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| author | Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> | 2011-04-01 14:12:02 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-09 15:06:43 -0700 |
| commit | 658bdc683c81e8016a6be9e3d0c1e5aa139a9b5d (patch) | |
| tree | 3ff111601d8d4398d68ab11322883ebdfe02457f /lib | |
| parent | 4475d537057ad92380f3365ed10f876156a16766 (diff) | |
v4l: make sure drivers supply a zeroed struct v4l2_subdev
commit 80845a33165278f3236812009e9c568ba8c29938 upstream.
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
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions