On Mon, Aug 1, 2022 at 9:15 PM Mao,Yingming <maoyingming@baidu.com> wrote:
>
> Thans for your review.
>                                 Mao Yingming
>
> -----邮件原件-----
> 发件人: Somnath Kotur <somnath.kotur@broadcom.com>
> 发送时间: 2022年8月2日 12:09
> 收件人: Mao,Yingming <maoyingming@baidu.com>
> 抄送: dev@dpdk.org; Ajit Khaparde <ajit.khaparde@broadcom.com>; Kalesh AP <kalesh-anakkur.purayil@broadcom.com>; Thomas Monjalon <thomas@monjalon.net>
> 主题: Re: [PATCH v3] net/bnxt: fix null pointer dereference in bnxt_hwrm_port_led_cfg()
>
> On Tue, Aug 2, 2022 at 9:38 AM Mao YingMing <maoyingming@baidu.com> wrote:
> >
> > For VFs, bp->leds is uninitialized, check bp->leds is
> > not null before checking for bp->leds->num_leds.
> >
> > segfault backtrace in trex program when use VF:
> > 11: bnxt_hwrm_port_led_cfg (bp=0x23ffb2140, led_on=true)
> > 10: bnxt_dev_led_on_op (dev=0x22d7780 <rte_eth_devices>)
> >  9: rte_eth_led_on (port_id=0)
> >  8: DpdkTRexPortAttr::set_led (this=0x23b6ce0, on=true)
> >  7: DpdkTRexPortAttr::DpdkTRexPortAttr
> >  6: CTRexExtendedDriverBnxt::create_port_attr
> >  5: CPhyEthIF::Create
> >  4: CGlobalTRex::device_start
> >  3: CGlobalTRex::Create
> >  2: main_test
> >  1: main
> >
> > Fixes: d4d5a04 ("net/bnxt: fix unnecessary memory allocation")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Mao YingMing <maoyingming@baidu.com>
> > ---
> >  drivers/net/bnxt/bnxt_hwrm.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
> > index 9c52573..51e1e2d 100644
> > --- a/drivers/net/bnxt/bnxt_hwrm.c
> > +++ b/drivers/net/bnxt/bnxt_hwrm.c
> > @@ -4535,7 +4535,7 @@ int bnxt_hwrm_port_led_cfg(struct bnxt *bp, bool led_on)
> >         uint16_t duration = 0;
> >         int rc, i;
> >
> > -       if (!bp->leds->num_leds || BNXT_VF(bp))
> > +       if (BNXT_VF(bp) || !bp->leds || !bp->leds->num_leds)
> >                 return -EOPNOTSUPP;
> >
> >         HWRM_PREP(&req, HWRM_PORT_LED_CFG, BNXT_USE_CHIMP_MB);
> > --
> > 1.8.3.1
> >
> Acked-by: Somnath Kotur <somnath.kotur@broadcom.com>
Patch merged in dpdk-next-net-brcm
Modified the commit headline to
net/bnxt: fix null pointer dereference.

Thanks