On 1/7/21 3:44 PM, Willem de Bruijn wrote:
On Thu, Jan 7, 2021 at 8:33 AM Daniel Borkmann wrote:
On 1/7/21 2:05 PM, Willem de Bruijn wrote:
On Thu, Jan 7, 2021 at 7:52 AM Daniel Borkmann wrote:
On 1/7/21 12:40 PM, Dongseok Yi wrote:
On 2021-01-07 20:05, Daniel Borkmann wrote:
On 1/7/21 1:3
On Thu, Jan 7, 2021 at 8:33 AM Daniel Borkmann wrote:
>
> On 1/7/21 2:05 PM, Willem de Bruijn wrote:
> > On Thu, Jan 7, 2021 at 7:52 AM Daniel Borkmann wrote:
> >> On 1/7/21 12:40 PM, Dongseok Yi wrote:
> >>> On 2021-01-07 20:05, Daniel Borkmann wrote:
> On 1/7/21 1:39 AM, Dongseok Yi wrote:
On 1/7/21 2:05 PM, Willem de Bruijn wrote:
On Thu, Jan 7, 2021 at 7:52 AM Daniel Borkmann wrote:
On 1/7/21 12:40 PM, Dongseok Yi wrote:
On 2021-01-07 20:05, Daniel Borkmann wrote:
On 1/7/21 1:39 AM, Dongseok Yi wrote:
skbs in fraglist could be shared by a BPF filter loaded at TC. It
triggers
On Thu, Jan 7, 2021 at 7:52 AM Daniel Borkmann wrote:
>
> On 1/7/21 12:40 PM, Dongseok Yi wrote:
> > On 2021-01-07 20:05, Daniel Borkmann wrote:
> >> On 1/7/21 1:39 AM, Dongseok Yi wrote:
> >>> skbs in fraglist could be shared by a BPF filter loaded at TC. It
> >>> triggers skb_ensure_writable ->
On 1/7/21 12:40 PM, Dongseok Yi wrote:
On 2021-01-07 20:05, Daniel Borkmann wrote:
On 1/7/21 1:39 AM, Dongseok Yi wrote:
skbs in fraglist could be shared by a BPF filter loaded at TC. It
triggers skb_ensure_writable -> pskb_expand_head ->
skb_clone_fraglist -> skb_get on each skb in the fraglis
On 2021-01-07 20:05, Daniel Borkmann wrote:
>
> On 1/7/21 1:39 AM, Dongseok Yi wrote:
> > skbs in fraglist could be shared by a BPF filter loaded at TC. It
> > triggers skb_ensure_writable -> pskb_expand_head ->
> > skb_clone_fraglist -> skb_get on each skb in the fraglist.
> >
> > While tcpdump,
On 1/7/21 1:39 AM, Dongseok Yi wrote:
skbs in fraglist could be shared by a BPF filter loaded at TC. It
triggers skb_ensure_writable -> pskb_expand_head ->
skb_clone_fraglist -> skb_get on each skb in the fraglist.
While tcpdump, sk_receive_queue of PF_PACKET has the original fraglist.
But the s
skbs in fraglist could be shared by a BPF filter loaded at TC. It
triggers skb_ensure_writable -> pskb_expand_head ->
skb_clone_fraglist -> skb_get on each skb in the fraglist.
While tcpdump, sk_receive_queue of PF_PACKET has the original fraglist.
But the same fraglist is queued to PF_INET (or PF
