From 287d819f015a624f321d34491e30b62a05912298 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Thu, 15 Aug 2019 13:23:10 +0100 Subject: [PATCH 08/10] iothread: fix crash with invalid properties MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RH-Author: Stefan Hajnoczi Message-id: <20190815132311.22027-2-stefanha@redhat.com> Patchwork-id: 89995 O-Subject: [RHEL-8.1.0 qemu-kvm PATCH v2 1/2] iothread: fix crash with invalid properties Bugzilla: 1687541 RH-Acked-by: Peter Xu RH-Acked-by: Philippe Mathieu-Daudé RH-Acked-by: John Snow RH-Acked-by: Markus Armbruster From: Marc-André Lureau -object iothread,id=foo,? will crash qemu: qemu-system-x86_64:qemu-thread-posix.c:128: qemu_cond_destroy: Assertion `cond->initialized' failed. Use thread_id != -1 to check if iothread_complete() finished successfully and the mutex/cond have been initialized. Signed-off-by: Marc-André Lureau Message-Id: <20180821100716.13803-1-marcandre.lureau@redhat.com> Signed-off-by: Fam Zheng (cherry picked from commit 14a2d11825ddc37d6547a80704ae6450e9e376c7) Signed-off-by: Stefan Hajnoczi Signed-off-by: Danilo C. L. de Paula --- iothread.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/iothread.c b/iothread.c index aff1281..2fb1cdf 100644 --- a/iothread.c +++ b/iothread.c @@ -110,6 +110,7 @@ static void iothread_instance_init(Object *obj) IOThread *iothread = IOTHREAD(obj); iothread->poll_max_ns = IOTHREAD_POLL_MAX_NS_DEFAULT; + iothread->thread_id = -1; } static void iothread_instance_finalize(Object *obj) @@ -117,6 +118,11 @@ static void iothread_instance_finalize(Object *obj) IOThread *iothread = IOTHREAD(obj); iothread_stop(iothread); + + if (iothread->thread_id != -1) { + qemu_cond_destroy(&iothread->init_done_cond); + qemu_mutex_destroy(&iothread->init_done_lock); + } /* * Before glib2 2.33.10, there is a glib2 bug that GSource context * pointer may not be cleared even if the context has already been @@ -135,8 +141,6 @@ static void iothread_instance_finalize(Object *obj) g_main_context_unref(iothread->worker_context); iothread->worker_context = NULL; } - qemu_cond_destroy(&iothread->init_done_cond); - qemu_mutex_destroy(&iothread->init_done_lock); } static void iothread_complete(UserCreatable *obj, Error **errp) @@ -147,7 +151,6 @@ static void iothread_complete(UserCreatable *obj, Error **errp) iothread->stopping = false; iothread->running = true; - iothread->thread_id = -1; iothread->ctx = aio_context_new(&local_error); if (!iothread->ctx) { error_propagate(errp, local_error); -- 1.8.3.1