From 7d9f90ebe9dd3a7f6af1fbb97d8cc228fb0fded4 Mon Sep 17 00:00:00 2001 From: David Bauer Date: Thu, 25 Jul 2019 18:51:25 +0200 Subject: resolve: fix segmentation fault with musl >1.1.20 When compiled with musl >1.1.20, fastd will crash in case it can't resolve a peers hostname. This is due to a changed implementation of freeaddrinfo in musl 1.1.21 onwards. This segfault is fixed by not calling freeaddrinfo in case the supplied pointer is null. Signed-off-by: David Bauer --- src/resolve.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'src') diff --git a/src/resolve.c b/src/resolve.c index 9bdfa1c..bfd2a59 100644 --- a/src/resolve.c +++ b/src/resolve.c @@ -104,7 +104,9 @@ static void * resolve_peer(void *varg) { fastd_async_enqueue(ASYNC_TYPE_RESOLVE_RETURN, ret, sizeof(fastd_async_resolve_return_t) + n_addr*sizeof(fastd_peer_address_t)); - freeaddrinfo(res); + if (res) + freeaddrinfo(res); + free(arg->hostname); free(arg); -- cgit v1.2.3