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We land here in case not everything we've asked for could be mapped. So unmap only the bytes which have actually been mapped. Also we didn't access anything, so acces_len can be 0. Reported-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Li Qiang <liq3ea@gmail.com> Message-id: 20190628072357.31782-1-kraxel@redhat.com
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