Re: [Qemu-devel] [PATCH for v2.6.0] net: imx: check buffer descriptor length

[P J P]

+-- On Wed, 21 Sep 2016, Paolo Bonzini wrote --+
| > diff --git a/hw/net/imx_fec.c b/hw/net/imx_fec.c
| > index e60e338..31870b0 100644
| > --- a/hw/net/imx_fec.c
| > +++ b/hw/net/imx_fec.c
| > @@ -276,7 +276,7 @@ static void imx_fec_do_tx(IMXFECState *s)
| >          imx_fec_read_bd(&bd, addr);
| >          FEC_PRINTF("tx_bd %x flags %04x len %d data %08x\n",
| >                     addr, bd.flags, bd.length, bd.data);
| > -        if ((bd.flags & FEC_BD_R) == 0) {
| > +        if (!bd.length || (bd.flags & FEC_BD_R) == 0) {
| >              /* Run out of descriptors to transmit.  */
| >              break;
| >          }
| > 
| 
| Same here---and same bug as the previous patch too:

Yep, same issue as the other patch.
--
Prasad J Pandit / Red Hat Product Security Team
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