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connectd: fix crash when we get an incoming conn while outgoing attempt is ratelimited.

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```
Program received signal SIGSEGV, Segmentation fault.
0x000000001014e9d8 in io_set_finish_ (conn=0x0, finish=0x0, arg=0x0) at ccan/ccan/io/io.c:137
137             conn->finish = finish;
(gdb) bt
    incoming=true) at connectd/connectd.c:394
```

Fixes: #7871
Reported-by: grubles
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-None: broken in this release
This commit is contained in:
Rusty Russell 2024-11-28 14:57:45 +10:30
parent 36ad654fc1
commit 2e90f59dfe
1 changed files with 4 additions and 2 deletions
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6
connectd/connectd.c
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@ -390,8 +390,10 @@ struct io_plan *peer_connected(struct io_conn *conn,
if (connect) {
/*~ Now we've connected, disable the callback which would
* cause us to to try the next address on failure. */
io_set_finish(connect->conn, NULL, NULL);
* cause us to to try the next address on failure (if it's
* in progress right now) */
if (connect->conn)
io_set_finish(connect->conn, NULL, NULL);
tal_free(connect);
}