From: Jesper Dangaard Brouer
Date: Mon, 23 Oct 2017 19:39:28 +0200
> As pointed out by Michael, commit 1c601d829ab0 ("bpf: cpumap xdp_buff
> to skb conversion and allocation") contains a classical example of the
> potential lost wake-up problem.
>
> We need to recheck the condition __ptr_ring_em
On Mon, 23 Oct 2017 22:34:37 +0200
Daniel Borkmann wrote:
> On 10/23/2017 07:39 PM, Jesper Dangaard Brouer wrote:
> > As pointed out by Michael, commit 1c601d829ab0 ("bpf: cpumap xdp_buff
> > to skb conversion and allocation") contains a classical example of the
> > potential lost wake-up problem
On 10/23/2017 07:39 PM, Jesper Dangaard Brouer wrote:
As pointed out by Michael, commit 1c601d829ab0 ("bpf: cpumap xdp_buff
to skb conversion and allocation") contains a classical example of the
potential lost wake-up problem.
We need to recheck the condition __ptr_ring_empty() after changing
cu
As pointed out by Michael, commit 1c601d829ab0 ("bpf: cpumap xdp_buff
to skb conversion and allocation") contains a classical example of the
potential lost wake-up problem.
We need to recheck the condition __ptr_ring_empty() after changing
current->state to TASK_INTERRUPTIBLE, this avoids a race b
