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@ -1,80 +0,0 @@ |
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From 82014a5fa9930b0875e57869265acf011772277c Mon Sep 17 00:00:00 2001 |
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From: Stijn Tintel <stijn@linux-ipv6.be> |
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Date: Sun, 3 May 2020 20:56:58 +0300 |
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Subject: [PATCH] network: avoid segfault in freeaddrinfo |
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Calling freeaddrinfo(NULL) when using musl libc causes a segfault. |
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Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be> |
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---
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anet.c | 15 ++++++++++++--- |
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net_io.c | 5 ++++- |
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viewadsb.c | 5 ++++- |
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3 files changed, 20 insertions(+), 5 deletions(-) |
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--- a/anet.c
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+++ b/anet.c
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@@ -212,7 +212,10 @@ static int anetTcpGenericConnect(char *e
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if (ss) { |
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memcpy(ss, p->ai_addr, sizeof(*ss)); |
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} |
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- freeaddrinfo(gai_result);
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+ if (gai_result) {
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+ freeaddrinfo(gai_result);
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+ gai_result = NULL;
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+ }
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return s; |
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} |
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@@ -220,7 +223,10 @@ static int anetTcpGenericConnect(char *e
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anetCloseSocket(s); |
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} |
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- freeaddrinfo(gai_result);
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+ if (gai_result) {
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+ freeaddrinfo(gai_result);
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+ gai_result = NULL;
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+ }
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return ANET_ERR; |
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} |
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@@ -368,7 +374,10 @@ int anetTcpServer(char *err, char *servi
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fds[i++] = s; |
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} |
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- freeaddrinfo(gai_result);
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+ if (gai_result) {
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+ freeaddrinfo(gai_result);
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+ gai_result = NULL;
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+ }
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return (i > 0 ? i : ANET_ERR); |
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} |
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--- a/net_io.c
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+++ b/net_io.c
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@@ -3285,7 +3285,10 @@ void cleanupNetwork(void) {
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for (int i = 0; i < Modes.net_connectors_count; i++) { |
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struct net_connector *con = Modes.net_connectors[i]; |
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free(con->address); |
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- freeaddrinfo(con->addr_info);
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+ if (con->addr_info) {
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+ freeaddrinfo(con->addr_info);
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+ con->addr_info = NULL;
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+ }
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if (con->mutex) { |
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pthread_mutex_unlock(con->mutex); |
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pthread_mutex_destroy(con->mutex); |
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--- a/viewadsb.c
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+++ b/viewadsb.c
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@@ -308,7 +308,10 @@ int main(int argc, char **argv) {
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} |
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// Free local service and client |
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if (s) free(s); |
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- freeaddrinfo(con->addr_info);
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+ if (con->addr_info) {
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+ freeaddrinfo(con->addr_info);
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+ con->addr_info = NULL;
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+ }
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pthread_mutex_unlock(con->mutex); |
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pthread_mutex_destroy(con->mutex); |
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free(con->mutex); |