On Mon, Dec 10, 2018 at 09:45:30AM +, Jiong Wang wrote:
> > > return -EACCES;
> > > + } else if (src_reg->type == SCALAR_VALUE) {
> > > + *dst_reg = *src_reg;
> > > +
On 09/12/2018 22:17, Alexei Starovoitov wrote:
On Fri, Dec 07, 2018 at 12:16:18PM -0500, Jiong Wang wrote:
Currently, the destination register is marked as unknown for 32-bit
sub-register move (BPF_MOV | BPF_ALU) whenever the source register type is
SCALAR_VALUE.
This is too conservative that s
On Fri, Dec 07, 2018 at 12:16:18PM -0500, Jiong Wang wrote:
> Currently, the destination register is marked as unknown for 32-bit
> sub-register move (BPF_MOV | BPF_ALU) whenever the source register type is
> SCALAR_VALUE.
>
> This is too conservative that some valid cases will be rejected.
> Espe
Currently, the destination register is marked as unknown for 32-bit
sub-register move (BPF_MOV | BPF_ALU) whenever the source register type is
SCALAR_VALUE.
This is too conservative that some valid cases will be rejected.
Especially, this may turn a constant scalar value into unknown value that
co
