Commit 8ac0f15f335 accidently broke the COW of non changed areas of newly allocated clusters, when the write spans multiple clusters, and needs COW both prior and after the write. This results in 'after' COW area being encrypted with wrong sector address, which render it corrupted.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1745922 CC: qemu-stable <qemu-sta...@nongnu.org> V2: grammar, spelling and code style fixes. Best regards, Maxim Levitsky Maxim Levitsky (3): block/qcow2: refactoring of threaded encryption code block/qcow2: fix the corruption when rebasing luks encrypted files qemu-iotests: Add test for bz #1745922 block/qcow2-cluster.c | 30 ++++++++------- block/qcow2-threads.c | 61 ++++++++++++++++++++++++------- tests/qemu-iotests/263 | 75 ++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/263.out | 19 ++++++++++ tests/qemu-iotests/group | 1 + 5 files changed, 160 insertions(+), 26 deletions(-) create mode 100755 tests/qemu-iotests/263 create mode 100644 tests/qemu-iotests/263.out -- 2.17.2
