On Sun, Jun 16, 2024 at 11:08 AM Geert Uytterhoeven
<[email protected]> wrote:
> On Sat, Jun 15, 2024 at 12:55 PM kernel test robot <[email protected]> wrote:
> > kernel test robot noticed the following build errors:
> >
> > [auto build test ERROR on drm-misc/drm-misc-next]
> > [cannot apply to linus/master v6.10-rc3 next-20240613]
> > [If your patch is applied to the wrong git tree, kindly drop us a note.
> > And when submitting patch, we suggest to use '--base' as documented in
> > https://git-scm.com/docs/git-format-patch#_base_tree_information]
> >
> > url:
> > https://github.com/intel-lab-lkp/linux/commits/Geert-Uytterhoeven/drm-panic-Fix-uninitialized-drm_scanout_buffer-set_pixel-crash/20240614-032053
> > base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
> > patch link:
> > https://lore.kernel.org/r/3121082eb4beb461773ebb6f656ed9b4286967ee.1718305355.git.geert%2Brenesas%40glider.be
> > patch subject: [PATCH v2 5/7] drm/panic: Convert to drm_fb_clip_offset()
> > config: x86_64-randconfig-003-20240615
> > (https://download.01.org/0day-ci/archive/20240615/[email protected]/config)
> > compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
> > reproduce (this is a W=1 build):
> > (https://download.01.org/0day-ci/archive/20240615/[email protected]/reproduce)
> >
> > If you fix the issue in a separate patch/commit (i.e. not just a new
> > version of
> > the same patch/commit), kindly add following tags
> > | Reported-by: kernel test robot <[email protected]>
> > | Closes:
> > https://lore.kernel.org/oe-kbuild-all/[email protected]/
> >
> > All errors (new ones prefixed by >>):
> >
> > >> depmod: ERROR: Cycle detected: drm -> drm_kms_helper -> drm
> > depmod: ERROR: Found 2 modules in dependency cycles!
>
> Oops, so DRM core cannot call any of the helpers, and DRM_PANIC
> selecting DRM_KMS_HELPER was wrong in the first place?
Q: So how does this work with DRM_PANIC calling
drm_fb_helper_emergency_disable()?
A: drm_fb_helper_emergency_disable() is a dummy if
!CONFIG_DRM_FBDEV_EMULATION, so I guess no one tried to build
a failing randconfig with CONFIG_DRM_FBDEV_EMULATION=y yet.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
