Re: [Xen-devel] [PATCHv1 2/2] xen-netback: unref frags when handling a from-guest skb with a frag list

2015-03-04 Thread Ian Campbell
On Tue, 2015-03-03 at 16:26 +, David Vrabel wrote: Every time a VIF is destroyed up-to 256 pages may be leaked if packets with more than MAX_SKB_FRAGS frags where transmitted from the guest. Even worse, if another user of ballooned pages allocated one of these ballooned pages it would not

Re: [Xen-devel] [PATCHv1 2/2] xen-netback: unref frags when handling a from-guest skb with a frag list

2015-03-04 Thread Ian Campbell
On Wed, 2015-03-04 at 09:56 +, David Vrabel wrote: On 04/03/15 09:48, Ian Campbell wrote: On Tue, 2015-03-03 at 16:26 +, David Vrabel wrote: Every time a VIF is destroyed up-to 256 pages may be leaked if packets with more than MAX_SKB_FRAGS frags where transmitted from the guest.

[Xen-devel] [PATCHv1 2/2] xen-netback: unref frags when handling a from-guest skb with a frag list

2015-03-03 Thread David Vrabel
Every time a VIF is destroyed up-to 256 pages may be leaked if packets with more than MAX_SKB_FRAGS frags where transmitted from the guest. Even worse, if another user of ballooned pages allocated one of these ballooned pages it would not handle the the unexpectedly non-zero page count (e.g.,

Re: [Xen-devel] [PATCHv1 2/2] xen-netback: unref frags when handling a from-guest skb with a frag list

2015-03-03 Thread Zoltan Kiss
On 03/03/15 16:26, David Vrabel wrote: Every time a VIF is destroyed up-to 256 pages may be leaked if packets up to (and maybe a comma before it?) with more than MAX_SKB_FRAGS frags where transmitted from the guest. were