Am 21.04.2013 13:10, schrieb Dan Carpenter:
> The last part of the "u_ent.name" buffer isn't cleared so it still has
> uninitialized stack memory.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
>
> diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
> index 99b80b6..1957c0d 100644
> --- a/drivers/media/media-device.c
> +++ b/drivers/media/media-device.c
> @@ -102,9 +102,12 @@ static long media_device_enum_entities(struct media_device *mdev,
> return -EINVAL;
>
> u_ent.id = ent->id;
> - u_ent.name[0] = '\0';
> - if (ent->name)
> - strlcpy(u_ent.name, ent->name, sizeof(u_ent.name));
> + if (ent->name) {
> + strncpy(u_ent.name, ent->name, sizeof(u_ent.name));
> + u_ent.name[sizeof(u_ent.name) - 1] = '\0';
> + } else {
> + memset(u_ent.name, 0, sizeof(u_ent.name));
> + }
I would always memset()
and then do strncpy() for sizeof(u_ent.name) - 1
the rest is always zero.
re,
wh
> u_ent.type = ent->type;
> u_ent.revision = ent->revision;
> u_ent.flags = ent->flags;
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