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由 David Vrabel 提交于
The copy of the ring request was lacking a following barrier(), potentially allowing the compiler to optimize the copy away. Use RING_COPY_REQUEST() to ensure the request is copied to local memory. This is part of XSA155. CC: stable@vger.kernel.org Reviewed-by: NJuergen Gross <jgross@suse.com> Signed-off-by: NDavid Vrabel <david.vrabel@citrix.com> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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