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由 Eric Farman 提交于
When processing Format-0 CCWs, we use the "len" variable as the number of CCWs to convert to Format-1. But that variable contains zero here, and is not a meaningful CCW count until ccwchain_calc_length() returns. Since that routine requires and expects Format-1 CCWs to identify the chaining behavior, the format conversion must be done first. Convert the 2KB we copied even if it's more than we need. Fixes: 7f8e89a8 ("vfio-ccw: Factor out the ccw0-to-ccw1 transition") Reported-by: NFarhan Ali <alifm@linux.ibm.com> Signed-off-by: NEric Farman <farman@linux.ibm.com> Reviewed-by: NCornelia Huck <cohuck@redhat.com> Message-Id: <20190702180928.18113-1-farman@linux.ibm.com> Signed-off-by: NCornelia Huck <cohuck@redhat.com>
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