renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 12:43:55 +08:00
Code

staging: comedi: sanity check num_subdevices parameter in comedi_alloc_subdevices

Browse Source 
It's possible for a couple of the comedi drivers to incorrectly call
comedi_alloc_subdevices with num_subdevices = 0. Add a sanity check
before doing the kcalloc.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbot@mev.co.uk>
Cc: Frank Mori Hess <kmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2012-06-12 11:57:45 -07:00 committed by Greg Kroah-Hartman
parent 8b9ba6e5ef
commit 7f801c4171
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/staging/comedi/drivers.c
View File

@ -60,6 +60,8 @@ int comedi_alloc_subdevices(struct comedi_device *dev, int num_subdevices)
{
int i;
if (num_subdevices < 1)
return -EINVAL;
dev->n_subdevices = num_subdevices;
dev->subdevices =
kcalloc(num_subdevices, sizeof(struct comedi_subdevice),