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It will affect how to judge the skip of > > the test case blktrace/001. > > > > Could you share your system set up conditions? FYI, I used Fedora 43, QEMU VM, > > Intel server and v7.1-rc1 kernel for the trial above. I'm guessing any > > difference between the two environments causes the blktrace behavior difference. > > > > Hi Shin'ichiro, > > Thank you for the detailed testing and feedback. > > After further investigation, I've identified the root cause. This > failure is seen on SLES 16.x and RHEL 10.x with 6.12-based kernels when > Secure Boot is enabled (kernel lockdown active). > > I tested on upstream kernel v7.1.0-rc1 with lockdown enabled, and the > test ran fine. My apologies for not testing with upstream earlier. > > The issue is caused by missing debugfs fixes in the distro kernels. > I'll work with SUSE and Red Hat to get these patches backported to their > 6.12-based kernels. > > I'm withdrawing this patch as it's a kernel bug, not a test framework issue. > Thank you for the thorough review. No worries, and thanks to you. This patch post revealed and shared the problem, which is great :)