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gossipd: when reconnecting, make sure we free old connection.

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Looks like old connection got a callback, and we blew up since
the old peer was freed:

2018-05-06T10:57:11.865Z lightning_gossipd(14387): ...will try again in 300 seconds
2018-05-06T10:57:16.397Z lightning_gossipd(14387): peer_out WIRE_INIT
2018-05-06T10:57:16.405Z lightning_gossipd(14387): peer_in WIRE_INIT
2018-05-06T10:57:16.406Z lightning_gossipd(14387): peer 03b30e131241fe28fc923d74a060a8c7abfcc91323c485f8a9cf964575cb4fd3f4: reconnect for local peer
2018-05-06T10:57:16.406Z lightning_gossipd(14387): peer 03b30e131241fe28fc923d74a060a8c7abfcc91323c485f8a9cf964575cb4fd3f4 now remote
2018-05-06T10:57:16.406Z lightning_gossipd(14387): UPDATE WIRE_GOSSIP_PEER_CONNECTED
2018-05-06T10:57:16.406Z lightning_gossipd(14387): UPDATE WIRE_GOSSIP_PEER_CONNECTED
2018-05-06T10:57:16.406Z lightning_gossipd(14387): Handing back peer 03b30e131241fe28fc923d74a060a8c7abfcc91323c485f8a9cf964575cb4fd3f4 to master
2018-05-06T10:57:16.420Z lightning_gossipd(14387): hand_back_peer 03b30e131241fe28fc923d74a060a8c7abfcc91323c485f8a9cf964575cb4fd3f4: now local again
2018-05-06T10:57:16.420Z lightning_gossipd(14387): FATAL SIGNAL 11
2018-05-06T10:57:16.420Z lightning_gossipd(14387): backtrace: common/daemon.c:42 (crashdump) 0x416991
2018-05-06T10:57:16.420Z lightning_gossipd(14387): backtrace: (null):0 ((null)) 0x7f70cf57a4af
2018-05-06T10:57:16.420Z lightning_gossipd(14387): backtrace: common/msg_queue.c:38 (msg_dequeue) 0x418232
2018-05-06T10:57:16.421Z lightning_gossipd(14387): backtrace: gossipd/gossip.c:816 (peer_pkt_out) 0x404ac4
2018-05-06T10:57:16.421Z lightning_gossipd(14387): backtrace: ccan/ccan/io/io.c:59 (next_plan) 0x4316db
2018-05-06T10:57:16.421Z lightning_gossipd(14387): backtrace: ccan/ccan/io/io.c:427 (io_do_always) 0x4322ce
2018-05-06T10:57:16.421Z lightning_gossipd(14387): backtrace: ccan/ccan/io/poll.c:228 (handle_always) 0x433abd
2018-05-06T10:57:16.421Z lightning_gossipd(14387): backtrace: ccan/ccan/io/poll.c:249 (io_loop) 0x433b48
2018-05-06T10:57:16.421Z lightning_gossipd(14387): backtrace: gossipd/gossip.c:2407 (main) 0x4093aa
2018-05-06T10:57:16.421Z lightning_gossipd(14387): backtrace: (null):0 ((null)) 0x7f70cf56582f
2018-05-06T10:57:16.421Z lightning_gossipd(14387): backtrace: (null):0 ((null)) 0x402ad8
2018-05-06T10:57:16.421Z lightning_gossipd(14387): backtrace: (null):0 ((null)) 0xffffffffffffffff
2018-05-06T10:57:16.421Z lightning_gossipd(14387): STATUS_FAIL_INTERNAL_ERROR: FATAL SIGNAL

Fixes: #1469
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2018-05-09 14:35:17 +09:30 committed by Christian Decker
parent 2bc9d7594c
commit d1b28f832d
1 changed files with 3 additions and 2 deletions
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5
gossipd/gossip.c
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@ -473,8 +473,9 @@ static struct io_plan *peer_connected(struct io_conn *conn, struct peer *peer)
add_reconnecting_peer(peer->daemon, peer);
return io_wait(conn, peer, retry_peer_connected, peer);
}
/* Local peers can just be discarded when they reconnect */
tal_free(old_peer);
/* Local peers can just be discarded when they reconnect:
* closing conn will free peer. */
io_close(old_peer->local->conn);
}
reached_peer(peer, conn);