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scsi: storvsc: fix memory leak on ring buffer busy
When storvsc is sending I/O to Hyper-v, it may allocate a bigger buffer descriptor for large data payload that can't fit into a pre-allocated buffer descriptor. This bigger buffer is freed on return path. If I/O request to Hyper-v fails due to ring buffer busy, the storvsc allocated buffer descriptor should also be freed. [mkp: applied by hand] Fixes: be0cf6c ("scsi: storvsc: Set the tablesize based on the information given by the host") Cc: <stable@vger.kernel.org> Signed-off-by: Long Li <longli@microsoft.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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