From fdceb4ab4d7ba920bb094ab477df4221261b291e Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Wed, 22 Apr 2020 15:07:15 +0200 Subject: [PATCH] io: Fix qio_channel_socket_close() error handling MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The Error ** argument must be NULL, &error_abort, &error_fatal, or a pointer to a variable containing NULL. Passing an argument of the latter kind twice without clearing it in between is wrong: if the first call sets an error, it no longer points to NULL for the second call. qio_channel_socket_close() passes @errp first to socket_listen_cleanup(), and then, if closesocket() fails, to error_setg_errno(). If socket_listen_cleanup() failed, this will trip the assertion in error_setv(). Fix by ignoring a second error. Fixes: 73564c407caedf992a1c688b5fea776a8b56ba2a Cc: Daniel P. Berrangé Signed-off-by: Markus Armbruster Reviewed-by: Daniel P. Berrangé Message-Id: <20200422130719.28225-11-armbru@redhat.com> --- io/channel-socket.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/io/channel-socket.c b/io/channel-socket.c index b74f5b92a0..e1b4667087 100644 --- a/io/channel-socket.c +++ b/io/channel-socket.c @@ -704,6 +704,7 @@ qio_channel_socket_close(QIOChannel *ioc, { QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); int rc = 0; + Error *err = NULL; if (sioc->fd != -1) { #ifdef WIN32 @@ -715,8 +716,8 @@ qio_channel_socket_close(QIOChannel *ioc, if (closesocket(sioc->fd) < 0) { sioc->fd = -1; - error_setg_errno(errp, errno, - "Unable to close socket"); + error_setg_errno(&err, errno, "Unable to close socket"); + error_propagate(errp, err); return -1; } sioc->fd = -1;