Now in sctp_remaddr_seq_show(), we use variable *tsp to get the param *v.
but *tsp is also used to traversal transport_addr_list, which will cover
the previous value, and make sctp_transport_put work on the wrong transport.
So fix it by adding a new variable to get the param *v.
Fixes: fba4c330c5b9 ("sctp: hold transport before we access t->asoc in sctp proc")
Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>
---
net/sctp/proc.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index ded7d93..963dffc 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -482,7 +482,7 @@ static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
{
struct sctp_association *assoc;
- struct sctp_transport *tsp;
+ struct sctp_transport *transport, *tsp;
if (v == SEQ_START_TOKEN) {
seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
@@ -490,10 +490,10 @@ static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
return 0;
}
- tsp = (struct sctp_transport *)v;
- if (!sctp_transport_hold(tsp))
+ transport = (struct sctp_transport *)v;
+ if (!sctp_transport_hold(transport))
return 0;
- assoc = tsp->asoc;
+ assoc = transport->asoc;
list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
transports) {
@@ -546,7 +546,7 @@ static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
seq_printf(seq, "\n");
}
- sctp_transport_put(tsp);
+ sctp_transport_put(transport);
return 0;
}
--
2.1.0
--
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