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authorQingFeng Hao <haoqf@linux.vnet.ibm.com>2016-12-16 06:20:40 +0100
committerMax Reitz <mreitz@redhat.com>2017-02-12 00:47:42 +0100
commit4545d4f4af8b29ba3b38dfb74d6f45342e15a62d (patch)
tree4428bc6f4d530ad3fb51b6976f7d36b836f4b6a3 /block.c
parent36bd4228126139a382a4fdbc49c96798a9894626 (diff)
block/vmdk: Fix the endian problem of buf_len and lba
The problem was triggered by qemu-iotests case 055. It failed when it was comparing the compressed vmdk image with original test.img. The cause is that buf_len in vmdk_write_extent wasn't converted to little-endian before it was stored to disk. But later vmdk_read_extent read it and converted it from little-endian to cpu endian. If the cpu is big-endian like s390, the problem will happen and the data length read by vmdk_read_extent will become invalid! The fix is to add the conversion in vmdk_write_extent, meanwhile, repair the endianness problem of lba field which shall also be converted to little-endian before storing to disk. Cc: qemu-stable@nongnu.org Signed-off-by: QingFeng Hao <haoqf@linux.vnet.ibm.com> Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Message-id: 20161216052040.53067-2-haoqf@linux.vnet.ibm.com Signed-off-by: Max Reitz <mreitz@redhat.com>
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