[SCTP]: Fix NULL dereference of asoc.

Commit 7cbca67c073263c179f605bdbbdc565ab29d801d ("[IPV6]: Support
Source Address Selection API (RFC5014)") introduced NULL dereference
of asoc to sctp_v6_get_saddr in net/sctp/ipv6.c.
Pointed out by Johann Felix Soden <johfel@users.sourceforge.net>.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 0ce0443c5b79..917d425f0542 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -548,7 +548,8 @@ struct sctp_af {
         struct dst_entry *(*get_dst)    (struct sctp_association *asoc,
                                          union sctp_addr *daddr,
                                          union sctp_addr *saddr);
-        void            (*get_saddr)    (struct sctp_association *asoc,
+        void            (*get_saddr)    (struct sctp_sock *sk,
+                                         struct sctp_association *asoc,
                                          struct dst_entry *dst,
                                          union sctp_addr *daddr,
                                          union sctp_addr *saddr);