FYI, we noticed the below changes on https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git dm-4.5 commit ead3db62bf10fe143bec99e7b7ff370d7a6d23ef ("dm ioctl: do not directly deference user memory in check_version()") With your commit, we found the following message in stderr: device-mapper: version ioctl on failed: Bad address Incompatible libdevmapper and kernel driver Command failed To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Ying Huang