After the 8-byte size header, there are two one-byte headers and two bytes of padding before the crypt_header field. Our QCOW1_HDR_CRYPT constant did not skip the padding. http://git.qemu.org/?p=qemu.git;a=blob;f=block/qcow.c;h=ece22697#l41 https://bugzilla.redhat.com/show_bug.cgi?id=1185165 --- src/util/virstoragefile.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c index 7a4f9a0..8568ebb 100644 --- a/src/util/virstoragefile.c +++ b/src/util/virstoragefile.c @@ -161,7 +161,7 @@ qedGetBackingStore(char **, int *, const char *, size_t); #define QCOWX_HDR_BACKING_FILE_SIZE (QCOWX_HDR_BACKING_FILE_OFFSET+8) #define QCOWX_HDR_IMAGE_SIZE (QCOWX_HDR_BACKING_FILE_SIZE+4+4) -#define QCOW1_HDR_CRYPT (QCOWX_HDR_IMAGE_SIZE+8+1+1) +#define QCOW1_HDR_CRYPT (QCOWX_HDR_IMAGE_SIZE+8+1+1+2) #define QCOW2_HDR_CRYPT (QCOWX_HDR_IMAGE_SIZE+8) #define QCOW1_HDR_TOTAL_SIZE (QCOW1_HDR_CRYPT+4+8)