> > > Unfortunately this doesn't work. Code in r8152.c doesn't use
> > > local_bh_enable()/local_bh_disable(). I tried to lock it with
> > > spin_lock_bh()/spin_unlock_bh() and with mutex_lock()/mutex_unlock()
> > > but neither work.
> > The local_bh_disable() / local_bh_enable() definitely is
On Mon, 2017-03-13 at 08:44 -0700, Eric Dumazet wrote:
> On Mon, 2017-03-13 at 16:37 +0100, Petr Vorel wrote:
> > Hi Eric,
> >
> > > > The proper work around is to enclose the napi_schedule() in a
> > > > local_bh_enable()/local_bh_disable() pair.
> >
> > > Something like :
> > > ---
On Mon, 2017-03-13 at 16:37 +0100, Petr Vorel wrote:
> Hi Eric,
>
> > > The proper work around is to enclose the napi_schedule() in a
> > > local_bh_enable()/local_bh_disable() pair.
>
> > Something like :
> > --- a/drivers/net/usb/r8152.c
> > +++ b/drivers/net/usb/r8152.c
> > @@ -3703,8
Hi Eric,
> > The proper work around is to enclose the napi_schedule() in a
> > local_bh_enable()/local_bh_disable() pair.
> Something like :
> --- a/drivers/net/usb/r8152.c
> +++ b/drivers/net/usb/r8152.c
> @@ -3703,8 +3703,10 @@ static int rtl8152_resume(struct usb_interface *intf)
>
On Mon, 2017-03-13 at 06:18 -0700, Eric Dumazet wrote:
> On Mon, 2017-03-13 at 13:47 +0100, Petr Vorel wrote:
> > commit 7489bdadb7d1 (r8152: check rx after napi is enabled) causes null
> > pointer dereference when using device as under root:
> >
> > # rmmod r8152 # or lsusb -v
> > NOHZ:
On Mon, 2017-03-13 at 13:47 +0100, Petr Vorel wrote:
> commit 7489bdadb7d1 (r8152: check rx after napi is enabled) causes null
> pointer dereference when using device as under root:
>
> # rmmod r8152 # or lsusb -v
> NOHZ: local_softirq_pending 08
> BUG: unable to handle kernel NULL pointer
commit 7489bdadb7d1 (r8152: check rx after napi is enabled) causes null
pointer dereference when using device as under root:
# rmmod r8152 # or lsusb -v
NOHZ: local_softirq_pending 08
BUG: unable to handle kernel NULL pointer dereference at 0008
IP: r8152_poll+0x125/0x570 [r8152]
PGD
