block: vhdx - add error check
This add an error check for an invalid descriptor entry signature, when flushing the log descriptor entries. Signed-off-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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@ -435,6 +435,11 @@ static int vhdx_log_flush_desc(BlockDriverState *bs, VHDXLogDescriptor *desc,
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/* write 'count' sectors of sector */
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/* write 'count' sectors of sector */
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memset(buffer, 0, VHDX_LOG_SECTOR_SIZE);
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memset(buffer, 0, VHDX_LOG_SECTOR_SIZE);
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count = desc->zero_length / VHDX_LOG_SECTOR_SIZE;
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count = desc->zero_length / VHDX_LOG_SECTOR_SIZE;
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} else {
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error_report("Invalid VHDX log descriptor entry signature 0x%" PRIx32,
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desc->signature);
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ret = -EINVAL;
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goto exit;
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}
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}
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file_offset = desc->file_offset;
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file_offset = desc->file_offset;
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