This is a note to let you know that I've just added the patch titled um: virtio_uml: fix memory leak on init failures to the 5.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: um-virtio_uml-fix-memory-leak-on-init-failures.patch and it can be found in the queue-5.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 7ad28e0df7ee9dbcb793bb88dd81d4d22bb9a10e Mon Sep 17 00:00:00 2001 From: Johannes Berg <johannes.berg@xxxxxxxxx> Date: Fri, 25 Jun 2021 10:34:37 +0200 Subject: um: virtio_uml: fix memory leak on init failures From: Johannes Berg <johannes.berg@xxxxxxxxx> commit 7ad28e0df7ee9dbcb793bb88dd81d4d22bb9a10e upstream. If initialization fails, e.g. because the connection failed, we leak the 'vu_dev'. Fix that. Reported by smatch. Fixes: 5d38f324993f ("um: drivers: Add virtio vhost-user driver") Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> Acked-By: Anton Ivanov <anton.ivanov@xxxxxxxxxxxxxxxxxx> Signed-off-by: Richard Weinberger <richard@xxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/um/drivers/virtio_uml.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/arch/um/drivers/virtio_uml.c +++ b/arch/um/drivers/virtio_uml.c @@ -1139,7 +1139,7 @@ static int virtio_uml_probe(struct platf rc = os_connect_socket(pdata->socket_path); } while (rc == -EINTR); if (rc < 0) - return rc; + goto error_free; vu_dev->sock = rc; spin_lock_init(&vu_dev->sock_lock); @@ -1160,6 +1160,8 @@ static int virtio_uml_probe(struct platf error_init: os_close_file(vu_dev->sock); +error_free: + kfree(vu_dev); return rc; } Patches currently in stable-queue which might be from johannes.berg@xxxxxxxxx are queue-5.14/um-virtio_uml-fix-memory-leak-on-init-failures.patch queue-5.14/um-fix-stub-location-calculation.patch