[Bug 264206] graphics/drm-fbsd13-kmod: System panic setting sysctl hw.dri.0.vblank=1 - page fault (drm_vblank_info -> sysctl_root_handler_locked)

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 25 May 2022 00:37:46 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264206

Kubilay Kocak <koobs@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|bugs@FreeBSD.org            |x11@FreeBSD.org
              Flags|                            |maintainer-feedback?(x11@Fr
                   |                            |eeBSD.org), mfc-stable13?,
                   |                            |mfc-stable12-
           Keywords|                            |crash, needs-qa
             Status|New                         |Open
            Summary|sysctl panic with           |graphics/drm-fbsd13-kmod:
                   |hw.dri.0.vblank             |System panic setting sysctl
                   |                            |hw.dri.0.vblank=1 - page
                   |                            |fault (drm_vblank_info ->
                   |                            |sysctl_root_handler_locked)
                 CC|                            |x11@FreeBSD.org

--- Comment #2 from Kubilay Kocak <koobs@FreeBSD.org> ---
@Reporter Thank you for your report. Could you please include additional
information:

- exact uname -a output
- /etc/sysctl.conf contents (as an attachment)
- pkg info drm-fbsd13-kmod (output as an attachment)
- Include screenshot mentioned in comment 1 as an attachment

If you're able to configure a debug kernel and kernel core dumps [1] to obtain
a detailed backtrace, that would be great

[1] https://docs.freebsd.org/en/books/developers-handbook/kerneldebug/

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