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authorJason Wang <jasowang@redhat.com>2016-06-30 09:45:31 +0300
committerDavid S. Miller <davem@davemloft.net>2016-07-01 12:32:16 +0300
commit982fb490c298896d15e9323a882f34a57c11ff56 (patch)
tree453a3c8afc504c726462412c5b61cb90785c1069 /tools/virtio
parent8dc7243abbf514e208aee1c0b430f35b866f8cc4 (diff)
downloadlinux-982fb490c298896d15e9323a882f34a57c11ff56.tar.xz
ptr_ring: support zero length ring
Sometimes, we need zero length ring. But current code will crash since we don't do any check before accessing the ring. This patch fixes this. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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