diff options
| author | Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> | 2011-04-01 14:12:02 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-04-29 12:33:28 -0300 |
| commit | 80845a33165278f3236812009e9c568ba8c29938 (patch) | |
| tree | fdf785e3a5ca7cd6cf26a4e1d19b3928b96bbcae /drivers/media/video/tea6420.c | |
| parent | 2b5cb549f8a31b44575fe25ccd043ddb7e901cf8 (diff) | |
[media] v4l: make sure drivers supply a zeroed struct v4l2_subdev
Some v4l drivers currently don't initialize their struct v4l2_subdev
with zeros, and this is a problem since some of the v4l2 code expects
this. One example is the addition of internal_ops in commit 45f6f84,
after that we are at risk of random oopses with these drivers when code
in v4l2_device_register_subdev tries to dereference sd->internal_ops->*,
as can be shown by the report at http://bugs.launchpad.net/bugs/745213
and analysis of its crash at https://lkml.org/lkml/2011/4/1/168
Use kzalloc within problematic drivers to ensure we have a zeroed struct
v4l2_subdev.
BugLink: http://bugs.launchpad.net/bugs/745213
Cc: <stable@kernel.org>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/tea6420.c')
| -rw-r--r-- | drivers/media/video/tea6420.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/video/tea6420.c b/drivers/media/video/tea6420.c index 5ea840401f21..f350b6c24500 100644 --- a/drivers/media/video/tea6420.c +++ b/drivers/media/video/tea6420.c @@ -125,7 +125,7 @@ static int tea6420_probe(struct i2c_client *client, v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name); - sd = kmalloc(sizeof(struct v4l2_subdev), GFP_KERNEL); + sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL); if (sd == NULL) return -ENOMEM; v4l2_i2c_subdev_init(sd, client, &tea6420_ops); |