This is a note to let you know that I've just added the patch titled

uio: fix incorrect memory leak cleanup

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: uio-fix-incorrect-memory-leak-cleanup.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Mon Apr 9 17:09:24 CEST 2018

From: Suman Anna s-anna@ti.com Date: Tue, 9 May 2017 18:58:24 -0500 Subject: uio: fix incorrect memory leak cleanup

From: Suman Anna s-anna@ti.com

[ Upstream commit 0d83539092ddb1ab79b4d65bccb866bf07ea2ccd ]

Commit 75f0aef6220d ("uio: fix memory leak") has fixed up some memory leaks during the failure paths of the addition of uio attributes, but still is not correct entirely. A kobject_uevent() failure still needs a kobject_put() and the kobject container structure allocation failure before the kobject_init() doesn't need a kobject_put(). Fix this properly.

Fixes: 75f0aef6220d ("uio: fix memory leak") Signed-off-by: Suman Anna s-anna@ti.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/uio/uio.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -279,7 +279,7 @@ static int uio_dev_add_attributes(struct map = kzalloc(sizeof(*map), GFP_KERNEL); if (!map) { ret = -ENOMEM; - goto err_map_kobj; + goto err_map; } kobject_init(&map->kobj, &map_attr_type); map->mem = mem; @@ -289,7 +289,7 @@ static int uio_dev_add_attributes(struct goto err_map_kobj; ret = kobject_uevent(&map->kobj, KOBJ_ADD); if (ret) - goto err_map; + goto err_map_kobj; }

for (pi = 0; pi < MAX_UIO_PORT_REGIONS; pi++) { @@ -308,7 +308,7 @@ static int uio_dev_add_attributes(struct portio = kzalloc(sizeof(*portio), GFP_KERNEL); if (!portio) { ret = -ENOMEM; - goto err_portio_kobj; + goto err_portio; } kobject_init(&portio->kobj, &portio_attr_type); portio->port = port; @@ -319,7 +319,7 @@ static int uio_dev_add_attributes(struct goto err_portio_kobj; ret = kobject_uevent(&portio->kobj, KOBJ_ADD); if (ret) - goto err_portio; + goto err_portio_kobj; }

return 0;

Patches currently in stable-queue which might be from s-anna@ti.com are

queue-4.9/arm-davinci-da8xx-create-dsp-device-only-when-assigned-memory.patch queue-4.9/uio-fix-incorrect-memory-leak-cleanup.patch