From: Xin Long <[email protected]>

[ Upstream commit f794dc2304d83ab998c2eee5bab0549aff5c53a2 ]

This issue causes SCTP_PEER_ADDR_THLDS sockopt not to be able to dump
a transport thresholds info.

Fix it by adding 'goto' put_user in sctp_getsockopt_paddr_thresholds.

Fixes: 8add543e369d ("sctp: add SCTP_FUTURE_ASSOC for SCTP_PEER_ADDR_THLDS 
sockopt")
Signed-off-by: Xin Long <[email protected]>
Acked-by: Marcelo Ricardo Leitner <[email protected]>
Acked-by: Neil Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 net/sctp/socket.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -7176,7 +7176,7 @@ static int sctp_getsockopt_paddr_thresho
                val.spt_pathmaxrxt = trans->pathmaxrxt;
                val.spt_pathpfthld = trans->pf_retrans;
 
-               return 0;
+               goto out;
        }
 
        asoc = sctp_id2assoc(sk, val.spt_assoc_id);
@@ -7194,6 +7194,7 @@ static int sctp_getsockopt_paddr_thresho
                val.spt_pathmaxrxt = sp->pathmaxrxt;
        }
 
+out:
        if (put_user(len, optlen) || copy_to_user(optval, &val, len))
                return -EFAULT;
 


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