From 24e73ab542c7f71d2b5447941759b0a40d9bf305 Mon Sep 17 00:00:00 2001 From: Yang Yingliang Date: Sat, 12 Nov 2022 17:25:41 +0800 Subject: [PATCH] pcmcia: cs: fix possible hung task and memory leak pccardd() [ Upstream commit e3ea1b4847e49234e691c0d66bf030bd65bb7f2b ] If device_register() returns error in pccardd(), it leads two issues: 1. The socket_released has never been completed, it will block pcmcia_unregister_socket(), because of waiting for completion of socket_released. 2. The device name allocated by dev_set_name() is leaked. Fix this two issues by calling put_device() when device_register() fails. socket_released can be completed in pcmcia_release_socket(), the name can be freed in kobject_cleanup(). Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Yang Yingliang Signed-off-by: Dominik Brodowski Signed-off-by: Sasha Levin --- drivers/pcmcia/cs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index f70197154a36..820cce7c8b40 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -605,6 +605,7 @@ static int pccardd(void *__skt) dev_warn(&skt->dev, "PCMCIA: unable to register socket\n"); skt->thread = NULL; complete(&skt->thread_done); + put_device(&skt->dev); return 0; } ret = pccard_sysfs_add_socket(&skt->dev);