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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: devel-bounces@openvz.org Errors-To: devel-bounces@openvz.org Three things found while reviewing the series, none of them for it. Please fix them separately. - A v3 image with header_length < 104 is not rejected. The only check is header_length < sizeof(struct QCowHeader), and only when the compression bit is set. qemu fails such an image with "qcow2 header too short". For us the extension parser then starts inside the header. - For a v2 image hdr->header_length is never set, so it stays 0 from kzalloc() and the extensions are parsed from offset 0 of the header instead of 72. qemu sets header_length = 72 for v2. - The table mode is still tested against FMODE_WRITE in qcow2_check_convert_hdr(), qcow2_attach_file(), qcow2_truncate_preallocations(), qcow2_postsuspend() and qcow2_preresume(), while the series switched to BLK_OPEN_WRITE. Same value today, but dm_table_get_mode() returns blk_mode_t. The is_ro in qcow2_check_convert_hdr() has only a commented-out user and can go. Please file appropriate tasks and fix them separately. -- Best regards, Konstantin Khorenko, Virtuozzo Linux Kernel Team _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel