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xen-devel
Re: [Xen-devel] [PATCH]Fix memory leak for copy-receiver of netfront
Kasai Takanori wrote:
Hi all,
We found the problem of the memory leak when working with copy-
receiver of netfront.
The source of a problem is that the fragment page is not released with
dev_kfree_skb() because the nr_frags variable of skb is set to 0.
This is the patch to fix memory leak in netfront.
This code doesn't apply to the current 2.6.25 version of netfront. The
only similar code I could see is:
skb = np->rx_skbs[id];
mfn = gnttab_end_foreign_transfer_ref(ref);
gnttab_release_grant_reference(&np->gref_rx_head, ref);
np->grant_rx_ref[id] = GRANT_INVALID_REF;
if (0 == mfn) {
skb_shinfo(skb)->nr_frags = 0;
dev_kfree_skb(skb);
noxfer++;
continue;
}
Would you mind reviewing the 2.6.25 version of netfront to see if it
needs a patch?
Thanks,
J
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