[U-Boot] [RESEND PATCH] net: tftp: Fix tftp store address check in store_block()

[Bin Meng]

Hi Joe,

On Wed, Nov 20, 2019 at 5:54 AM Joe Hershberger <joe.hershberger at ni.com> wrote:
>
> On Sat, Nov 16, 2019 at 12:20 AM Bin Meng <bmeng.cn at gmail.com> wrote:
> >
> > During testing of qemu-riscv32 with a 2GiB memory configuration,
> > tftp always fails with a error message:
> >
> >   Load address: 0x84000000
> >   Loading: #
> >   TFTP error: trying to overwrite reserved memory...
> >
> > It turns out the result of 'tftp_load_addr + tftp_load_size' just
> > overflows (0x100000000) and the test logic in store_block() fails.
> > Fix this by adjusting the end address to ULONG_MAX when overflow
> > is detected.
> >
> > Fixes: a156c47e39ad ("tftp: prevent overwriting reserved memory")
> > Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
>
> Odd corner case, but sure...
>
> Acked-by: Joe Hershberger <joe.hershberger at ni.com>

Could you pull this for v2020.01? thanks!

Regards,
Bin