Re: [PATCH blktests] blktrace/001: Skip test when kernel lockdown is enabled

[Daniel Wagner <dwagner@suse.de>]

Hi Disha,

On Mon, May 11, 2026 at 01:16:03PM +0530, Disha Goel wrote:
> Thank you for pointing me to the SUSE lockdown patches. After analysing
> them, I found that the second patch (lockdown-fix-kernel-lockdown-
> enforcement-issue-when-secure.patch) is causing the issue.
> 
> This patch fixes bsc#1237521 by directly calling lockdown hooks, but it
> appears to be too restrictive - it blocks blktrace from accessing
> debugfs even though upstream kernel 7.1+ allows this with lockdown
> enabled.

Right, so it's a downstream problem as expected.

> The patch works around a timing issue but has the side effect of
> blocking legitimate debugging tools. Is this intentional, or should
> debugging tools like blktrace be allowed even with lockdown enabled?

I am not really involved into this part of our downstream kernel and
don't know why these patches didn't make it upstream :)

Would you mind to you create a SUSE bugzilla issue and we can figure out
a solution there?

Thanks a lot!
Daniel