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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2019-03-25 05:06:26 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-03-29 07:40:45 -0400 |
| commit | d7a955c8ef7cd8fecfd9e900c47f72e67dfcc49a (patch) | |
| tree | 51bcaba2f9b4419dc395ff0ccf74791f95ca17cc /drivers/media/v4l2-core | |
| parent | 0e633f97162c1c74c68e2eb20bbd9259dce87cd9 (diff) | |
| download | linux-d7a955c8ef7cd8fecfd9e900c47f72e67dfcc49a.tar.bz2 | |
media: v4l2-ctrl: potential shift wrapping bugs
This code generates a static checker warning:
drivers/media/v4l2-core/v4l2-ctrls.c:2921 v4l2_querymenu()
warn: should '(1 << i)' be a 64 bit type?
The problem is that "ctrl->menu_skip_mask" is a u64 and we're only
testing the lower 32 bits.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/v4l2-core')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ctrls.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index aed1c3a06500..b1ae2e555c68 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -1605,7 +1605,7 @@ static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx, case V4L2_CTRL_TYPE_INTEGER_MENU: if (ptr.p_s32[idx] < ctrl->minimum || ptr.p_s32[idx] > ctrl->maximum) return -ERANGE; - if (ctrl->menu_skip_mask & (1 << ptr.p_s32[idx])) + if (ctrl->menu_skip_mask & (1ULL << ptr.p_s32[idx])) return -EINVAL; if (ctrl->type == V4L2_CTRL_TYPE_MENU && ctrl->qmenu[ptr.p_s32[idx]][0] == '\0') @@ -2930,7 +2930,7 @@ int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm) return -EINVAL; /* Use mask to see if this menu item should be skipped */ - if (ctrl->menu_skip_mask & (1 << i)) + if (ctrl->menu_skip_mask & (1ULL << i)) return -EINVAL; /* Empty menu items should also be skipped */ if (ctrl->type == V4L2_CTRL_TYPE_MENU) { |