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sctp: fix the panic caused by route update
[cascardo/linux.git]
/
net
/
sctp
/
output.c
diff --git
a/net/sctp/output.c
b/net/sctp/output.c
index
2a5c189
..
6cb0df8
100644
(file)
--- a/
net/sctp/output.c
+++ b/
net/sctp/output.c
@@
-418,6
+418,7
@@
int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp)
__u8 has_data = 0;
int gso = 0;
int pktcount = 0;
__u8 has_data = 0;
int gso = 0;
int pktcount = 0;
+ int auth_len = 0;
struct dst_entry *dst;
unsigned char *auth = NULL; /* pointer to auth in skb data */
struct dst_entry *dst;
unsigned char *auth = NULL; /* pointer to auth in skb data */
@@
-510,7
+511,12
@@
int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp)
list_for_each_entry(chunk, &packet->chunk_list, list) {
int padded = SCTP_PAD4(chunk->skb->len);
list_for_each_entry(chunk, &packet->chunk_list, list) {
int padded = SCTP_PAD4(chunk->skb->len);
- if (pkt_size + padded > tp->pathmtu)
+ if (chunk == packet->auth)
+ auth_len = padded;
+ else if (auth_len + padded + packet->overhead >
+ tp->pathmtu)
+ goto nomem;
+ else if (pkt_size + padded > tp->pathmtu)
break;
pkt_size += padded;
}
break;
pkt_size += padded;
}