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;a=summary
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@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Apr 9 17:09:24 CEST 2018
From: Suman Anna <s-anna@xxxxxx>
Date: Tue, 9 May 2017 18:58:24 -0500
Subject: uio: fix incorrect memory leak cleanup
From: Suman Anna <s-anna@xxxxxx>
[ 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@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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@xxxxxx 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