Hi, commit ead3db62bf10f (dm ioctl: do not directly deference user memory in check_version()) causes my machine not to boot. I get errors like the following and then get dumped into a recovery shell: device-mapper: version ioctl on failed: Bad address Incompatible libdevmapper (unknown version) and kernel driver (unknown version). Reverting the above patch fixes the issue for me. Cheers, Jeff -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel