4.14-stable review patch. If anyone has any objections, please let me know.
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From: Yang Yingliang yangyingliang@huawei.com
[ 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 yangyingliang@huawei.com Signed-off-by: Dominik Brodowski linux@dominikbrodowski.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pcmcia/cs.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index 182e5ef4ab83d..e99ef7b745aeb 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -608,6 +608,7 @@ 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);