From: Igor Druzhinin <igor.druzhi...@citrix.com> Date: Thu, 28 Feb 2019 12:48:03 +0000
> Zero-copy callback flag is not yet set on frag list skb at the moment > xenvif_handle_frag_list() returns -ENOMEM. This eventually results in > leaking grant ref mappings since xenvif_zerocopy_callback() is never > called for these fragments. Those eventually build up and cause Xen > to kill Dom0 as the slots get reused for new mappings: > > "d0v0 Attempt to implicitly unmap a granted PTE c010000329fce005" > > That behavior is observed under certain workloads where sudden spikes > of page cache writes coexist with active atomic skb allocations from > network traffic. Additionally, rework the logic to deal with frag_list > deallocation in a single place. > > Signed-off-by: Paul Durrant <paul.durr...@citrix.com> > Signed-off-by: Igor Druzhinin <igor.druzhi...@citrix.com> Applied and queued up for -stable, thanks. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
