Christoph Hellwig
2020-Jul-20 12:47 UTC
[Bridge] [PATCH 02/24] bpfilter: fix up a sparse annotation
The __user doesn't make sense when casting to an integer type. Signed-off-by: Christoph Hellwig <hch at lst.de> --- net/bpfilter/bpfilter_kern.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/bpfilter/bpfilter_kern.c b/net/bpfilter/bpfilter_kern.c index 977e9dad72ca4f..713b4b3d02005d 100644 --- a/net/bpfilter/bpfilter_kern.c +++ b/net/bpfilter/bpfilter_kern.c @@ -49,7 +49,7 @@ static int __bpfilter_process_sockopt(struct sock *sk, int optname, req.is_set = is_set; req.pid = current->pid; req.cmd = optname; - req.addr = (long __force __user)optval; + req.addr = (__force long)optval; req.len = optlen; if (!bpfilter_ops.info.tgid) goto out; -- 2.27.0
Luc Van Oostenryck
2020-Jul-21 02:40 UTC
[Bridge] [PATCH 02/24] bpfilter: fix up a sparse annotation
On Mon, Jul 20, 2020 at 02:47:15PM +0200, Christoph Hellwig wrote:> The __user doesn't make sense when casting to an integer type. > > Signed-off-by: Christoph Hellwig <hch at lst.de> > --- > net/bpfilter/bpfilter_kern.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/net/bpfilter/bpfilter_kern.c b/net/bpfilter/bpfilter_kern.c > index 977e9dad72ca4f..713b4b3d02005d 100644 > --- a/net/bpfilter/bpfilter_kern.c > +++ b/net/bpfilter/bpfilter_kern.c > @@ -49,7 +49,7 @@ static int __bpfilter_process_sockopt(struct sock *sk, int optname, > req.is_set = is_set; > req.pid = current->pid; > req.cmd = optname; > - req.addr = (long __force __user)optval; > + req.addr = (__force long)optval;For casts to integers, even '__force' is not needed (since integers can't be dereferenced, the concept of address-space is meaningless for them, so it's never useful to warn when it's dropped and '__force' is thus not needed). -- Luc