; static struct inet_protosw udpv6_protosw = { diff --git a/net/ipv6/udplite.c b/net/ipv6/udplite.c index 5f48fadc27f7..986c4de5292e 100644 --- a/net/ipv6/udplite.c +++ b/net/ipv6/udplite.c @@ -55,6 +55,7 @@ struct proto udplitev6_prot = { .compat_setsockopt = compat_udpv6_setsockopt, .compat_getsockopt = compat_udpv6_getsockopt, #endif + .clear_sk = sk_prot_clear_portaddr_nulls, }; static struct inet_protosw udplite6_protosw = { |